CVE-2016-1521 json
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…
published 2016-02-13 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-2616
- cvss
- 8.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 4.1%
- EPSS 4.1% chance of exploitation in 30 days, percentile 90%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- graphite2 Debian 14, Debian 13, Debian 12 1.3.5-1
debian advisories DEBIAN-CVE-2016-1521
- graphite2 Ubuntu 14.04 LTS 1.2.4-1ubuntu1.1
- graphite2 Ubuntu 16.04 LTS 1.3.5-1ubuntu1
ubuntu advisories UBUNTU-CVE-2016-1521
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- firefox RHEL 5 38.6.1-1.el5_11
- firefox RHEL 6 38.6.1-1.el6_7
- firefox RHEL 7 38.6.1-1.el7_2
- graphite2 RHEL 7 1.3.6-1.el7_2
- thunderbird RHEL 5 PRODUCTIVITY, RHEL 5 38.6.0-1.el5_11
- thunderbird RHEL 6 38.6.0-1.el6_7
- thunderbird RHEL 7 38.6.0-1.el7_2
red hat advisories RHSA-2016:0197RHSA-2016:0594RHSA-2016:0258
- graphite2 SLES for SAP 12 SP1, SLES for SAP 12, SLES 12 SP1 +5 more 1.3.1-6.1
suse advisories SUSE-SU-2016:0779-1
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2016-1521 updated cvss 6.8
graphite2: Out-of-bound read vulnerability triggered by crafted fonts
-
Red Hat Enterprise Linux (v. 5 server) firefox 38.6.1-1.el5_11 Red Hat Enterprise Linux Client (v. 7) firefox 38.6.1-1.el7_2, graphite2 1.3.6-1.el7_2, thunderbird 38.6.0-1.el7_2 Red Hat Enterprise Linux Client Optional (v. 7) firefox 38.6.1-1.el7_2fixed: vendor fix RHSA-2016:0197
-
Red Hat Enterprise Linux ComputeNode (v. 7) graphite2 1.3.6-1.el7_2 Red Hat Enterprise Linux ComputeNode Optional (v. 7) graphite2-devel 1.3.6-1.el7_2, graphite2-debuginfo 1.3.6-1.el7_2fixed: vendor fix RHSA-2016:0594
-
Red Hat Enterprise Linux Desktop (v. 5 client) firefox 38.6.1-1.el5_11, thunderbird 38.6.0-1.el5_11 Red Hat Enterprise Linux Desktop (v. 6) firefox 38.6.1-1.el6_7, thunderbird 38.6.0-1.el6_7 Red Hat Enterprise Linux Desktop Optional (v. 6) firefox 38.6.1-1.el6_7 Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox 38.6.1-1.el6_7fixed: vendor fix RHSA-2016:0197
-
Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) thunderbird 38.6.0-1.el5_11fixed: vendor fix RHSA-2016:0258
-
Red Hat Enterprise Linux Server (v. 6) firefox 38.6.1-1.el6_7 Red Hat Enterprise Linux Server (v. 7) firefox 38.6.1-1.el7_2, graphite2 1.3.6-1.el7_2 Red Hat Enterprise Linux Server Optional (v. 6) firefox 38.6.1-1.el6_7, thunderbird 38.6.0-1.el6_7 Red Hat Enterprise Linux Server Optional (v. 7) firefox 38.6.1-1.el7_2, thunderbird 38.6.0-1.el7_2 Red Hat Enterprise Linux Workstation (v. 6) firefox 38.6.1-1.el6_7, thunderbird 38.6.0-1.el6_7 Red Hat Enterprise Linux Workstation (v. 7) firefox 38.6.1-1.el7_2, graphite2 1.3.6-1.el7_2, thunderbird 38.6.0-1.el7_2fixed: vendor fix RHSA-2016:0197
+2 more productsfewer
Red Hat Enterprise Linux Workstation Optional (v. 6) firefox 38.6.1-1.el6_7 Red Hat Enterprise Linux Workstation Optional (v. 7) firefox 38.6.1-1.el7_2
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
4.06% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 8.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
-
lists.opensuse.org
/opensuse-security-announce/2016-03/msg00088.html
vendor-advisory
-
security.gentoo.org
/glsa/201701-35
vendor-advisory
-
ubuntu.com
/usn/USN-2902-1
vendor-advisory
-
rhn.redhat.com
/errata/RHSA-2016-0594.html
vendor-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-03/msg00058.html
vendor-advisory
-
debian.org
/security/2016/dsa-3479
vendor-advisory, third-party-advisory
-
rhn.redhat.com
/errata/RHSA-2016-0258.html
vendor-advisory
-
lists.fedoraproject.org
/pipermail/package-announce/2016-February/177520.html
vendor-advisory, third-party-advisory
-
rhn.redhat.com
/errata/RHSA-2016-0197.html
vendor-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-03/msg00052.html
vendor-advisory
-
security.gentoo.org
/glsa/201701-63
vendor-advisory
-
lists.fedoraproject.org
/pipermail/package-announce/2016-May/184623.html
vendor-advisory, third-party-advisory
-
securityfocus.com
/bid/82991
vdb-entry
- oracle.com /technetwork/topics/security/linuxbulletinapr2016-2952096.html
- oracle.com /technetwork/topics/security/linuxbulletinjan2016-2867209.html
-
blog.talosintel.com
/2016/02/vulnerability-spotlight-libgraphite.html
third-party-advisory
- h20566.www2.hpe.com /portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722
-
mozilla.org
/security/announce/2016/mfsa2016-14.html
third-party-advisory
Sources
- CVE List CVE-2016-1521
- NVD CVE-2016-1521
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.