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2 changed files with 3 additions and 96 deletions

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@ -1,85 +0,0 @@
diff --git a/bin/varnishd/http2/cache_http2_hpack.c b/bin/varnishd/http2/cache_http2_hpack.c
index d432629..b0dacb9 100644
--- a/bin/varnishd/http2/cache_http2_hpack.c
+++ b/bin/varnishd/http2/cache_http2_hpack.c
@@ -93,18 +93,25 @@ static h2_error
h2h_addhdr(struct http *hp, char *b, size_t namelen, size_t len)
{
/* XXX: This might belong in cache/cache_http.c */
+ const char *b0;
unsigned n;
+ int disallow_empty;
+ char *p;
+ int i;
CHECK_OBJ_NOTNULL(hp, HTTP_MAGIC);
AN(b);
assert(namelen >= 2); /* 2 chars from the ': ' that we added */
assert(namelen <= len);
+
+ disallow_empty = 0;
if (len > UINT_MAX) { /* XXX: cache_param max header size */
VSLb(hp->vsl, SLT_BogoHeader, "Header too large: %.20s", b);
return (H2SE_ENHANCE_YOUR_CALM);
}
+ b0 = b;
if (b[0] == ':') {
/* Match H/2 pseudo headers */
/* XXX: Should probably have some include tbl for
@@ -113,10 +120,24 @@ h2h_addhdr(struct http *hp, char *b, size_t namelen, size_t len)
b += namelen;
len -= namelen;
n = HTTP_HDR_METHOD;
+ disallow_empty = 1;
+
+ /* First field cannot contain SP or CTL */
+ for (p = b, i = 0; i < len; p++, i++) {
+ if (vct_issp(*p) || vct_isctl(*p))
+ return (H2SE_PROTOCOL_ERROR);
+ }
} else if (!strncmp(b, ":path: ", namelen)) {
b += namelen;
len -= namelen;
n = HTTP_HDR_URL;
+ disallow_empty = 1;
+
+ /* Second field cannot contain LWS or CTL */
+ for (p = b, i = 0; i < len; p++, i++) {
+ if (vct_islws(*p) || vct_isctl(*p))
+ return (H2SE_PROTOCOL_ERROR);
+ }
} else if (!strncmp(b, ":scheme: ", namelen)) {
/* XXX: What to do about this one? (typically
"http" or "https"). For now set it as a normal
@@ -124,6 +145,15 @@ h2h_addhdr(struct http *hp, char *b, size_t namelen, size_t len)
b++;
len-=1;
n = hp->nhd;
+
+ for (p = b + namelen, i = 0; i < len-namelen;
+ p++, i++) {
+ if (vct_issp(*p) || vct_isctl(*p))
+ return (H2SE_PROTOCOL_ERROR);
+ }
+
+ if (!i)
+ return (H2SE_PROTOCOL_ERROR);
} else if (!strncmp(b, ":authority: ", namelen)) {
b+=6;
len-=6;
@@ -160,6 +190,13 @@ h2h_addhdr(struct http *hp, char *b, size_t namelen, size_t len)
hp->hd[n].b = b;
hp->hd[n].e = b + len;
+ if (disallow_empty && !Tlen(hp->hd[n])) {
+ VSLb(hp->vsl, SLT_BogoHeader,
+ "Empty pseudo-header %.*s",
+ (int)namelen, b0);
+ return (H2SE_PROTOCOL_ERROR);
+ }
+
return (0);
}

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@ -19,7 +19,7 @@
Summary: High-performance HTTP accelerator Summary: High-performance HTTP accelerator
Name: varnish Name: varnish
Version: 6.0.8 Version: 6.0.8
Release: 2%{?dist}.1 Release: 1%{?dist}.1
License: BSD License: BSD
Group: System Environment/Daemons Group: System Environment/Daemons
URL: https://www.varnish-cache.org/ URL: https://www.varnish-cache.org/
@ -35,9 +35,6 @@ Patch11: varnish-6.0.0.fix_el6_fortify_source.patch
# https://bugzilla.redhat.com/show_bug.cgi?id=2045031 # https://bugzilla.redhat.com/show_bug.cgi?id=2045031
Patch100: varnish-6.0.8.CVE-2022-23959.patch Patch100: varnish-6.0.8.CVE-2022-23959.patch
# https://bugzilla.redhat.com/show_bug.cgi?id=2141844
Patch101: varnish-6.0.8-CVE-2022-45060.patch
Obsoletes: varnish-libs Obsoletes: varnish-libs
%if %{with python3} %if %{with python3}
@ -147,7 +144,6 @@ sed -i '8 i\RPM_BUILD_ROOT=%{buildroot}' find-provides
%endif %endif
%patch100 -p1 %patch100 -p1
%patch101 -p1
%build %build
%if 0%{?rhel} == 6 %if 0%{?rhel} == 6
@ -380,12 +376,8 @@ fi
%changelog %changelog
* Mon Nov 14 2022 Luboš Uhliarik <luhliari@redhat.com> - 6.0.8-2.1 * Tue Feb 01 2022 Luboš Uhliarik <luhliari@redhat.com> - 6.0.8-1.1
- Resolves: #2142092 - CVE-2022-45060 varnish:6/varnish: Request Forgery - Resolves: #2047648 - CVE-2022-23959 varnish:6/varnish: Varnish HTTP/1 Request
Vulnerability
* Tue Feb 01 2022 Luboš Uhliarik <luhliari@redhat.com> - 6.0.8-2
- Resolves: #2047650 - CVE-2022-23959 varnish:6/varnish: Varnish HTTP/1 Request
Smuggling Vulnerability Smuggling Vulnerability
* Thu Jul 22 2021 Luboš Uhliarik <luhliari@redhat.com> - 6.0.8-1 * Thu Jul 22 2021 Luboš Uhliarik <luhliari@redhat.com> - 6.0.8-1