From 5b055a2bf4e0af63bdf60874ae23ca80a66669bb Mon Sep 17 00:00:00 2001 From: CentOS Sources Date: Jun 12 2023 08:00:00 +0000 Subject: import c-ares-1.17.1-5.el9_2.1 --- diff --git a/SOURCES/0003-Merge-pull-request-from-GHSA-9g78-jv2r-p7vc.patch b/SOURCES/0003-Merge-pull-request-from-GHSA-9g78-jv2r-p7vc.patch new file mode 100644 index 0000000..e3f3942 --- /dev/null +++ b/SOURCES/0003-Merge-pull-request-from-GHSA-9g78-jv2r-p7vc.patch @@ -0,0 +1,82 @@ +From b9b8413cfdb70a3f99e1573333b23052d57ec1ae Mon Sep 17 00:00:00 2001 +From: Brad House +Date: Mon, 22 May 2023 06:51:49 -0400 +Subject: [PATCH] Merge pull request from GHSA-9g78-jv2r-p7vc + +--- + src/lib/ares_process.c | 41 +++++++++++++++++++++++++---------------- + 1 file changed, 25 insertions(+), 16 deletions(-) + +diff --git a/src/lib/ares_process.c b/src/lib/ares_process.c +index bf0cde4..6cac0a9 100644 +--- a/src/lib/ares_process.c ++++ b/src/lib/ares_process.c +@@ -470,7 +470,7 @@ static void read_udp_packets(ares_channel channel, fd_set *read_fds, + { + struct server_state *server; + int i; +- ares_ssize_t count; ++ ares_ssize_t read_len; + unsigned char buf[MAXENDSSZ + 1]; + #ifdef HAVE_RECVFROM + ares_socklen_t fromlen; +@@ -513,32 +513,41 @@ static void read_udp_packets(ares_channel channel, fd_set *read_fds, + /* To reduce event loop overhead, read and process as many + * packets as we can. */ + do { +- if (server->udp_socket == ARES_SOCKET_BAD) +- count = 0; +- +- else { +- if (server->addr.family == AF_INET) ++ if (server->udp_socket == ARES_SOCKET_BAD) { ++ read_len = -1; ++ } else { ++ if (server->addr.family == AF_INET) { + fromlen = sizeof(from.sa4); +- else ++ } else { + fromlen = sizeof(from.sa6); +- count = socket_recvfrom(channel, server->udp_socket, (void *)buf, +- sizeof(buf), 0, &from.sa, &fromlen); ++ } ++ read_len = socket_recvfrom(channel, server->udp_socket, (void *)buf, ++ sizeof(buf), 0, &from.sa, &fromlen); + } + +- if (count == -1 && try_again(SOCKERRNO)) ++ if (read_len == 0) { ++ /* UDP is connectionless, so result code of 0 is a 0-length UDP ++ * packet, and not an indication the connection is closed like on ++ * tcp */ + continue; +- else if (count <= 0) ++ } else if (read_len < 0) { ++ if (try_again(SOCKERRNO)) ++ continue; ++ + handle_error(channel, i, now); ++ + #ifdef HAVE_RECVFROM +- else if (!same_address(&from.sa, &server->addr)) ++ } else if (!same_address(&from.sa, &server->addr)) { + /* The address the response comes from does not match the address we + * sent the request to. Someone may be attempting to perform a cache + * poisoning attack. */ +- break; ++ continue; + #endif +- else +- process_answer(channel, buf, (int)count, i, 0, now); +- } while (count > 0); ++ ++ } else { ++ process_answer(channel, buf, (int)read_len, i, 0, now); ++ } ++ } while (read_len >= 0); + } + } + +-- +2.38.1 + diff --git a/SPECS/c-ares.spec b/SPECS/c-ares.spec index e5487c8..89fde6d 100644 --- a/SPECS/c-ares.spec +++ b/SPECS/c-ares.spec @@ -3,7 +3,7 @@ Summary: A library that performs asynchronous DNS operations Name: c-ares Version: 1.17.1 -Release: 5%{?dist} +Release: 5%{?dist}.1 License: MIT URL: http://c-ares.haxx.se/ Source0: http://c-ares.haxx.se/download/%{name}-%{version}.tar.gz @@ -11,6 +11,8 @@ Source0: http://c-ares.haxx.se/download/%{name}-%{version}.tar.gz Source1: LICENSE Patch0: 0001-Use-RPM-compiler-options.patch Patch1: 0002-fix-CVE-2021-3672.patch +Patch2: 0003-Merge-pull-request-from-GHSA-9g78-jv2r-p7vc.patch + BuildRequires: gcc %if %{use_cmake} BuildRequires: cmake @@ -83,6 +85,9 @@ rm -f $RPM_BUILD_ROOT/%{_libdir}/libcares.la %{_mandir}/man3/ares_* %changelog +* Wed May 31 2023 Alexey Tikhonov - 1.17.1-5.1 +- Resolves: rhbz#2209519 - CVE-2023-32067 c-ares: 0-byte UDP payload Denial of Service [rhel-9.2.0.z] + * Fri Nov 26 2021 Alexey Tikhonov - 1.17.1-5 - Resolves: rhbz#2014523 - c-ares: missing input validation of host names may lead to Domain Hijacking [rhel-9]