Compare commits
No commits in common. "c8-stream-1.0" and "c8s-stream-2.0" have entirely different histories.
c8-stream-
...
c8s-stream
2
.gitignore
vendored
2
.gitignore
vendored
@ -1 +1 @@
|
||||
SOURCES/slirp4netns-c4e1bc5.tar.gz
|
||||
SOURCES/slirp4netns-21fdece.tar.gz
|
||||
|
||||
@ -1 +1 @@
|
||||
c80717510d48cfe56eec27e93a4fe92182faca0b SOURCES/slirp4netns-c4e1bc5.tar.gz
|
||||
aa1f45a8411788e9fef6bdd69b2b1608b657a2b1 SOURCES/slirp4netns-21fdece.tar.gz
|
||||
|
||||
@ -1,34 +0,0 @@
|
||||
From 126c04acbabd7ad32c2b018fe10dfac2a3bc1210 Mon Sep 17 00:00:00 2001
|
||||
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
|
||||
Date: Sun, 28 Jul 2019 19:11:24 +0200
|
||||
Subject: [PATCH] Fix heap overflow in ip_reass on big packet input
|
||||
|
||||
When the first fragment does not fit in the preallocated buffer, q will
|
||||
already be pointing to the ext buffer, so we mustn't try to update it.
|
||||
|
||||
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
|
||||
---
|
||||
src/ip_input.c | 4 +++-
|
||||
1 file changed, 3 insertions(+), 1 deletion(-)
|
||||
|
||||
diff -up ./slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/ip_input.c.CVE-2019-14378 ./slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/ip_input.c
|
||||
--- slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/ip_input.c.CVE-2019-14378 2019-09-27 11:04:30.215413671 +0200
|
||||
+++ slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/ip_input.c 2019-09-27 11:04:30.216413682 +0200
|
||||
@@ -333,6 +333,8 @@ insert:
|
||||
q = fp->frag_link.next;
|
||||
m = dtom(slirp, q);
|
||||
|
||||
+ int was_ext = m->m_flags & M_EXT;
|
||||
+
|
||||
q = (struct ipasfrag *) q->ipf_next;
|
||||
while (q != (struct ipasfrag*)&fp->frag_link) {
|
||||
struct mbuf *t = dtom(slirp, q);
|
||||
@@ -355,7 +357,7 @@ insert:
|
||||
* the old buffer (in the mbuf), so we must point ip
|
||||
* into the new buffer.
|
||||
*/
|
||||
- if (m->m_flags & M_EXT) {
|
||||
+ if (!was_ext && m->m_flags & M_EXT) {
|
||||
int delta = (char *)q - m->m_dat;
|
||||
q = (struct ipasfrag *)(m->m_ext + delta);
|
||||
}
|
||||
@ -44,80 +44,89 @@ Message-Id: <20200109094228.79764-2-ppandit@redhat.com>
|
||||
src/tcp_subr.c | 7 +++++++
|
||||
2 files changed, 8 insertions(+)
|
||||
|
||||
diff -up slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/tcp_subr.c.CVE-2020-7039 slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/tcp_subr.c
|
||||
--- slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/tcp_subr.c.CVE-2020-7039 2020-01-16 11:13:39.558653385 +0100
|
||||
+++ slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/tcp_subr.c 2020-01-16 14:23:54.027184429 +0100
|
||||
@@ -704,7 +704,7 @@ tcp_emu(struct socket *so, struct mbuf *
|
||||
n4 = (laddr & 0xff);
|
||||
diff -up ./slirp4netns-21fdece2737dc24ffa3f01a341b8a6854f8b13b4/vendor/libslirp/src/tcp_subr.c.CVE-2020-7039 ./slirp4netns-21fdece2737dc24ffa3f01a341b8a6854f8b13b4/vendor/libslirp/src/tcp_subr.c
|
||||
--- slirp4netns-21fdece2737dc24ffa3f01a341b8a6854f8b13b4/vendor/libslirp/src/tcp_subr.c.CVE-2020-7039 2020-01-16 11:13:43.472696979 +0100
|
||||
+++ slirp4netns-21fdece2737dc24ffa3f01a341b8a6854f8b13b4/vendor/libslirp/src/tcp_subr.c 2020-01-16 11:13:43.474697002 +0100
|
||||
@@ -692,7 +692,7 @@ int tcp_emu(struct socket *so, struct mb
|
||||
n4 = (laddr & 0xff);
|
||||
|
||||
m->m_len = bptr - m->m_data; /* Adjust length */
|
||||
- m->m_len += snprintf(bptr, m->m_size - m->m_len,
|
||||
+ m->m_len += snprintf(bptr, M_FREEROOM(m),
|
||||
"ORT %d,%d,%d,%d,%d,%d\r\n%s",
|
||||
n1, n2, n3, n4, n5, n6, x==7?buff:"");
|
||||
return 1;
|
||||
@@ -737,7 +737,7 @@ tcp_emu(struct socket *so, struct mbuf *
|
||||
n4 = (laddr & 0xff);
|
||||
m->m_len = bptr - m->m_data; /* Adjust length */
|
||||
- m->m_len += snprintf(bptr, m->m_size - m->m_len,
|
||||
+ m->m_len += snprintf(bptr, M_FREEROOM(m),
|
||||
"ORT %d,%d,%d,%d,%d,%d\r\n%s", n1, n2, n3, n4,
|
||||
n5, n6, x == 7 ? buff : "");
|
||||
return 1;
|
||||
@@ -727,8 +727,7 @@ int tcp_emu(struct socket *so, struct mb
|
||||
n4 = (laddr & 0xff);
|
||||
|
||||
m->m_len = bptr - m->m_data; /* Adjust length */
|
||||
- m->m_len += snprintf(bptr, m->m_size - m->m_len,
|
||||
+ m->m_len += snprintf(bptr, M_FREEROOM(m),
|
||||
"27 Entering Passive Mode (%d,%d,%d,%d,%d,%d)\r\n%s",
|
||||
n1, n2, n3, n4, n5, n6, x==7?buff:"");
|
||||
m->m_len = bptr - m->m_data; /* Adjust length */
|
||||
- m->m_len +=
|
||||
- snprintf(bptr, m->m_size - m->m_len,
|
||||
+ m->m_len += snprintf(bptr, M_FREEROOM(m),
|
||||
"27 Entering Passive Mode (%d,%d,%d,%d,%d,%d)\r\n%s",
|
||||
n1, n2, n3, n4, n5, n6, x == 7 ? buff : "");
|
||||
|
||||
@@ -763,7 +763,7 @@ tcp_emu(struct socket *so, struct mbuf *
|
||||
if (m->m_data[m->m_len-1] == '\0' && lport != 0 &&
|
||||
(so = tcp_listen(slirp, INADDR_ANY, 0, so->so_laddr.s_addr,
|
||||
htons(lport), SS_FACCEPTONCE)) != NULL)
|
||||
- m->m_len = snprintf(m->m_data, m->m_size, "%d",
|
||||
+ m->m_len = snprintf(m->m_data, M_ROOM(m), "%d",
|
||||
ntohs(so->so_fport)) + 1;
|
||||
return 1;
|
||||
@@ -754,8 +753,8 @@ int tcp_emu(struct socket *so, struct mb
|
||||
if (m->m_data[m->m_len - 1] == '\0' && lport != 0 &&
|
||||
(so = tcp_listen(slirp, INADDR_ANY, 0, so->so_laddr.s_addr,
|
||||
htons(lport), SS_FACCEPTONCE)) != NULL)
|
||||
- m->m_len =
|
||||
- snprintf(m->m_data, m->m_size, "%d", ntohs(so->so_fport)) + 1;
|
||||
+ m->m_len = snprintf(m->m_data, M_ROOM(m),
|
||||
+ "%d", ntohs(so->so_fport)) + 1;
|
||||
return 1;
|
||||
|
||||
@@ -783,7 +783,7 @@ tcp_emu(struct socket *so, struct mbuf *
|
||||
return 1;
|
||||
}
|
||||
m->m_len = bptr - m->m_data; /* Adjust length */
|
||||
- m->m_len += snprintf(bptr, m->m_size,
|
||||
+ m->m_len += snprintf(bptr, M_FREEROOM(m),
|
||||
"DCC CHAT chat %lu %u%c\n",
|
||||
(unsigned long)ntohl(so->so_faddr.s_addr),
|
||||
ntohs(so->so_fport), 1);
|
||||
@@ -794,7 +794,7 @@ tcp_emu(struct socket *so, struct mbuf *
|
||||
return 1;
|
||||
}
|
||||
m->m_len = bptr - m->m_data; /* Adjust length */
|
||||
- m->m_len += snprintf(bptr, m->m_size,
|
||||
+ m->m_len += snprintf(bptr, M_FREEROOM(m),
|
||||
"DCC SEND %s %lu %u %u%c\n", buff,
|
||||
(unsigned long)ntohl(so->so_faddr.s_addr),
|
||||
ntohs(so->so_fport), n1, 1);
|
||||
@@ -805,7 +805,7 @@ tcp_emu(struct socket *so, struct mbuf *
|
||||
return 1;
|
||||
}
|
||||
m->m_len = bptr - m->m_data; /* Adjust length */
|
||||
- m->m_len += snprintf(bptr, m->m_size,
|
||||
+ m->m_len += snprintf(bptr, M_FREEROOM(m),
|
||||
"DCC MOVE %s %lu %u %u%c\n", buff,
|
||||
(unsigned long)ntohl(so->so_faddr.s_addr),
|
||||
ntohs(so->so_fport), n1, 1);
|
||||
@@ -892,6 +892,9 @@ tcp_emu(struct socket *so, struct mbuf *
|
||||
break;
|
||||
case EMU_IRC:
|
||||
@@ -774,7 +773,8 @@ int tcp_emu(struct socket *so, struct mb
|
||||
return 1;
|
||||
}
|
||||
m->m_len = bptr - m->m_data; /* Adjust length */
|
||||
- m->m_len += snprintf(bptr, m->m_size, "DCC CHAT chat %lu %u%c\n",
|
||||
+ m->m_len += snprintf(bptr, M_FREEROOM(m),
|
||||
+ "DCC CHAT chat %lu %u%c\n",
|
||||
(unsigned long)ntohl(so->so_faddr.s_addr),
|
||||
ntohs(so->so_fport), 1);
|
||||
} else if (sscanf(bptr, "DCC SEND %256s %u %u %u", buff, &laddr, &lport,
|
||||
@@ -784,8 +784,8 @@ int tcp_emu(struct socket *so, struct mb
|
||||
return 1;
|
||||
}
|
||||
m->m_len = bptr - m->m_data; /* Adjust length */
|
||||
- m->m_len +=
|
||||
- snprintf(bptr, m->m_size, "DCC SEND %s %lu %u %u%c\n", buff,
|
||||
+ m->m_len += snprintf(bptr, M_FREEROOM(m),
|
||||
+ "DCC SEND %s %lu %u %u%c\n", buff,
|
||||
(unsigned long)ntohl(so->so_faddr.s_addr),
|
||||
ntohs(so->so_fport), n1, 1);
|
||||
} else if (sscanf(bptr, "DCC MOVE %256s %u %u %u", buff, &laddr, &lport,
|
||||
@@ -795,8 +795,8 @@ int tcp_emu(struct socket *so, struct mb
|
||||
return 1;
|
||||
}
|
||||
m->m_len = bptr - m->m_data; /* Adjust length */
|
||||
- m->m_len +=
|
||||
- snprintf(bptr, m->m_size, "DCC MOVE %s %lu %u %u%c\n", buff,
|
||||
+ m->m_len += snprintf(bptr, M_FREEROOM(m),
|
||||
+ "DCC MOVE %s %lu %u %u%c\n", buff,
|
||||
(unsigned long)ntohl(so->so_faddr.s_addr),
|
||||
ntohs(so->so_fport), n1, 1);
|
||||
}
|
||||
@@ -882,6 +882,9 @@ int tcp_emu(struct socket *so, struct mb
|
||||
break;
|
||||
|
||||
case 5:
|
||||
+ if (bptr == m->m_data + m->m_len - 1)
|
||||
+ return 1; /* We need two bytes */
|
||||
case 5:
|
||||
+ if (bptr == m->m_data + m->m_len - 1)
|
||||
+ return 1; /* We need two bytes */
|
||||
+
|
||||
/*
|
||||
* The difference between versions 1.0 and
|
||||
* 2.0 is here. For future versions of
|
||||
@@ -907,6 +910,9 @@ tcp_emu(struct socket *so, struct mbuf *
|
||||
/* This is the field containing the port
|
||||
* number that RA-player is listening to.
|
||||
*/
|
||||
+ if (bptr == m->m_data + m->m_len - 1)
|
||||
+ return 1; /* We need two bytes */
|
||||
/*
|
||||
* The difference between versions 1.0 and
|
||||
* 2.0 is here. For future versions of
|
||||
@@ -897,6 +900,10 @@ int tcp_emu(struct socket *so, struct mb
|
||||
/* This is the field containing the port
|
||||
* number that RA-player is listening to.
|
||||
*/
|
||||
+
|
||||
lport = (((u_char*)bptr)[0] << 8)
|
||||
+ ((u_char *)bptr)[1];
|
||||
if (lport < 6970)
|
||||
+ if (bptr == m->m_data + m->m_len - 1)
|
||||
+ return 1; /* We need two bytes */
|
||||
+
|
||||
lport = (((uint8_t *)bptr)[0] << 8) + ((uint8_t *)bptr)[1];
|
||||
if (lport < 6970)
|
||||
lport += 256; /* don't know why */
|
||||
|
||||
255
SOURCES/slirp4netns-CVE-2020-8608.patch
Normal file
255
SOURCES/slirp4netns-CVE-2020-8608.patch
Normal file
@ -0,0 +1,255 @@
|
||||
From 68ccb8021a838066f0951d4b2817eb6b6f10a843 Mon Sep 17 00:00:00 2001
|
||||
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
|
||||
Date: Mon, 27 Jan 2020 10:24:14 +0100
|
||||
Subject: [PATCH] tcp_emu: fix unsafe snprintf() usages
|
||||
MIME-Version: 1.0
|
||||
Content-Type: text/plain; charset=UTF-8
|
||||
Content-Transfer-Encoding: 8bit
|
||||
|
||||
Various calls to snprintf() assume that snprintf() returns "only" the
|
||||
number of bytes written (excluding terminating NUL).
|
||||
|
||||
https://pubs.opengroup.org/onlinepubs/9699919799/functions/snprintf.html#tag_16_159_04
|
||||
|
||||
"Upon successful completion, the snprintf() function shall return the
|
||||
number of bytes that would be written to s had n been sufficiently
|
||||
large excluding the terminating null byte."
|
||||
|
||||
Before patch ce131029, if there isn't enough room in "m_data" for the
|
||||
"DCC ..." message, we overflow "m_data".
|
||||
|
||||
After the patch, if there isn't enough room for the same, we don't
|
||||
overflow "m_data", but we set "m_len" out-of-bounds. The next time an
|
||||
access is bounded by "m_len", we'll have a buffer overflow then.
|
||||
|
||||
Use slirp_fmt*() to fix potential OOB memory access.
|
||||
|
||||
Reported-by: Laszlo Ersek <lersek@redhat.com>
|
||||
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
|
||||
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
|
||||
Message-Id: <20200127092414.169796-7-marcandre.lureau@redhat.com>
|
||||
---
|
||||
src/tcp_subr.c | 44 +++++++++++++++++++++-----------------------
|
||||
1 file changed, 21 insertions(+), 23 deletions(-)
|
||||
|
||||
diff -up ./slirp4netns-2244b9b6461afeccad1678fac3d6e478c28b4ad6/vendor/libslirp/src/tcp_subr.c.CVE-2020-8608 ./slirp4netns-2244b9b6461afeccad1678fac3d6e478c28b4ad6/vendor/libslirp/src/tcp_subr.c
|
||||
--- slirp4netns-2244b9b6461afeccad1678fac3d6e478c28b4ad6/vendor/libslirp/src/tcp_subr.c.CVE-2020-8608 2020-02-06 13:31:33.592822770 +0100
|
||||
+++ slirp4netns-2244b9b6461afeccad1678fac3d6e478c28b4ad6/vendor/libslirp/src/tcp_subr.c 2020-02-06 13:31:33.594822795 +0100
|
||||
@@ -640,8 +640,7 @@ int tcp_emu(struct socket *so, struct mb
|
||||
NTOHS(n1);
|
||||
NTOHS(n2);
|
||||
m_inc(m, snprintf(NULL, 0, "%d,%d\r\n", n1, n2) + 1);
|
||||
- m->m_len = snprintf(m->m_data, M_ROOM(m), "%d,%d\r\n", n1, n2);
|
||||
- assert(m->m_len < M_ROOM(m));
|
||||
+ m->m_len = slirp_fmt(m->m_data, M_ROOM(m), "%d,%d\r\n", n1, n2);
|
||||
} else {
|
||||
*eol = '\r';
|
||||
}
|
||||
@@ -681,9 +680,9 @@ int tcp_emu(struct socket *so, struct mb
|
||||
n4 = (laddr & 0xff);
|
||||
|
||||
m->m_len = bptr - m->m_data; /* Adjust length */
|
||||
- m->m_len += snprintf(bptr, M_FREEROOM(m),
|
||||
- "ORT %d,%d,%d,%d,%d,%d\r\n%s", n1, n2, n3, n4,
|
||||
- n5, n6, x == 7 ? buff : "");
|
||||
+ m->m_len += slirp_fmt(bptr, M_FREEROOM(m),
|
||||
+ "ORT %d,%d,%d,%d,%d,%d\r\n%s",
|
||||
+ n1, n2, n3, n4, n5, n6, x == 7 ? buff : "");
|
||||
return 1;
|
||||
} else if ((bptr = (char *)strstr(m->m_data, "27 Entering")) != NULL) {
|
||||
/*
|
||||
@@ -716,10 +715,9 @@ int tcp_emu(struct socket *so, struct mb
|
||||
n4 = (laddr & 0xff);
|
||||
|
||||
m->m_len = bptr - m->m_data; /* Adjust length */
|
||||
- m->m_len += snprintf(bptr, M_FREEROOM(m),
|
||||
- "27 Entering Passive Mode (%d,%d,%d,%d,%d,%d)\r\n%s",
|
||||
- n1, n2, n3, n4, n5, n6, x == 7 ? buff : "");
|
||||
-
|
||||
+ m->m_len += slirp_fmt(bptr, M_FREEROOM(m),
|
||||
+ "27 Entering Passive Mode (%d,%d,%d,%d,%d,%d)\r\n%s",
|
||||
+ n1, n2, n3, n4, n5, n6, x == 7 ? buff : "");
|
||||
return 1;
|
||||
}
|
||||
|
||||
@@ -742,8 +740,8 @@ int tcp_emu(struct socket *so, struct mb
|
||||
if (m->m_data[m->m_len - 1] == '\0' && lport != 0 &&
|
||||
(so = tcp_listen(slirp, INADDR_ANY, 0, so->so_laddr.s_addr,
|
||||
htons(lport), SS_FACCEPTONCE)) != NULL)
|
||||
- m->m_len = snprintf(m->m_data, M_ROOM(m),
|
||||
- "%d", ntohs(so->so_fport)) + 1;
|
||||
+ m->m_len = slirp_fmt0(m->m_data, M_ROOM(m),
|
||||
+ "%d", ntohs(so->so_fport));
|
||||
return 1;
|
||||
|
||||
case EMU_IRC:
|
||||
@@ -762,10 +760,10 @@ int tcp_emu(struct socket *so, struct mb
|
||||
return 1;
|
||||
}
|
||||
m->m_len = bptr - m->m_data; /* Adjust length */
|
||||
- m->m_len += snprintf(bptr, M_FREEROOM(m),
|
||||
- "DCC CHAT chat %lu %u%c\n",
|
||||
- (unsigned long)ntohl(so->so_faddr.s_addr),
|
||||
- ntohs(so->so_fport), 1);
|
||||
+ m->m_len += slirp_fmt(bptr, M_FREEROOM(m),
|
||||
+ "DCC CHAT chat %lu %u%c\n",
|
||||
+ (unsigned long)ntohl(so->so_faddr.s_addr),
|
||||
+ ntohs(so->so_fport), 1);
|
||||
} else if (sscanf(bptr, "DCC SEND %256s %u %u %u", buff, &laddr, &lport,
|
||||
&n1) == 4) {
|
||||
if ((so = tcp_listen(slirp, INADDR_ANY, 0, htonl(laddr),
|
||||
@@ -773,10 +771,10 @@ int tcp_emu(struct socket *so, struct mb
|
||||
return 1;
|
||||
}
|
||||
m->m_len = bptr - m->m_data; /* Adjust length */
|
||||
- m->m_len += snprintf(bptr, M_FREEROOM(m),
|
||||
- "DCC SEND %s %lu %u %u%c\n", buff,
|
||||
- (unsigned long)ntohl(so->so_faddr.s_addr),
|
||||
- ntohs(so->so_fport), n1, 1);
|
||||
+ m->m_len += slirp_fmt(bptr, M_FREEROOM(m),
|
||||
+ "DCC SEND %s %lu %u %u%c\n", buff,
|
||||
+ (unsigned long)ntohl(so->so_faddr.s_addr),
|
||||
+ ntohs(so->so_fport), n1, 1);
|
||||
} else if (sscanf(bptr, "DCC MOVE %256s %u %u %u", buff, &laddr, &lport,
|
||||
&n1) == 4) {
|
||||
if ((so = tcp_listen(slirp, INADDR_ANY, 0, htonl(laddr),
|
||||
@@ -784,10 +782,10 @@ int tcp_emu(struct socket *so, struct mb
|
||||
return 1;
|
||||
}
|
||||
m->m_len = bptr - m->m_data; /* Adjust length */
|
||||
- m->m_len += snprintf(bptr, M_FREEROOM(m),
|
||||
- "DCC MOVE %s %lu %u %u%c\n", buff,
|
||||
- (unsigned long)ntohl(so->so_faddr.s_addr),
|
||||
- ntohs(so->so_fport), n1, 1);
|
||||
+ m->m_len += slirp_fmt(bptr, M_FREEROOM(m),
|
||||
+ "DCC MOVE %s %lu %u %u%c\n", buff,
|
||||
+ (unsigned long)ntohl(so->so_faddr.s_addr),
|
||||
+ ntohs(so->so_fport), n1, 1);
|
||||
}
|
||||
return 1;
|
||||
|
||||
From 30648c03b27fb8d9611b723184216cd3174b6775 Mon Sep 17 00:00:00 2001
|
||||
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
|
||||
Date: Mon, 27 Jan 2020 10:24:09 +0100
|
||||
Subject: [PATCH] util: add slirp_fmt() helpers
|
||||
MIME-Version: 1.0
|
||||
Content-Type: text/plain; charset=UTF-8
|
||||
Content-Transfer-Encoding: 8bit
|
||||
|
||||
Various calls to snprintf() in libslirp assume that snprintf() returns
|
||||
"only" the number of bytes written (excluding terminating NUL).
|
||||
|
||||
https://pubs.opengroup.org/onlinepubs/9699919799/functions/snprintf.html#tag_16_159_04
|
||||
|
||||
"Upon successful completion, the snprintf() function shall return the
|
||||
number of bytes that would be written to s had n been sufficiently
|
||||
large excluding the terminating null byte."
|
||||
|
||||
Introduce slirp_fmt() that handles several pathological cases the
|
||||
way libslirp usually expect:
|
||||
|
||||
- treat error as fatal (instead of silently returning -1)
|
||||
|
||||
- fmt0() will always \0 end
|
||||
|
||||
- return the number of bytes actually written (instead of what would
|
||||
have been written, which would usually result in OOB later), including
|
||||
the ending \0 for fmt0()
|
||||
|
||||
- warn if truncation happened (instead of ignoring)
|
||||
|
||||
Other less common cases can still be handled with strcpy/snprintf() etc.
|
||||
|
||||
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
|
||||
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
|
||||
Message-Id: <20200127092414.169796-2-marcandre.lureau@redhat.com>
|
||||
---
|
||||
src/util.c | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
||||
src/util.h | 3 +++
|
||||
2 files changed, 65 insertions(+)
|
||||
|
||||
diff --git a/src/util.c b/src/util.c
|
||||
index e596087..e3b6257 100644
|
||||
--- a/vendor/libslirp/src/util.c
|
||||
+++ b/vendor/libslirp/src/util.c
|
||||
@@ -364,3 +364,65 @@ void slirp_pstrcpy(char *buf, int buf_size, const char *str)
|
||||
}
|
||||
*q = '\0';
|
||||
}
|
||||
+
|
||||
+static int slirp_vsnprintf(char *str, size_t size,
|
||||
+ const char *format, va_list args)
|
||||
+{
|
||||
+ int rv = vsnprintf(str, size, format, args);
|
||||
+
|
||||
+ if (rv < 0) {
|
||||
+ g_error("vsnprintf() failed: %s", g_strerror(errno));
|
||||
+ }
|
||||
+
|
||||
+ return rv;
|
||||
+}
|
||||
+
|
||||
+/*
|
||||
+ * A snprintf()-like function that:
|
||||
+ * - returns the number of bytes written (excluding optional \0-ending)
|
||||
+ * - dies on error
|
||||
+ * - warn on truncation
|
||||
+ */
|
||||
+int slirp_fmt(char *str, size_t size, const char *format, ...)
|
||||
+{
|
||||
+ va_list args;
|
||||
+ int rv;
|
||||
+
|
||||
+ va_start(args, format);
|
||||
+ rv = slirp_vsnprintf(str, size, format, args);
|
||||
+ va_end(args);
|
||||
+
|
||||
+ if (rv > size) {
|
||||
+ g_critical("vsnprintf() truncation");
|
||||
+ }
|
||||
+
|
||||
+ return MIN(rv, size);
|
||||
+}
|
||||
+
|
||||
+/*
|
||||
+ * A snprintf()-like function that:
|
||||
+ * - always \0-end (unless size == 0)
|
||||
+ * - returns the number of bytes actually written, including \0 ending
|
||||
+ * - dies on error
|
||||
+ * - warn on truncation
|
||||
+ */
|
||||
+int slirp_fmt0(char *str, size_t size, const char *format, ...)
|
||||
+{
|
||||
+ va_list args;
|
||||
+ int rv;
|
||||
+
|
||||
+ va_start(args, format);
|
||||
+ rv = slirp_vsnprintf(str, size, format, args);
|
||||
+ va_end(args);
|
||||
+
|
||||
+ if (rv >= size) {
|
||||
+ g_critical("vsnprintf() truncation");
|
||||
+ if (size > 0)
|
||||
+ str[size - 1] = '\0';
|
||||
+ rv = size;
|
||||
+ } else {
|
||||
+ rv += 1; /* include \0 */
|
||||
+ }
|
||||
+
|
||||
+ return rv;
|
||||
+}
|
||||
diff --git a/src/util.h b/src/util.h
|
||||
index e9c3073..5530c46 100644
|
||||
--- a/vendor/libslirp/src/util.h
|
||||
+++ b/vendor/libslirp/src/util.h
|
||||
@@ -181,4 +181,7 @@ static inline int slirp_socket_set_fast_reuse(int fd)
|
||||
|
||||
void slirp_pstrcpy(char *buf, int buf_size, const char *str);
|
||||
|
||||
+int slirp_fmt(char *str, size_t size, const char *format, ...);
|
||||
+int slirp_fmt0(char *str, size_t size, const char *format, ...);
|
||||
+
|
||||
#endif
|
||||
--
|
||||
2.24.1
|
||||
|
||||
@ -1,27 +1,28 @@
|
||||
%global git0 https://github.com/rootless-containers/%{name}
|
||||
%global commit0 c4e1bc5a5e6987f3a352ca524f13320a2d483398
|
||||
%global commit0 21fdece2737dc24ffa3f01a341b8a6854f8b13b4
|
||||
%global shortcommit0 %(c=%{commit0}; echo ${c:0:7})
|
||||
|
||||
Name: slirp4netns
|
||||
Version: 0.1
|
||||
Release: 5.dev.git%{shortcommit0}%{?dist}
|
||||
# no go-md2man in ix86 and ppc64
|
||||
ExcludeArch: %{ix86} ppc64
|
||||
Version: 0.4.2
|
||||
Release: 3.git%{shortcommit0}%{?dist}
|
||||
Summary: slirp for network namespaces
|
||||
License: GPLv2
|
||||
URL: %{git0}
|
||||
Source0: %{git0}/archive/%{commit0}/%{name}-%{shortcommit0}.tar.gz
|
||||
Patch0: slirp4netns-CVE-2019-14378.patch
|
||||
Patch1: slirp4netns-CVE-2020-7039.patch
|
||||
Patch0: slirp4netns-CVE-2020-7039.patch
|
||||
Patch1: slirp4netns-CVE-2020-8608.patch
|
||||
BuildRequires: autoconf
|
||||
BuildRequires: automake
|
||||
BuildRequires: gcc
|
||||
BuildRequires: glib2-devel
|
||||
BuildRequires: git
|
||||
BuildRequires: go-md2man
|
||||
BuildRequires: libcap-devel
|
||||
BuildRequires: libseccomp-devel
|
||||
BuildRequires: make
|
||||
|
||||
%description
|
||||
User-mode networking for unprivileged network namespaces.
|
||||
slirp for network namespaces, without copying buffers across the namespaces.
|
||||
|
||||
%package devel
|
||||
Summary: %{summary}
|
||||
@ -57,16 +58,39 @@ make DESTDIR=%{buildroot} install install-man
|
||||
%{_mandir}/man1/%{name}.1.gz
|
||||
|
||||
%changelog
|
||||
* Thu Jan 16 2020 Jindrich Novy <jnovy@redhat.com> - 0.1-5.dev.gitc4e1bc5
|
||||
- backport fix for CVE-2020-7039
|
||||
- Resolves: #1791578
|
||||
|
||||
* Thu Nov 28 2019 Jindrich Novy <jnovy@redhat.com> - 0.1-4.dev.gitc4e1bc5
|
||||
- actually add CVE-2019-14378 patch to dist-git
|
||||
* Thu Feb 06 2020 Jindrich Novy <jnovy@redhat.com> - 0.4.2-3.git21fdece
|
||||
- Fix CVE-2020-8608.
|
||||
- Related: RHELPLAN-25139
|
||||
|
||||
* Fri Sep 27 2019 Jindrich Novy <jnovy@redhat.com> - 0.1-3.dev.gitc4e1bc5
|
||||
- Fix CVE-2019-14378 (#1768394).
|
||||
* Thu Jan 16 2020 Jindrich Novy <jnovy@redhat.com> - 0.4.2-2.git21fdece
|
||||
- Fix CVE-2020-7039.
|
||||
- Related: RHELPLAN-25139
|
||||
|
||||
* Sat Dec 07 2019 Jindrich Novy <jnovy@redhat.com> - 0.4.2-1.git21fdece
|
||||
- update to latest 0.4.2, fixes bug 1763454
|
||||
- Related: RHELPLAN-25139
|
||||
|
||||
* Thu Oct 31 2019 Jindrich Novy <jnovy@redhat.com> - 0.4.0-2
|
||||
- add new BR: libseccomp-devel
|
||||
- Related: #1766774
|
||||
|
||||
* Wed Oct 30 2019 Jindrich Novy <jnovy@redhat.com> - 0.4.0-1
|
||||
- update to v.0.4.0
|
||||
- sync with fedora spec
|
||||
- drop applied CVE-2019-14378 patch
|
||||
- Resolves: #1766774
|
||||
|
||||
* Thu Sep 26 2019 Jindrich Novy <jnovy@redhat.com> - 0.3.0-4
|
||||
- Fix CVE-2019-14378 (#1755595).
|
||||
|
||||
* Fri Jun 07 2019 Lokesh Mandvekar <lsm5@redhat.com> - 0.3.0-3
|
||||
- Resolves: #1683217 - BR: glib2-devel
|
||||
|
||||
* Fri Jun 07 2019 Lokesh Mandvekar <lsm5@redhat.com> - 0.3.0-2
|
||||
- Resolves: #1683217 - bump slirp4netns to v0.3.0
|
||||
|
||||
* Thu Feb 28 2019 Lokesh Mandvekar <lsm5@redhat.com> - 0.3.0-1.alpha.2.git30883b5
|
||||
- bump to v0.3.0-alpha.2
|
||||
|
||||
* Fri Nov 16 2018 Frantisek Kluknavsky <fkluknav@redhat.com> - 0.1-2.dev.gitc4e1bc5
|
||||
- changed summary
|
||||
|
||||
Loading…
Reference in New Issue
Block a user