!110 fix CVE-2023-49285 CVE-2023-49286
From: @yangl777 Reviewed-by: @sunsuwan Signed-off-by: @sunsuwan
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34
backport-CVE-2023-49285.patch
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34
backport-CVE-2023-49285.patch
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@ -0,0 +1,34 @@
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From deee944f9a12c9fd399ce52f3e2526bb573a9470 Mon Sep 17 00:00:00 2001
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From: Alex Rousskov <rousskov@measurement-factory.com>
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Date: Wed, 25 Oct 2023 19:41:45 +0000
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Subject: [PATCH] RFC 1123: Fix date parsing (#1538)
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The bug was discovered and detailed by Joshua Rogers at
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https://megamansec.github.io/Squid-Security-Audit/datetime-overflow.html
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where it was filed as "1-Byte Buffer OverRead in RFC 1123 date/time
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Handling".
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Conflict:NA
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Reference:https://github.com/squid-cache/squid/commit/deee944f9a12c9fd399ce52f3e2526bb573a9470
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---
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src/time/rfc1123.cc | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/src/time/rfc1123.cc b/src/time/rfc1123.cc
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index d89d22262f6..7524959edb0 100644
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--- a/src/time/rfc1123.cc
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+++ b/src/time/rfc1123.cc
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@@ -50,7 +50,13 @@ make_month(const char *s)
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char month[3];
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month[0] = xtoupper(*s);
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+ if (!month[0])
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+ return -1; // protects *(s + 1) below
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+
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month[1] = xtolower(*(s + 1));
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+ if (!month[1])
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+ return -1; // protects *(s + 2) below
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+
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month[2] = xtolower(*(s + 2));
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for (i = 0; i < 12; i++)
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85
backport-CVE-2023-49286.patch
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85
backport-CVE-2023-49286.patch
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@ -0,0 +1,85 @@
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From 6014c6648a2a54a4ecb7f952ea1163e0798f9264 Mon Sep 17 00:00:00 2001
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From: Alex Rousskov <rousskov@measurement-factory.com>
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Date: Fri, 27 Oct 2023 21:27:20 +0000
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Subject: [PATCH] Exit without asserting when helper process startup fails
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(#1543)
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... to dup() after fork() and before execvp().
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Assertions are for handling program logic errors. Helper initialization
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code already handled system call errors correctly (i.e. by exiting the
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newly created helper process with an error), except for a couple of
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assert()s that could be triggered by dup(2) failures.
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This bug was discovered and detailed by Joshua Rogers at
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https://megamansec.github.io/Squid-Security-Audit/ipc-assert.html
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where it was filed as 'Assertion in Squid "Helper" Process Creator'.
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Conflict:NA
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Reference:https://github.com/squid-cache/squid/commit/6014c6648a2a54a4ecb7f952ea1163e0798f9264
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---
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src/ipc.cc | 32 ++++++++++++++++++++++++++------
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1 file changed, 26 insertions(+), 6 deletions(-)
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diff --git a/src/ipc.cc b/src/ipc.cc
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index 40d34b4755a..1afc4d5cf3c 100644
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--- a/src/ipc.cc
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+++ b/src/ipc.cc
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@@ -22,6 +22,11 @@
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#include <chrono>
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#include <thread>
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+#include <cstdlib>
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+
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+#if HAVE_UNISTD_H
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+#include <unistd.h>
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+#endif
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static const char *hello_string = "hi there\n";
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#ifndef HELLO_BUF_SZ
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@@ -362,6 +367,22 @@ ipcCreate(int type, const char *prog, const char *const args[], const char *name
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}
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PutEnvironment();
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+
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+ // A dup(2) wrapper that reports and exits the process on errors. The
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+ // exiting logic is only suitable for this child process context.
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+ const auto dupOrExit = [prog,name](const int oldFd) {
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+ const auto newFd = dup(oldFd);
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+ if (newFd < 0) {
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+ const auto savedErrno = errno;
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+ debugs(54, DBG_CRITICAL, "ERROR: Helper process initialization failure: " << name <<
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+ Debug::Extra << "helper (CHILD) PID: " << getpid() <<
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+ Debug::Extra << "helper program name: " << prog <<
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+ Debug::Extra << "dup(2) system call error for FD " << oldFd << ": " << xstrerr(savedErrno));
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+ _exit(EXIT_FAILURE);
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+ }
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+ return newFd;
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+ };
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+
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/*
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* This double-dup stuff avoids problems when one of
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* crfd, cwfd, or debug_log are in the rage 0-2.
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@@ -369,17 +390,16 @@ ipcCreate(int type, const char *prog, const char *const args[], const char *name
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do {
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/* First make sure 0-2 is occupied by something. Gets cleaned up later */
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- x = dup(crfd);
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- assert(x > -1);
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- } while (x < 3 && x > -1);
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+ x = dupOrExit(crfd);
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+ } while (x < 3);
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close(x);
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- t1 = dup(crfd);
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+ t1 = dupOrExit(crfd);
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- t2 = dup(cwfd);
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+ t2 = dupOrExit(cwfd);
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- t3 = dup(fileno(debug_log));
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+ t3 = dupOrExit(fileno(debug_log));
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assert(t1 > 2 && t2 > 2 && t3 > 2);
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10
squid.spec
10
squid.spec
@ -2,7 +2,7 @@
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Name: squid
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Version: 6.1
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Release: 3
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Release: 4
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Summary: The Squid proxy caching server
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Epoch: 7
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License: GPLv2+ and (LGPLv2+ and MIT and BSD and Public Domain)
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@ -27,6 +27,8 @@ Patch6: backport-CVE-2023-46846.patch
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Patch7: backport-CVE-2023-46847.patch
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Patch8: backport-CVE-2023-46848.patch
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Patch9: backport-CVE-2023-46724.patch
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Patch10: backport-CVE-2023-49285.patch
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Patch11: backport-CVE-2023-49286.patch
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Requires: bash
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Requires: httpd-filesystem
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@ -249,6 +251,12 @@ fi
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chgrp squid /var/cache/samba/winbindd_privileged >/dev/null 2>&1 || :
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%changelog
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* Tue Dec 05 2023 yanglu <yanglu72@h-partners.com> - 7:6.1-4
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- Type:cves
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- ID:CVE-2023-49285 CVE-2023-49286
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- SUG:NA
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- DESC:fix CVE-2023-49285 CVE-2023-49286
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* Thu Nov 02 2023 yanglu <yanglu72@h-partners.com> - 7:6.1-3
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- Type:CVE
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- ID:CVE-2023-46724
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