Amazon Linux AMI update for git

Published: 2016-03-24

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2016-2315 CVE-2016-2324
CWE-ID	CWE-122
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Amazon Linux AMI Operating systems & Components / Operating system
Vendor	Amazon Web Services

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Heap-based buffer overflow

EUVDB-ID: #VU32317

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2016-2315

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in revision.c in git before 2.7.4 uses an incorrect integer data type, which. A remote attacker can use a to trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected packages:

i686:
    git-2.7.4-1.47.amzn1.i686
    git-svn-2.7.4-1.47.amzn1.i686
    git-daemon-2.7.4-1.47.amzn1.i686
    git-debuginfo-2.7.4-1.47.amzn1.i686

noarch:
    emacs-git-el-2.7.4-1.47.amzn1.noarch
    git-all-2.7.4-1.47.amzn1.noarch
    emacs-git-2.7.4-1.47.amzn1.noarch
    gitweb-2.7.4-1.47.amzn1.noarch
    git-bzr-2.7.4-1.47.amzn1.noarch
    git-p4-2.7.4-1.47.amzn1.noarch
    perl-Git-2.7.4-1.47.amzn1.noarch
    perl-Git-SVN-2.7.4-1.47.amzn1.noarch
    git-hg-2.7.4-1.47.amzn1.noarch
    git-email-2.7.4-1.47.amzn1.noarch
    git-cvs-2.7.4-1.47.amzn1.noarch

src:
    git-2.7.4-1.47.amzn1.src

x86_64:
    git-svn-2.7.4-1.47.amzn1.x86_64
    git-debuginfo-2.7.4-1.47.amzn1.x86_64
    git-2.7.4-1.47.amzn1.x86_64
    git-daemon-2.7.4-1.47.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3

cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*

External links

https://alas.aws.amazon.com/ALAS-2016-672.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Heap-based buffer overflow

EUVDB-ID: #VU32318