Double Free in Fontconfig Project
CVE-2016-5384
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.
Vulnerability class: Double Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (32.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 32.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Fontconfig Project
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux — versions 8.0
- Fedoraproject Fedora — versions 23, 24
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- www.ubuntu.com/usn/USN-3063-1 (vendor-advisory, Third Party Advisory)
- lists.freedesktop.org/archives/fontconfig/2016-August/005792.html (mailing-list, Patch, Mailing List, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-2601.html (vendor-advisory, Third Party Advisory)
- cgit.freedesktop.org/fontconfig/commit/ (Patch, Third Party Advisory)
- www.securityfocus.com/bid/92339 (VDB Entry, Third Party Advisory, vdb-entry)
- www.debian.org/security/2016/dsa-3644 (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2016-5384?
- CVE-2016-5384 is a high-severity vulnerability in Fontconfig Project, classified under Double Free. CVSS score: 7.8/10. Published 2016-08-13.
- How severe is CVE-2016-5384?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2016-5384 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.