[arch-security] [ASA-201611-17] libgit2: denial of service

[Levente Polyak]

Arch Linux Security Advisory ASA-201611-17
==========================================

Severity: Low
Date    : 2016-11-16
CVE-ID  : CVE-2016-8568 CVE-2016-8569
Package : libgit2
Type    : denial of service
Remote  : Yes
Link    : https://wiki.archlinux.org/index.php/CVE

Summary
=======

The package libgit2 before version 1:0.24.3-1 is vulnerable to denial
of service.

Resolution
==========

Upgrade to 1:0.24.3-1.

# pacman -Syu "libgit2>=1:0.24.3-1"

The problems have been fixed upstream in version 0.24.3.

Workaround
==========

None.

Description
===========

- CVE-2016-8568 (denial of service)

A heap-based read out-of-bounds access has been discovered while
parsing a malformed object file.

- CVE-2016-8569 (denial of service)

A null pointer dereference has been discovered while showing a
malformed object file.

Impact
======

A remote attacker is able to create specially crafted object files that
lead to an application crash resulting in denial of service.

References
==========

http://seclists.org/oss-sec/2016/q4/64
https://github.com/libgit2/libgit2/issues/3936
https://github.com/libgit2/libgit2/issues/3937
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-8568
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-8569

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