Arch Linux Security Advisory ASA-201803-14
==========================================

Severity: Critical
Date    : 2018-03-18
CVE-ID  : CVE-2012-6706 CVE-2017-6419 CVE-2017-11423 CVE-2018-0202
          CVE-2018-1000085
Package : clamav
Type    : multiple issues
Remote  : Yes
Link    : https://security.archlinux.org/AVG-602

Summary
=======

The package clamav before version 0.99.4-1 is vulnerable to multiple
issues including arbitrary code execution and denial of service.

Resolution
==========

Upgrade to 0.99.4-1.

# pacman -Syu "clamav>=0.99.4-1"

The problems have been fixed upstream in version 0.99.4.

Workaround
==========

None.

Description
===========

- CVE-2012-6706 (arbitrary code execution)

A VMSF_DELTA memory corruption was discovered in unrar before 5.5.5, as
used in Sophos Anti-Virus Threat Detection Engine before 3.37.2 and
other products, that can lead to arbitrary code execution. An integer
overflow can be caused in DataSize+CurChannel. The result is a negative
value of the "DestPos" variable, which allows the attacker to write out
of bounds when setting Mem[DestPos].

- CVE-2017-6419 (arbitrary code execution)

mspack/lzxd.c in libmspack 0.5alpha, as used in ClamAV before 0.99.4,
allows remote attackers to cause a denial of service (heap-based buffer
overflow and application crash) or possibly execute arbitrary code via
a crafted CHM file.

- CVE-2017-11423 (denial of service)

The cabd_read_string function in mspack/cabd.c in libmspack 0.5alpha,
as used in ClamAV before 0.99.4  and other products, allows remote
attackers to cause a denial of service (stack-based buffer over-read
and application crash) via a crafted CAB file.

- CVE-2018-0202 (arbitrary code execution)

A heap overflow has been discovered in ClamAv before 0.99.4 in
pdf_parse_string possibly leading to arbitrary code execution by
inspecting a specially crafted PDF file.

- CVE-2018-1000085 (denial of service)

A heap-based out-of-bounds read has been found in the xar_hash_check
function of the xar decoder of ClamAV before 0.99.4, leading to a
denial of service.

Impact
======

A remote attacker can cause a denial of service or execute arbitrary
code on the affected host by submitting a crafted file for inspection
by ClamAV.

References
==========

http://www.openwall.com/lists/oss-security/2017/06/21/9
https://bugs.chromium.org/p/project-zero/issues/detail?id=1286
https://github.com/Cisco-Talos/clamav-devel/commit/d4699442bce76574573dc564e7f2177d679b88bd
https://bugzilla.clamav.net/show_bug.cgi?id=11701
https://github.com/Cisco-Talos/clamav-devel/commit/a83773682e856ad6529ba6db8d1792e6d515d7f1
https://github.com/kyz/libmspack/commit/6139a0b9e93fcb7fcf423e56aa825bc869e02229
https://bugzilla.clamav.net/show_bug.cgi?id=11873
https://github.com/kyz/libmspack/commit/17038206fcc384dcee6dd9e3a75f08fd3ddc6a38
https://github.com/Cisco-Talos/clamav-devel/commit/ffa31264a657618a0e40c51c01e4bfc32e244d13
https://github.com/Cisco-Talos/clamav-devel/commit/ada5f94e5cfb04e1ac2a6f383f2184753f475b96
https://github.com/hackerlib/hackerlib-vul/tree/master/clamav-vul
https://bugzilla.clamav.net/show_bug.cgi?id=11973
https://bugzilla.clamav.net/show_bug.cgi?id=11980
https://github.com/Cisco-Talos/clamav-devel/commit/87aaa10b29476958f5bf54b6119a133069f944fc
https://github.com/Cisco-Talos/clamav-devel/commit/700ed96af56077cb1a9bff7b91d21db112f6465d
https://github.com/Cisco-Talos/clamav-devel/commit/0df2fedf2805e574512c486b32a0fff4ed394560
https://github.com/Cisco-Talos/clamav-devel/commit/495fce917445063d519f14b0009cee025f817bc3
https://github.com/Cisco-Talos/clamav-devel/commit/99eadf7a9ad351210165312362d1f32b77c6f857
http://www.openwall.com/lists/oss-security/2017/09/29/4
https://github.com/Cisco-Talos/clamav-devel/commit/d96a6b8bcc7439fa7e3876207aa0a8e79c8451b6
https://bugzilla.clamav.net/show_bug.cgi?id=11588
https://security.archlinux.org/CVE-2012-6706
https://security.archlinux.org/CVE-2017-6419
https://security.archlinux.org/CVE-2017-11423
https://security.archlinux.org/CVE-2018-0202
https://security.archlinux.org/CVE-2018-1000085