Stepan Golosunov discovered that xdelta3, a diff utility which works with binary files, is affected by a buffer overflow vulnerability within the main_get_appheader function, which may lead to the execution of arbitrary code.

The remote host is affected by the vulnerability described in GLSA-201701-40 (xdelta: User-assisted execution of arbitrary code)

    A buffer overflow can be triggered within xdelta when ran against a       malicious input file.
  Impact :

    A remote attacker could coerce the victim to run xdelta against a       malicious input file. This may be leveraged by an attacker to crash       xdelta and gain control of program execution.
  Workaround :

    There is no known workaround at this time.

According to the version of the xdelta package installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - Buffer overflow in the main_get_appheader function in     xdelta3-main.h in xdelta3 before 3.0.9 allows remote     attackers to execute arbitrary code via a crafted input     file.(CVE-2014-9765)

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.

Stepan Golosunov reports :

Buffer overflow was found and fixed in xdelta3 binary diff tool that allows arbitrary code execution from input files at least on some systems.

It was discovered that xdelta3 incorrectly handled certain files. If a user or automated system were tricked into processing a specially crafted file, a remote attacker could use this issue to cause xdelta3 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.

It was discovered that there was a invalid memory address issue in libmatroska, an extensible open standard audio/video container format.

When reading a block group or a simple block that uses EBML lacing the frame sizes indicated in the lacing weren't checked against the available number of bytes. If the indicated frame size was bigger than the whole block's size the parser would read beyond the end of the buffer resulting in a heap information leak.

For Debian 6 Squeeze, this issue has been fixed in libmatroska version 0.8.1-1.1+deb6u1.

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 xdelta3 fixes the following security issue :

  - CVE-2014-9765: Fixed buffer overflow in     main_get_appheader. (boo#965791)

It was discovered that there was a buffer overflow in in xdelta3, a diff utility which works with binary files. This vulnerability allowed arbitrary code execution from input files.

For Debian 6 Squeeze, this issue has been fixed in xdelta3 version 0y.dfsg-1+deb6u1.

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.

ID	Name	Product	Family	Published	Updated	Severity
88867	Debian DSA-3484-1 : xdelta3 - security update	Nessus	Debian Local Security Checks	2/22/2016	1/11/2021	high
96544	GLSA-201701-40 : xdelta: User-assisted execution of arbitrary code	Nessus	Gentoo Local Security Checks	1/17/2017	1/11/2021	high
132217	EulerOS 2.0 SP3 : xdelta (EulerOS-SA-2019-2682)	Nessus	Huawei Local Security Checks	12/18/2019	4/3/2024	high
131659	EulerOS 2.0 SP2 : xdelta (EulerOS-SA-2019-2506)	Nessus	Huawei Local Security Checks	12/4/2019	4/8/2024	high
88745	FreeBSD : xdelta3 -- buffer overflow vulnerability (f1bf28c5-d447-11e5-b2bd-002590263bf5)	Nessus	FreeBSD Local Security Checks	2/16/2016	1/4/2021	high
88836	Ubuntu 14.04 LTS : xdelta3 vulnerability (USN-2901-1)	Nessus	Ubuntu Local Security Checks	2/18/2016	10/20/2023	high
88845	Debian DLA-420-1 : libmatroska security update	Nessus	Debian Local Security Checks	2/19/2016	1/11/2021	high
88923	openSUSE Security Update : xdelta3 (openSUSE-2016-248)	Nessus	SuSE Local Security Checks	2/24/2016	1/19/2021	high
88765	Debian DLA-417-1 : xdelta3 security update	Nessus	Debian Local Security Checks	2/17/2016	1/11/2021	high
88919	openSUSE Security Update : xdelta3 (openSUSE-2016-240)	Nessus	SuSE Local Security Checks	2/24/2016	1/19/2021	high
131826	EulerOS 2.0 SP5 : xdelta (EulerOS-SA-2019-2552)	Nessus	Huawei Local Security Checks	12/9/2019	4/5/2024	high

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