#VU33327 Buffer overflow in libarchive - CVE-2011-1777

Vulnerability identifier: #VU33327

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2011-1777

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libarchive
Client/Desktop applications / Software for archiving

Vendor: libarchive

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

Multiple buffer overflows in the (1) heap_add_entry and (2) relocate_dir functions in archive_read_support_format_iso9660.c in libarchive through 2.8.5 allow remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted ISO9660 image.

Mitigation
Install update from vendor's website.

Vulnerable software versions

libarchive: 2.8.0 - 2.8.5

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External links
https://code.google.com/p/libarchive/source/detail?r=3158
https://lists.apple.com/archives/security-announce/2012/May/msg00001.html
https://secunia.com/advisories/48034
https://support.apple.com/kb/HT5281
https://www.debian.org/security/2012/dsa-2413
https://bugzilla.redhat.com/show_bug.cgi?id=705849
https://rhn.redhat.com/errata/RHSA-2011-1507.html

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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.