Vulnerability identifier: #VU33327

Vulnerability risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

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

---

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