Buffer overflow in Mozilla Firefox
CVE-2016-1521
The directrun function in directmachine.cpp in Libgraphite in Graphite 2 1.2.4, as used in Mozilla Firefox before 43.0 and Firefox ESR 38.x before 38.6.1, does not validate a certain skip operation, which allows remote attackers to execute arbitrary code, obtain sensitive information, or cause a denial of service (out-of-bounds read and application crash) via a crafted Graphite smart font.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.041 (90.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.041 · newest: 0.041 · change: 0.000
Affected products
- Mozilla Firefox — versions 38.0.1, 38.0.5, 38.1.0
- Mozilla Thunderbird
- Sil Graphite2
- Debian Linux — versions 7.0, 8.0
- Fedoraproject Fedora — versions 22, 23
Weakness classification (CWE)
References
- lists.opensuse.org/opensuse-security-announce/2016-03/msg00088.html (vendor-advisory)
- security.gentoo.org/glsa/201701-35 (vendor-advisory)
- www.securityfocus.com/bid/82991 (vdb-entry)
- www.ubuntu.com/usn/USN-2902-1 (vendor-advisory)
- www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- rhn.redhat.com/errata/RHSA-2016-0594.html (vendor-advisory)
- www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- lists.opensuse.org/opensuse-security-announce/2016-03/msg00058.html (vendor-advisory)
- www.debian.org/security/2016/dsa-3479 (vendor-advisory, Third Party Advisory)
- blog.talosintel.com/2016/02/vulnerability-spotlight-libgraphite.html (Third Party Advisory)
Frequently asked questions
- What is CVE-2016-1521?
- CVE-2016-1521 is a high-severity vulnerability in Mozilla Firefox, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2016-02-13.
- How severe is CVE-2016-1521?
- High severity. CVSS v3 base score is 8.8 out of 10.