An update for gcab is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The gcab package contains a utility for managing the Cabinet archives.
It can list, extract, and create Microsoft cabinet (.cab) files.

Security Fix(es) :

* gcab: Extracting malformed .cab files causes stack smashing potentially leading to arbitrary code execution (CVE-2018-5345)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

New upstream release

  - This fixes the security bug known as CVE-2018-5345

  - Add new API for fwupd

  - Do not encode timezone in generated files

  - Fix countless memory leaks when parsing corrupt files

  - Fix the calculation of the checksum on big endian     machines

  - Switch to the Meson buildsystem

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.

From Red Hat Security Advisory 2018:0350 :

An update for gcab is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The gcab package contains a utility for managing the Cabinet archives.
It can list, extract, and create Microsoft cabinet (.cab) files.

Security Fix(es) :

* gcab: Extracting malformed .cab files causes stack smashing potentially leading to arbitrary code execution (CVE-2018-5345)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has gcab packages installed that are affected by a vulnerability:

  - A stack-based buffer overflow within GNOME gcab through     0.7.4 can be exploited by malicious attackers to cause a     crash or, potentially, execute arbitrary code via a     crafted .cab file. (CVE-2018-5345)

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

It was discovered that gcab, a Microsoft Cabinet file manipulation tool, is prone to a stack-based buffer overflow vulnerability when extracting .cab files. An attacker can take advantage of this flaw to cause a denial-of-service or, potentially the execution of arbitrary code with the privileges of the user running gcab, if a specially crafted .cab file is processed.

Richard Hughes discovered that gcab incorrectly handled certain malformed cabinet files. If a user or automated system were tricked into opening a specially crafted cabinet file, a remote attacker could use this issue to cause gcab to crash, resulting in a denial of service, or possibly execute arbitrary code.

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

Upstream reports :

A stack-based buffer overflow within GNOME gcab through 0.7.4 can be exploited by malicious attackers to cause a crash or, potentially, execute arbitrary code via a crafted .cab file.

Security Fix(es) :

  - gcab: Extracting malformed .cab files causes stack     smashing potentially leading to arbitrary code execution     (CVE-2018-5345)

New upstream release

  - This fixes the security bug known as CVE-2018-5345

  - Do not encode timezone in generated files

  - Fix countless memory leaks when parsing corrupt files

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.

ID	Name	Product	Family	Published	Updated	Severity
107075	CentOS 7 : gcab (CESA-2018:0350)	Nessus	CentOS Local Security Checks	3/1/2018	12/31/2019	high
106518	Fedora 27 : gcab (2018-87971e3c98)	Nessus	Fedora Local Security Checks	1/31/2018	1/6/2021	high
107015	Oracle Linux 7 : gcab (ELSA-2018-0350)	Nessus	Oracle Linux Local Security Checks	2/27/2018	9/27/2019	high
127176	NewStart CGSL CORE 5.04 / MAIN 5.04 : gcab Vulnerability (NS-SA-2019-0020)	Nessus	NewStart CGSL Local Security Checks	8/12/2019	1/14/2021	high
106319	Debian DSA-4095-1 : gcab - security update	Nessus	Debian Local Security Checks	1/25/2018	11/13/2018	high
106348	Ubuntu 16.04 LTS : gcab vulnerability (USN-3546-1)	Nessus	Ubuntu Local Security Checks	1/25/2018	10/23/2023	high
106425	FreeBSD : gcab -- stack overflow (2cceb80e-c482-4cfd-81b3-2088d2c0ad53)	Nessus	FreeBSD Local Security Checks	1/29/2018	10/11/2019	high
107017	RHEL 7 : gcab (RHSA-2018:0350)	Nessus	Red Hat Local Security Checks	2/27/2018	10/24/2019	high
107020	Scientific Linux Security Update : gcab on SL7.x x86_64 (20180226)	Nessus	Scientific Linux Local Security Checks	2/27/2018	2/24/2020	high
107036	Fedora 26 : gcab (2018-c54ced412e)	Nessus	Fedora Local Security Checks	2/28/2018	1/6/2021	high

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