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[72.234.108.41]) by smtp.gmail.com with ESMTPSA id h4-20020a655184000000b0059d6f5196fasm16815398pgq.78.2023.12.19.05.48.33 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Dec 2023 05:48:33 -0800 (PST) From: Steve Sakoman To: openembedded-core@lists.openembedded.org Subject: [OE-core][dunfell 1/5] glibc: Fix CVE-2023-4813 Date: Tue, 19 Dec 2023 03:48:19 -1000 Message-Id: X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Tue, 19 Dec 2023 13:48:39 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/192733 From: Bhabu Bindu Add patch to fix CVE-2023-4813 Link: https://security-tracker.debian.org/tracker/CVE-2023-4813 Signed-off-by: Bhabu Bindu Signed-off-by: Poonam Jadhav Signed-off-by: Steve Sakoman --- .../glibc/glibc/CVE-2023-4813.patch | 986 ++++++++++++++++++ meta/recipes-core/glibc/glibc_2.31.bb | 1 + 2 files changed, 987 insertions(+) create mode 100644 meta/recipes-core/glibc/glibc/CVE-2023-4813.patch diff --git a/meta/recipes-core/glibc/glibc/CVE-2023-4813.patch b/meta/recipes-core/glibc/glibc/CVE-2023-4813.patch new file mode 100644 index 0000000000..c7db4038c2 --- /dev/null +++ b/meta/recipes-core/glibc/glibc/CVE-2023-4813.patch @@ -0,0 +1,986 @@ +From 1c37b8022e8763fedbb3f79c02e05c6acfe5a215 Mon Sep 17 00:00:00 2001 +From: Siddhesh Poyarekar +Date: Thu, 17 Mar 2022 11:44:34 +0530 +Subject: [PATCH] Simplify allocations and fix merge and continue actions [BZ + #28931] + +Allocations for address tuples is currently a bit confusing because of +the pointer chasing through PAT, making it hard to observe the sequence +in which allocations have been made. Narrow scope of the pointer +chasing through PAT so that it is only used where necessary. + +This also tightens actions behaviour with the hosts database in +getaddrinfo to comply with the manual text. The "continue" action +discards previous results and the "merge" action results in an immedate +lookup failure. Consequently, chaining of allocations across modules is +no longer necessary, thus opening up cleanup opportunities. + +A test has been added that checks some combinations to ensure that they +work correctly. + +Resolves: BZ #28931 + +CVE: CVE-2023-4813 +Upstream-Status: Backport [https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=1c37b8022e8763fedbb3f79c02e05c6acfe5a215] +Comments: Hunks refreshed + +Signed-off-by: Siddhesh Poyarekar +Reviewed-by: DJ Delorie +Signed-off-by: Bhabu Bindu +--- + nss/Makefile | 1 + + nss/tst-nss-gai-actions.c | 149 ++++++ + nss/tst-nss-gai-actions.root/etc/host.conf | 1 + + nss/tst-nss-gai-actions.root/etc/hosts | 508 +++++++++++++++++++++ + sysdeps/posix/getaddrinfo.c | 143 +++--- + 5 files changed, 750 insertions(+), 52 deletions(-) + create mode 100644 nss/tst-nss-gai-actions.c + create mode 100644 nss/tst-nss-gai-actions.root/etc/host.conf + create mode 100644 nss/tst-nss-gai-actions.root/etc/hosts + +diff --git a/nss/Makefile b/nss/Makefile +index 42a59535cb..d8b06b44fb 100644 +--- a/nss/Makefile ++++ b/nss/Makefile +@@ -61,6 +61,7 @@ + + tests-container = \ + tst-nss-test3 \ ++ tst-nss-gai-actions \ + tst-nss-files-hosts-long \ + tst-nss-db-endpwent \ + tst-nss-db-endgrent +diff --git a/nss/tst-nss-gai-actions.c b/nss/tst-nss-gai-actions.c +new file mode 100644 +index 0000000000..efca6cd183 +--- /dev/null ++++ b/nss/tst-nss-gai-actions.c +@@ -0,0 +1,149 @@ ++/* Test continue and merge NSS actions for getaddrinfo. ++ Copyright The GNU Toolchain Authors. ++ This file is part of the GNU C Library. ++ ++ The GNU C Library is free software; you can redistribute it and/or ++ modify it under the terms of the GNU Lesser General Public ++ License as published by the Free Software Foundation; either ++ version 2.1 of the License, or (at your option) any later version. ++ ++ The GNU C Library is distributed in the hope that it will be useful, ++ but WITHOUT ANY WARRANTY; without even the implied warranty of ++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ++ Lesser General Public License for more details. ++ ++ You should have received a copy of the GNU Lesser General Public ++ License along with the GNU C Library; if not, see ++ . */ ++ ++#include ++#include ++#include ++#include ++#include ++#include ++ ++#include ++#include ++#include ++#include ++#include ++ ++enum ++{ ++ ACTION_MERGE = 0, ++ ACTION_CONTINUE, ++}; ++ ++static const char * ++family_str (int family) ++{ ++ switch (family) ++ { ++ case AF_UNSPEC: ++ return "AF_UNSPEC"; ++ case AF_INET: ++ return "AF_INET"; ++ default: ++ __builtin_unreachable (); ++ } ++} ++ ++static const char * ++action_str (int action) ++{ ++ switch (action) ++ { ++ case ACTION_MERGE: ++ return "merge"; ++ case ACTION_CONTINUE: ++ return "continue"; ++ default: ++ __builtin_unreachable (); ++ } ++} ++ ++static void ++do_one_test (int action, int family, bool canon) ++{ ++ struct addrinfo hints = ++ { ++ .ai_family = family, ++ }; ++ ++ struct addrinfo *ai; ++ ++ if (canon) ++ hints.ai_flags = AI_CANONNAME; ++ ++ printf ("***** Testing \"files [SUCCESS=%s] files\" for family %s, %s\n", ++ action_str (action), family_str (family), ++ canon ? "AI_CANONNAME" : ""); ++ ++ int ret = getaddrinfo ("example.org", "80", &hints, &ai); ++ ++ switch (action) ++ { ++ case ACTION_MERGE: ++ if (ret == 0) ++ { ++ char *formatted = support_format_addrinfo (ai, ret); ++ ++ printf ("merge unexpectedly succeeded:\n %s\n", formatted); ++ support_record_failure (); ++ free (formatted); ++ } ++ else ++ return; ++ case ACTION_CONTINUE: ++ { ++ char *formatted = support_format_addrinfo (ai, ret); ++ ++ /* Verify that the result appears exactly once. */ ++ const char *expected = "address: STREAM/TCP 192.0.0.1 80\n" ++ "address: DGRAM/UDP 192.0.0.1 80\n" ++ "address: RAW/IP 192.0.0.1 80\n"; ++ ++ const char *contains = strstr (formatted, expected); ++ const char *contains2 = NULL; ++ ++ if (contains != NULL) ++ contains2 = strstr (contains + strlen (expected), expected); ++ ++ if (contains == NULL || contains2 != NULL) ++ { ++ printf ("continue failed:\n%s\n", formatted); ++ support_record_failure (); ++ } ++ ++ free (formatted); ++ break; ++ } ++ default: ++ __builtin_unreachable (); ++ } ++} ++ ++static void ++do_one_test_set (int action) ++{ ++ char buf[32]; ++ ++ snprintf (buf, sizeof (buf), "files [SUCCESS=%s] files", ++ action_str (action)); ++ __nss_configure_lookup ("hosts", buf); ++ ++ do_one_test (action, AF_UNSPEC, false); ++ do_one_test (action, AF_INET, false); ++ do_one_test (action, AF_INET, true); ++} ++ ++static int ++do_test (void) ++{ ++ do_one_test_set (ACTION_CONTINUE); ++ do_one_test_set (ACTION_MERGE); ++ return 0; ++} ++ ++#include +diff --git a/nss/tst-nss-gai-actions.root/etc/host.conf b/nss/tst-nss-gai-actions.root/etc/host.conf +new file mode 100644 +index 0000000000..d1a59f73a9 +--- /dev/null ++++ b/nss/tst-nss-gai-actions.root/etc/host.conf +@@ -0,0 +1 @@ ++multi on +diff --git a/nss/tst-nss-gai-actions.root/etc/hosts b/nss/tst-nss-gai-actions.root/etc/hosts +new file mode 100644 +index 0000000000..50ce9774dc +--- /dev/null ++++ b/nss/tst-nss-gai-actions.root/etc/hosts +@@ -0,0 +1,508 @@ ++192.0.0.1 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++192.0.1.253 example.org ++192.0.1.254 example.org +diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c +index 18dccd5924..3d9bea60c6 100644 +--- a/sysdeps/posix/getaddrinfo.c ++++ b/sysdeps/posix/getaddrinfo.c +@@ -458,11 +458,6 @@ gaih_inet (const char *name, const struct gaih_service *service, + + if (name != NULL) + { +- at = alloca_account (sizeof (struct gaih_addrtuple), alloca_used); +- at->family = AF_UNSPEC; +- at->scopeid = 0; +- at->next = NULL; +- + if (req->ai_flags & AI_IDN) + { + char *out; +@@ -473,13 +468,21 @@ gaih_inet (const char *name, const struct gaih_service *service, + malloc_name = true; + } + +- if (__inet_aton_exact (name, (struct in_addr *) at->addr) != 0) ++ uint32_t addr[4]; ++ if (__inet_aton_exact (name, (struct in_addr *) addr) != 0) + { ++ at = alloca_account (sizeof (struct gaih_addrtuple), alloca_used); ++ at->scopeid = 0; ++ at->next = NULL; ++ + if (req->ai_family == AF_UNSPEC || req->ai_family == AF_INET) +- at->family = AF_INET; ++ { ++ memcpy (at->addr, addr, sizeof (at->addr)); ++ at->family = AF_INET; ++ } + else if (req->ai_family == AF_INET6 && (req->ai_flags & AI_V4MAPPED)) + { +- at->addr[3] = at->addr[0]; ++ at->addr[3] = addr[0]; + at->addr[2] = htonl (0xffff); + at->addr[1] = 0; + at->addr[0] = 0; +@@ -505,49 +505,62 @@ + + if (req->ai_flags & AI_CANONNAME) + canon = name; ++ ++ goto process_list; + } +- else if (at->family == AF_UNSPEC) ++ ++ char *scope_delim = strchr (name, SCOPE_DELIMITER); ++ int e; ++ ++ if (scope_delim == NULL) ++ e = inet_pton (AF_INET6, name, addr); ++ else ++ e = __inet_pton_length (AF_INET6, name, scope_delim - name, addr); ++ ++ if (e > 0) + { +- char *scope_delim = strchr (name, SCOPE_DELIMITER); +- int e; +- if (scope_delim == NULL) +- e = inet_pton (AF_INET6, name, at->addr); ++ at = alloca_account (sizeof (struct gaih_addrtuple), ++ alloca_used); ++ at->scopeid = 0; ++ at->next = NULL; ++ ++ if (req->ai_family == AF_UNSPEC || req->ai_family == AF_INET6) ++ { ++ memcpy (at->addr, addr, sizeof (at->addr)); ++ at->family = AF_INET6; ++ } ++ else if (req->ai_family == AF_INET ++ && IN6_IS_ADDR_V4MAPPED (addr)) ++ { ++ at->addr[0] = addr[3]; ++ at->addr[1] = addr[1]; ++ at->addr[2] = addr[2]; ++ at->addr[3] = addr[3]; ++ at->family = AF_INET; ++ } + else +- e = __inet_pton_length (AF_INET6, name, scope_delim - name, +- at->addr); +- if (e > 0) + { +- if (req->ai_family == AF_UNSPEC || req->ai_family == AF_INET6) +- at->family = AF_INET6; +- else if (req->ai_family == AF_INET +- && IN6_IS_ADDR_V4MAPPED (at->addr)) +- { +- at->addr[0] = at->addr[3]; +- at->family = AF_INET; +- } +- else +- { +- result = -EAI_ADDRFAMILY; +- goto free_and_return; +- } +- +- if (scope_delim != NULL +- && __inet6_scopeid_pton ((struct in6_addr *) at->addr, +- scope_delim + 1, +- &at->scopeid) != 0) +- { +- result = -EAI_NONAME; +- goto free_and_return; +- } ++ result = -EAI_ADDRFAMILY; ++ goto free_and_return; ++ } + +- if (req->ai_flags & AI_CANONNAME) +- canon = name; ++ if (scope_delim != NULL ++ && __inet6_scopeid_pton ((struct in6_addr *) at->addr, ++ scope_delim + 1, ++ &at->scopeid) != 0) ++ { ++ result = -EAI_NONAME; ++ goto free_and_return; + } ++ ++ if (req->ai_flags & AI_CANONNAME) ++ canon = name; ++ ++ goto process_list; + } + +- if (at->family == AF_UNSPEC && (req->ai_flags & AI_NUMERICHOST) == 0) ++ if ((req->ai_flags & AI_NUMERICHOST) == 0) + { +- struct gaih_addrtuple **pat = &at; + int no_data = 0; + int no_inet6_data = 0; + service_user *nip; +@@ -543,6 +559,7 @@ gaih_inet (const char *name, const struct gaih_service *service, + enum nss_status status = NSS_STATUS_UNAVAIL; + int no_more; + struct resolv_context *res_ctx = NULL; ++ bool do_merge = false; + + /* If we do not have to look for IPv6 addresses or the canonical + name, use the simple, old functions, which do not support +@@ -579,7 +596,7 @@ gaih_inet (const char *name, const struct gaih_service *service, + result = -EAI_MEMORY; + goto free_and_return; + } +- *pat = addrmem; ++ at = addrmem; + } + else + { +@@ -632,6 +649,8 @@ gaih_inet (const char *name, const struct gaih_service *service, + } + + struct gaih_addrtuple *addrfree = addrmem; ++ struct gaih_addrtuple **pat = &at; ++ + for (int i = 0; i < air->naddrs; ++i) + { + socklen_t size = (air->family[i] == AF_INET +@@ -695,12 +714,6 @@ gaih_inet (const char *name, const struct gaih_service *service, + + free (air); + +- if (at->family == AF_UNSPEC) +- { +- result = -EAI_NONAME; +- goto free_and_return; +- } +- + goto process_list; + } + else if (err == 0) +@@ -750,6 +763,22 @@ + + while (!no_more) + { ++ /* Always start afresh; continue should discard previous results ++ and the hosts database does not support merge. */ ++ at = NULL; ++ free (canonbuf); ++ free (addrmem); ++ canon = canonbuf = NULL; ++ addrmem = NULL; ++ got_ipv6 = false; ++ ++ if (do_merge) ++ { ++ __set_h_errno (NETDB_INTERNAL); ++ __set_errno (EBUSY); ++ break; ++ } ++ + no_data = 0; + nss_gethostbyname4_r fct4 = NULL; + +@@ -744,12 +773,14 @@ gaih_inet (const char *name, const struct gaih_service *service, + { + while (1) + { +- status = DL_CALL_FCT (fct4, (name, pat, ++ status = DL_CALL_FCT (fct4, (name, &at, + tmpbuf->data, tmpbuf->length, + &errno, &h_errno, + NULL)); + if (status == NSS_STATUS_SUCCESS) + break; ++ /* gethostbyname4_r may write into AT, so reset it. */ ++ at = NULL; + if (status != NSS_STATUS_TRYAGAIN + || errno != ERANGE || h_errno != NETDB_INTERNAL) + { +@@ -774,7 +805,9 @@ gaih_inet (const char *name, const struct gaih_service *service, + no_data = 1; + + if ((req->ai_flags & AI_CANONNAME) != 0 && canon == NULL) +- canon = (*pat)->name; ++ canon = at->name; ++ ++ struct gaih_addrtuple **pat = &at; + + while (*pat != NULL) + { +@@ -826,6 +859,8 @@ gaih_inet (const char *name, const struct gaih_service *service, + + if (fct != NULL) + { ++ struct gaih_addrtuple **pat = &at; ++ + if (req->ai_family == AF_INET6 + || req->ai_family == AF_UNSPEC) + { +@@ -917,6 +946,10 @@ + if (nss_next_action (nip, status) == NSS_ACTION_RETURN) + break; + ++ /* The hosts database does not support MERGE. */ ++ if (nss_next_action (nip, status) == NSS_ACTION_MERGE) ++ do_merge = true; ++ + if (nip->next == NULL) + no_more = -1; + else +@@ -930,7 +969,7 @@ gaih_inet (const char *name, const struct gaih_service *service, + } + + process_list: +- if (at->family == AF_UNSPEC) ++ if (at == NULL) + { + result = -EAI_NONAME; + goto free_and_return; +-- +2.39.3 diff --git a/meta/recipes-core/glibc/glibc_2.31.bb b/meta/recipes-core/glibc/glibc_2.31.bb index 8298088323..296c892994 100644 --- a/meta/recipes-core/glibc/glibc_2.31.bb +++ b/meta/recipes-core/glibc/glibc_2.31.bb @@ -88,6 +88,7 @@ SRC_URI = "${GLIBC_GIT_URI};branch=${SRCBRANCH};name=glibc \ file://0037-Avoid-deadlock-between-pthread_create-and-ctors.patch \ file://CVE-2023-0687.patch \ file://CVE-2023-4911.patch \ + file://CVE-2023-4813.patch \ " S = "${WORKDIR}/git" B = "${WORKDIR}/build-${TARGET_SYS}"