Vulnerability identifier: #VU31848

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-2841

CWE-ID: CWE-191

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libexif
Universal components / Libraries / Libraries used by multiple products

Vendor: libexif.sourceforge.net

Description

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

The vulnerability exists due to integer underflow in the exif_entry_get_value function in exif-entry.c in the EXIF Tag Parsing Library. A remote attacker can create a specially crafted file and execute arbitrary code via vectors involving a crafted buffer-size parameter during the formatting of an EXIF tag, leading to a heap-based buffer overflow.

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

Mitigation
Install update from vendor's website.

Vulnerable software versions

libexif: 0.6.9 - 0.6.20

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External links
http://lists.opensuse.org/opensuse-security-announce/2012-07/msg00014.html
http://lists.opensuse.org/opensuse-security-announce/2012-07/msg00015.html
http://rhn.redhat.com/errata/RHSA-2012-1255.html
http://secunia.com/advisories/49988
http://sourceforge.net/mailarchive/message.php?msg_id=29534027
http://www.debian.org/security/2012/dsa-2559
http://www.securityfocus.com/bid/54437
http://www.ubuntu.com/usn/USN-1513-1

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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.