The git_oid_nfmt function in commit.c in libgit2 before 0.24.3 allows remote attackers to cause a denial of service (NULL pointer dereference) via a cat-file command with a crafted object file.

The remote Ubuntu 16.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4798-1 advisory.

    It was discovered that libgit2 mishandled certain malformed git objects. A remote attacker could use this     vulnerability to cause a denial of service.

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.

This update for libgit2 fixes the following issues :

  - CVE-2016-8568: Fixed and out-of-bounds read in     git_oid_nfmt (bsc#1003810).

  - CVE-2016-8569: DoS using a NULL pointer dereference in     git_commit_message (bsc#1003810).

libgit2 was updated to fix two security issues.

These security issues were fixed :

  - CVE-2016-8568: Read out-of-bounds in git_oid_nfmt     (bsc#1003810).

  - CVE-2016-8569: DoS caused by a NULL pointer dereference     in git_commit_message (bsc#1003810). This update was     imported from the SUSE:SLE-12-SP2:Update update project.

Security fix for CVE-2016-8568, CVE-2016-8569

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.

Security fix for CVE-2016-8568, CVE-2016-8569

----

Update to 0.24.2

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	Severity
183701	Ubuntu 16.04 ESM : libgit2 vulnerabilities (USN-4798-1)	Nessus	Ubuntu Local Security Checks	medium
96647	openSUSE Security Update : libgit2 (openSUSE-2017-121)	Nessus	SuSE Local Security Checks	medium
96582	openSUSE Security Update : libgit2 (openSUSE-2017-110)	Nessus	SuSE Local Security Checks	medium
95756	openSUSE Security Update : libgit2 (openSUSE-2016-1450)	Nessus	SuSE Local Security Checks	medium
94806	Fedora 25 : libgit2 (2016-505d7fe198)	Nessus	Fedora Local Security Checks	medium
94185	Fedora 23 : libgit2 (2016-616a35205b)	Nessus	Fedora Local Security Checks	medium
94124	Fedora 24 : libgit2 (2016-bc51f4636f)	Nessus	Fedora Local Security Checks	medium

Detections

Analytics

CVE-2016-8569

medium

Tenable Plugins

medium

medium

medium

medium

medium

medium

medium