Double Free in Freedesktop Fontconfig



Published: 2016-08-13 | Updated: 2020-07-28
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2016-5384
CWE-ID CWE-415
Exploitation vector Local
Public exploit N/A
Vulnerable software
Subscribe 		Fontconfig
Universal components / Libraries / Libraries used by multiple products

Vendor Freedesktop.org

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Double Free

EUVDB-ID: #VU32257

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-5384

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

The vulnerability allows a local authenticated user to execute arbitrary code.

fontconfig before 2.12.1 does not validate offsets, which allows local users to trigger arbitrary free calls and consequently conduct double free attacks and execute arbitrary code via a crafted cache file.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Fontconfig: 2.12.0

CPE2.3 External links

http://rhn.redhat.com/errata/RHSA-2016-2601.html
http://www.debian.org/security/2016/dsa-3644
http://www.securityfocus.com/bid/92339
http://www.ubuntu.com/usn/USN-3063-1
http://cgit.freedesktop.org/fontconfig/commit/?id=7a4a5bd7897d216f0794ca9dbce0a4a5c9d14940
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6CJ45VRAMCIISHOVKFVOQYQUSTUJP7FC/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GGOS4YYB7UYAWX5AEXJZHDIX4ZMSXSW5/
http://lists.freedesktop.org/archives/fontconfig/2016-August/005792.html


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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



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