import UBI bind-9.16.23-11.el9_2.2
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SOURCES/bind-9.16-CVE-2023-3341.patch
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168
SOURCES/bind-9.16-CVE-2023-3341.patch
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From b137e12dc8118cddee20e372e480a495585e72b6 Mon Sep 17 00:00:00 2001
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From: Petr Mensik <pemensik@redhat.com>
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Date: Tue, 19 Sep 2023 12:44:31 +0200
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Subject: [PATCH] Fix CVE-2023-3341
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6245. [security] Limit the amount of recursion that can be performed
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by isccc_cc_fromwire. (CVE-2023-3341) [GL #4152]
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---
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lib/isccc/cc.c | 39 ++++++++++++++++++++++++--------
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lib/isccc/include/isccc/result.h | 4 +++-
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lib/isccc/result.c | 4 +++-
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3 files changed, 35 insertions(+), 12 deletions(-)
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diff --git a/lib/isccc/cc.c b/lib/isccc/cc.c
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index 0be28b9057..3744d0f037 100644
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--- a/lib/isccc/cc.c
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+++ b/lib/isccc/cc.c
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@@ -50,6 +50,10 @@
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#define MAX_TAGS 256
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#define DUP_LIFETIME 900
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+#ifndef ISCCC_MAXDEPTH
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+#define ISCCC_MAXDEPTH \
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+ 10 /* Big enough for rndc which just sends a string each way. */
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+#endif
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typedef isccc_sexpr_t *sexpr_ptr;
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@@ -480,19 +484,25 @@ verify(isccc_sexpr_t *alist, unsigned char *data, unsigned int length,
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static isc_result_t
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table_fromwire(isccc_region_t *source, isccc_region_t *secret,
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- uint32_t algorithm, isccc_sexpr_t **alistp);
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+ uint32_t algorithm, unsigned int depth, isccc_sexpr_t **alistp);
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static isc_result_t
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-list_fromwire(isccc_region_t *source, isccc_sexpr_t **listp);
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+list_fromwire(isccc_region_t *source, unsigned int depth,
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+ isccc_sexpr_t **listp);
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static isc_result_t
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-value_fromwire(isccc_region_t *source, isccc_sexpr_t **valuep) {
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+value_fromwire(isccc_region_t *source, unsigned int depth,
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+ isccc_sexpr_t **valuep) {
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unsigned int msgtype;
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uint32_t len;
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isccc_sexpr_t *value;
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isccc_region_t active;
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isc_result_t result;
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+ if (depth > ISCCC_MAXDEPTH) {
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+ return (ISCCC_R_MAXDEPTH);
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+ }
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+
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if (REGION_SIZE(*source) < 1 + 4) {
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return (ISC_R_UNEXPECTEDEND);
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}
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@@ -513,9 +523,9 @@ value_fromwire(isccc_region_t *source, isccc_sexpr_t **valuep) {
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result = ISC_R_NOMEMORY;
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}
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} else if (msgtype == ISCCC_CCMSGTYPE_TABLE) {
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- result = table_fromwire(&active, NULL, 0, valuep);
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+ result = table_fromwire(&active, NULL, 0, depth + 1, valuep);
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} else if (msgtype == ISCCC_CCMSGTYPE_LIST) {
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- result = list_fromwire(&active, valuep);
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+ result = list_fromwire(&active, depth + 1, valuep);
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} else {
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result = ISCCC_R_SYNTAX;
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}
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@@ -525,7 +535,7 @@ value_fromwire(isccc_region_t *source, isccc_sexpr_t **valuep) {
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static isc_result_t
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table_fromwire(isccc_region_t *source, isccc_region_t *secret,
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- uint32_t algorithm, isccc_sexpr_t **alistp) {
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+ uint32_t algorithm, unsigned int depth, isccc_sexpr_t **alistp) {
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char key[256];
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uint32_t len;
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isc_result_t result;
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@@ -535,6 +545,10 @@ table_fromwire(isccc_region_t *source, isccc_region_t *secret,
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REQUIRE(alistp != NULL && *alistp == NULL);
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+ if (depth > ISCCC_MAXDEPTH) {
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+ return (ISCCC_R_MAXDEPTH);
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+ }
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+
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checksum_rstart = NULL;
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first_tag = true;
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alist = isccc_alist_create();
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@@ -551,7 +565,7 @@ table_fromwire(isccc_region_t *source, isccc_region_t *secret,
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GET_MEM(key, len, source->rstart);
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key[len] = '\0'; /* Ensure NUL termination. */
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value = NULL;
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- result = value_fromwire(source, &value);
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+ result = value_fromwire(source, depth + 1, &value);
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if (result != ISC_R_SUCCESS) {
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goto bad;
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}
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@@ -589,14 +603,19 @@ bad:
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}
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static isc_result_t
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-list_fromwire(isccc_region_t *source, isccc_sexpr_t **listp) {
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+list_fromwire(isccc_region_t *source, unsigned int depth,
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+ isccc_sexpr_t **listp) {
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isccc_sexpr_t *list, *value;
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isc_result_t result;
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+ if (depth > ISCCC_MAXDEPTH) {
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+ return (ISCCC_R_MAXDEPTH);
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+ }
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+
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list = NULL;
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while (!REGION_EMPTY(*source)) {
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value = NULL;
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- result = value_fromwire(source, &value);
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+ result = value_fromwire(source, depth + 1, &value);
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if (result != ISC_R_SUCCESS) {
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isccc_sexpr_free(&list);
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return (result);
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@@ -628,7 +647,7 @@ isccc_cc_fromwire(isccc_region_t *source, isccc_sexpr_t **alistp,
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return (ISCCC_R_UNKNOWNVERSION);
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}
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- return (table_fromwire(source, secret, algorithm, alistp));
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+ return (table_fromwire(source, secret, algorithm, 0, alistp));
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}
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static isc_result_t
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diff --git a/lib/isccc/include/isccc/result.h b/lib/isccc/include/isccc/result.h
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index 5346babefc..5b6a876d1c 100644
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--- a/lib/isccc/include/isccc/result.h
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+++ b/lib/isccc/include/isccc/result.h
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@@ -46,8 +46,10 @@
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#define ISCCC_R_CLOCKSKEW (ISC_RESULTCLASS_ISCCC + 4)
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/*% Duplicate */
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#define ISCCC_R_DUPLICATE (ISC_RESULTCLASS_ISCCC + 5)
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+/*% Maximum recursion depth */
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+#define ISCCC_R_MAXDEPTH (ISC_RESULTCLASS_ISCCC + 6)
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-#define ISCCC_R_NRESULTS 6 /*%< Number of results */
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+#define ISCCC_R_NRESULTS 7 /*%< Number of results */
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ISC_LANG_BEGINDECLS
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diff --git a/lib/isccc/result.c b/lib/isccc/result.c
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index 9285435209..1956cb1655 100644
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--- a/lib/isccc/result.c
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+++ b/lib/isccc/result.c
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@@ -36,12 +36,14 @@ static const char *text[ISCCC_R_NRESULTS] = {
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"bad auth", /* 3 */
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"expired", /* 4 */
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"clock skew", /* 5 */
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- "duplicate" /* 6 */
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+ "duplicate", /* 6 */
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+ "max depth" /* 7 */
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};
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static const char *ids[ISCCC_R_NRESULTS] = {
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"ISCCC_R_UNKNOWNVERSION", "ISCCC_R_SYNTAX", "ISCCC_R_BADAUTH",
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"ISCCC_R_EXPIRED", "ISCCC_R_CLOCKSKEW", "ISCCC_R_DUPLICATE",
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+ "ISCCC_R_MAXDEPTH"
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};
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#define ISCCC_RESULT_RESULTSET 2
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--
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2.41.0
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@ -51,7 +51,7 @@ Summary: The Berkeley Internet Name Domain (BIND) DNS (Domain Name System) serv
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Name: bind
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Name: bind
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License: MPLv2.0
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License: MPLv2.0
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Version: 9.16.23
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Version: 9.16.23
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Release: 11%{?dist}.1
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Release: 11%{?dist}.2
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Epoch: 32
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Epoch: 32
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Url: https://www.isc.org/downloads/bind/
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Url: https://www.isc.org/downloads/bind/
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#
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#
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@ -126,6 +126,7 @@ Patch186: bind-9.16-CVE-2022-3736.patch
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Patch187: bind-9.16-CVE-2022-3924.patch
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Patch187: bind-9.16-CVE-2022-3924.patch
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# https://gitlab.isc.org/isc-projects/bind9/commit/f1d9e9ee3859976f403914d20ad2a10855343702
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# https://gitlab.isc.org/isc-projects/bind9/commit/f1d9e9ee3859976f403914d20ad2a10855343702
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Patch188: bind-9.16-CVE-2023-2828.patch
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Patch188: bind-9.16-CVE-2023-2828.patch
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Patch192: bind-9.16-CVE-2023-3341.patch
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%{?systemd_ordering}
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%{?systemd_ordering}
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Requires: coreutils
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Requires: coreutils
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@ -442,6 +443,7 @@ in HTML and PDF format.
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%patch186 -p1 -b .CVE-2022-3736
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%patch186 -p1 -b .CVE-2022-3736
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%patch187 -p1 -b .CVE-2022-3924
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%patch187 -p1 -b .CVE-2022-3924
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%patch188 -p1 -b .CVE-2023-2828
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%patch188 -p1 -b .CVE-2023-2828
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%patch192 -p1 -b .CVE-2023-3341
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%if %{with PKCS11}
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%if %{with PKCS11}
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%patch135 -p1 -b .config-pkcs11
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%patch135 -p1 -b .config-pkcs11
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@ -1165,6 +1167,9 @@ fi;
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%endif
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%endif
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%changelog
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%changelog
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* Wed Sep 20 2023 Petr Menšík <pemensik@redhat.com> - 32:9.16.23-11.2
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- Limit the amount of recursion possible in control channel (CVE-2023-3341)
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* Tue Jun 20 2023 Petr Menšík <pemensik@redhat.com> - 32:9.16.23-11.1
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* Tue Jun 20 2023 Petr Menšík <pemensik@redhat.com> - 32:9.16.23-11.1
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- Strengten cache cleaning to prevent overflowing configured limit
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- Strengten cache cleaning to prevent overflowing configured limit
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(CVE-2023-2828)
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(CVE-2023-2828)
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