Amazon Linux AMI update for libxml2

Published: 2012-01-19

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2011-3905 CVE-2011-3919
CWE-ID	CWE-125 CWE-122
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Amazon Linux AMI Operating systems & Components / Operating system
Vendor	Amazon Web Services

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU44452

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2011-3905

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

libxml2, as used in Google Chrome before 16.0.912.63, allows remote attackers to cause a denial of service (out-of-bounds read) via unspecified vectors.

Mitigation

Update the affected packages:

i686:
    libxml2-devel-2.7.6-4.11.amzn1.i686
    libxml2-static-2.7.6-4.11.amzn1.i686
    libxml2-debuginfo-2.7.6-4.11.amzn1.i686
    libxml2-python-2.7.6-4.11.amzn1.i686
    libxml2-2.7.6-4.11.amzn1.i686

src:
    libxml2-2.7.6-4.11.amzn1.src

x86_64:
    libxml2-2.7.6-4.11.amzn1.x86_64
    libxml2-python-2.7.6-4.11.amzn1.x86_64
    libxml2-devel-2.7.6-4.11.amzn1.x86_64
    libxml2-debuginfo-2.7.6-4.11.amzn1.x86_64
    libxml2-static-2.7.6-4.11.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2012-36.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: #VU44415