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.

An update of the libmspack package has been released.

The remote Redhat Enterprise Linux 7 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - libmspack, clamav: heap-based buffer overflow in mspack/lzxd.c (CVE-2017-6419)

  - 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)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

This plugin has been deprecated as it does not adhere to established standards for this style of check.

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)

  - 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)

  - 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)

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.

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.

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.

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.

This update for clamav fixes the following issues: Security issues fixed :

  - CVE-2012-6706: VMSF_DELTA filter inside the unrar     implementation allows an arbitrary memory write     (bsc#1045315).

  - CVE-2017-6419: A heap-based buffer overflow that can     lead to a denial of service in libmspack via a crafted     CHM file (bsc#1052449).

  - CVE-2017-11423: A stack-based buffer over-read that can     lead to a denial of service in mspack via a crafted CAB     file (bsc#1049423).

  - CVE-2018-1000085: An out-of-bounds heap read     vulnerability was found in XAR parser that can lead to a     denial of service (bsc#1082858).

  - CVE-2018-0202: Fixed two vulnerabilities in the PDF     parsing code (bsc#1083915).

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. 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 :

Security issues fixed :

  - CVE-2012-6706: VMSF_DELTA filter inside the unrar     implementation allows an arbitrary memory write     (bsc#1045315).

  - CVE-2017-6419: A heap-based buffer overflow that can     lead to a denial of service in libmspack via a crafted     CHM file (bsc#1052449).

  - CVE-2017-11423: A stack-based buffer over-read that can     lead to a denial of service in mspack via a crafted CAB     file (bsc#1049423).

  - CVE-2018-1000085: An out-of-bounds heap read     vulnerability was found in XAR parser that can lead to a     denial of service (bsc#1082858).

  - CVE-2018-0202: Fixed two vulnerabilities in the PDF     parsing code (bsc#1083915).

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

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)

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.

CVE-2017-6419 CVE-2017-11423

Two vulnerabilities have been fixed that can be used for denial of service or maybe unspecified impact via drafted files (heap-based buffer overflow and stack-based buffer over-read causing application crash)

For Debian 7 'Wheezy', these problems have been fixed in version 0.99.2+dfsg-0+deb7u5.

We recommend that you upgrade your clamav packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. 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

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. 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.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. 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.

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.

It was discovered that libsmpack, a library used to handle Microsoft compression formats, did not properly validate its input. A remote attacker could craft malicious CAB or CHM files and use this flaw to cause a denial of service via application crash, or potentially execute arbitrary code.

The remote Ubuntu 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3394-1 advisory.

    It was discovered that libmspack incorrectly handled certain malformed CHM files. A remote attacker could     use this issue to cause libmspack to crash, resulting in a denial of service, or possibly execute     arbitrary code. (CVE-2017-6419)

    It was discovered that libmspack incorrectly handled certain malformed CAB files. A remote attacker could     use this issue to cause libmspack to crash, resulting in a denial of service. (CVE-2017-6419)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
203400	Photon OS 4.0: Libmspack PHSA-2023-4.0-0369	Nessus	PhotonOS Local Security Checks	high
199887	RHEL 7 : libmspack (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	high
196183	RHEL 7 : libmspack,_clamav (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	high
132144	EulerOS 2.0 SP3 : libmspack (EulerOS-SA-2019-2609)	Nessus	Huawei Local Security Checks	high
131808	EulerOS 2.0 SP5 : libmspack (EulerOS-SA-2019-2534)	Nessus	Huawei Local Security Checks	high
131608	EulerOS 2.0 SP2 : libmspack (EulerOS-SA-2019-2454)	Nessus	Huawei Local Security Checks	high
121969	Photon OS 2.0: Libmspack PHSA-2018-2.0-0075	Nessus	PhotonOS Local Security Checks	medium
121862	Photon OS 1.0: Libmspack PHSA-2018-1.0-0167	Nessus	PhotonOS Local Security Checks	medium
109230	GLSA-201804-16 : ClamAV: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
108829	SUSE SLES11 Security Update : clamav (SUSE-SU-2018:0863-1)	Nessus	SuSE Local Security Checks	critical
108652	SUSE SLED12 / SLES12 Security Update : clamav (SUSE-SU-2018:0809-1)	Nessus	SuSE Local Security Checks	critical
108637	openSUSE Security Update : clamav (openSUSE-2018-314)	Nessus	SuSE Local Security Checks	critical
108601	Amazon Linux AMI : clamav (ALAS-2018-976)	Nessus	Amazon Linux Local Security Checks	critical
108311	Fedora 26 : clamav (2018-d2b08aa37f)	Nessus	Fedora Local Security Checks	critical
107169	Fedora 27 : clamav (2018-602b5345fa)	Nessus	Fedora Local Security Checks	critical
106780	Debian DLA-1279-1 : clamav security update	Nessus	Debian Local Security Checks	high
106456	SUSE SLED12 / SLES12 Security Update : clamav (SUSE-SU-2018:0255-1)	Nessus	SuSE Local Security Checks	critical
106455	SUSE SLES11 Security Update : clamav (SUSE-SU-2018:0254-1)	Nessus	SuSE Local Security Checks	critical
106431	openSUSE Security Update : clamav (openSUSE-2018-102)	Nessus	SuSE Local Security Checks	critical
105828	Fedora 27 : libmspack (2017-1af202a86b)	Nessus	Fedora Local Security Checks	high
103904	Fedora 25 : libmspack (2017-b97f9d82dc)	Nessus	Fedora Local Security Checks	high
103437	Fedora 26 : libmspack (2017-982bfabc4e)	Nessus	Fedora Local Security Checks	high
102598	Debian DSA-3946-1 : libmspack - security update	Nessus	Debian Local Security Checks	high
102582	Ubuntu 16.04 LTS : libmspack vulnerabilities (USN-3394-1)	Nessus	Ubuntu Local Security Checks	high

Detections

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CVE-2017-11423

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