Security fix for CVE-2017-6419 and CVE-2017-11423

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for clamav fixes the following issues :

  - Update to security release 0.99.3 (bsc#1077732)

  - CVE-2017-12376 (ClamAV Buffer Overflow in handle_pdfname     Vulnerability)

  - CVE-2017-12377 (ClamAV Mew Packet Heap Overflow     Vulnerability)

  - CVE-2017-12379 (ClamAV Buffer Overflow in     messageAddArgument Vulnerability)

  - these vulnerabilities could have allowed an     unauthenticated, remote attacker to cause a denial of     service (DoS) condition or potentially execute arbitrary     code on an affected device.

  - CVE-2017-12374 (ClamAV use-after-free Vulnerabilities)

  - CVE-2017-12375 (ClamAV Buffer Overflow Vulnerability)

  - CVE-2017-12378 (ClamAV Buffer Over Read Vulnerability)

  - CVE-2017-12380 (ClamAV Null Dereference Vulnerability)

  - these vulnerabilities could have allowed an     unauthenticated, remote attacker to cause a denial of     service (DoS) condition on an affected device.

  - CVE-2017-6420 (bsc#1052448)

  - this vulnerability could have allowed remote attackers     to cause a denial of service (use-after-free) via a     crafted PE file with WWPack compression.

  - CVE-2017-6419 (bsc#1052449)

  - ClamAV could have allowed remote attackers to cause a     denial of service (heap-based buffer overflow and     application crash) or possibly have unspecified other     impact via a crafted CHM file.

  - CVE-2017-11423 (bsc#1049423)

  - ClamAV could have allowed remote attackers to cause a     denial of service (stack-based buffer over-read and     application crash) via a crafted CAB file.

  - CVE-2017-6418 (bsc#1052466)

  - ClamAV could have allowed remote attackers to cause a     denial of service (out-of-bounds read) via a crafted     e-mail message.

  - update upstream keys in the keyring

  - provide and obsolete clamav-nodb to trigger it's removal     in Leap bsc#1040662

This update was imported from the SUSE:SLE-12:Update update project.

According to the versions of the libmspack package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - chmd_read_headers in mspack/chmd.c in libmspack before     0.8alpha accepts a filename that has '\0' as its first     or second character (such as the '/\0'     name).(CVE-2018-18585)

  - ** DISPUTED ** chmextract.c in the chmextract sample     program, as distributed with libmspack before 0.8alpha,     does not protect against absolute/relative pathnames in     CHM files, leading to Directory Traversal. NOTE: the     vendor disputes that this is a libmspack vulnerability,     because chmextract.c was only intended as a source-code     example, not a supported application.(CVE-2018-18586)

  - The cabd_read_string function in mspack/cabd.c in     libmspack 0.5alpha, as used in ClamAV 0.99.2 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-2017-11423)

  - mspack/lzxd.c in libmspack 0.5alpha, as used in ClamAV     0.99.2, allows remote attackers to cause a denial of     service (heap-based buffer overflow and application     crash) or possibly have unspecified other impact via a     crafted CHM file.(CVE-2017-6419)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Update to 0.99.4

0.99.4 addresses a few outstanding vulnerability bugs. It includes fixes for :

  - CVE-2012-6706

  - CVE-2017-6419

  - CVE-2017-11423 

  - CVE-2018-1000085 

There are also a few bug fixes that were not assigned CVE&rsquo;s, but were important enough to address while we had the chance. One of these was the notorious file descriptor exhaustion bug that caused outages late last January.

In addition to the above, 0.99.4 fixes :

  - CVE-2018-0202: Two newly reported vulnerabilities in the     PDF parsing code.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the libmspack package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - chmd_read_headers in mspack/chmd.c in libmspack before     0.8alpha accepts a filename that has '\0' as its first     or second character (such as the '/\0'     name).(CVE-2018-18585)

  - The cabd_read_string function in mspack/cabd.c in     libmspack 0.5alpha, as used in ClamAV 0.99.2 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-2017-11423)

  - mspack/lzxd.c in libmspack 0.5alpha, as used in ClamAV     0.99.2, allows remote attackers to cause a denial of     service (heap-based buffer overflow and application     crash) or possibly have unspecified other impact via a     crafted CHM file.(CVE-2017-6419)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An update of the libmspack package has been released.

Heap-based buffer overflow in mspack/lzxd.c

mspack/lzxd.c in libmspack 0.5alpha, as used in ClamAV 0.99.2, allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted CHM file. (CVE-2017-6419)

Out-of-bounds access in the PDF parser (CVE-2018-0202)

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-2012-6706)

ClamAV version version 0.99.3 contains a Out of bounds heap memory read vulnerability in XAR parser, function xar_hash_check() that can result in Leaking of memory, may help in developing exploit chains..
This attack appear to be exploitable via The victim must scan a crafted XAR file. (CVE-2018-1000085)

Stack-based buffer over-read in cabd_read_string function

The cabd_read_string function in mspack/cabd.c in libmspack 0.5alpha, as used in ClamAV 0.99.2 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-2017-11423)

The remote host is affected by the vulnerability described in GLSA-201804-16 (ClamAV: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in ClamAV. Please review       the CVE identifiers referenced below for details.
  Impact :

    A remote attacker, through multiple vectors, could execute arbitrary       code, cause a Denial of Service condition, or have other unspecified       impacts.
  Workaround :

    There is no known workaround at this time.

ID	名稱	產品	系列	已發布	已更新	嚴重性
103437	Fedora 26 : libmspack (2017-982bfabc4e)	Nessus	Fedora Local Security Checks	2017/9/25	2025/11/20	high
106431	openSUSE Security Update : clamav (openSUSE-2018-102)	Nessus	SuSE Local Security Checks	2018/1/29	2025/10/31	critical
131808	EulerOS 2.0 SP5 : libmspack (EulerOS-SA-2019-2534)	Nessus	Huawei Local Security Checks	2019/12/9	2024/4/5	high
107169	Fedora 27 : clamav (2018-602b5345fa)	Nessus	Fedora Local Security Checks	2018/3/7	2025/10/27	critical
108311	Fedora 26 : clamav (2018-d2b08aa37f)	Nessus	Fedora Local Security Checks	2018/3/14	2025/2/4	critical
131608	EulerOS 2.0 SP2 : libmspack (EulerOS-SA-2019-2454)	Nessus	Huawei Local Security Checks	2019/12/4	2024/4/8	high
105828	Fedora 27 : libmspack (2017-1af202a86b)	Nessus	Fedora Local Security Checks	2018/1/15	2025/11/6	high
121862	Photon OS 1.0: Libmspack PHSA-2018-1.0-0167	Nessus	PhotonOS Local Security Checks	2019/2/7	2022/5/24	medium
108601	Amazon Linux AMI : clamav (ALAS-2018-976)	Nessus	Amazon Linux Local Security Checks	2018/3/27	2024/12/6	critical
109230	GLSA-201804-16 : ClamAV: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	2018/4/23	2024/10/29	critical
203400	Photon OS 4.0: Libmspack PHSA-2023-4.0-0369	Nessus	PhotonOS Local Security Checks	2024/7/23	2026/11/2	high

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