The directrun function in directmachine.cpp in Libgraphite in Graphite 2 1.2.4, as used…
Priority MEDIUM 45CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.
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.
Why it matters now
EPSS 0.04065 90th percentileScored 2026-11-07
Fix Fixed Red Hat: 3 advisories
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 19
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:a:sil:graphite2:*:*:*:*:*:*:*:* | up to 1.2.4 | Vulnerable | Sil |
| cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | up to 42.0 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:firefox:38.0.1:*:*:*:*:*:*:* | 38.0.1 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:firefox:38.0.5:*:*:*:*:*:*:* | 38.0.5 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:firefox:38.1.0:*:*:*:*:*:*:* | 38.1.0 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:firefox:38.1.1:*:*:*:*:*:*:* | 38.1.1 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:firefox:38.2.0:*:*:*:*:*:*:* | 38.2.0 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:firefox:38.2.1:*:*:*:*:*:*:* | 38.2.1 | Vulnerable | Mozilla |
- cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:a:sil:graphite2:*:*:*:*:*:*:*:* Versions up to 1.2.4 Vulnerable ·Sil
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions up to 42.0 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:firefox:38.0.1:*:*:*:*:*:*:* Versions 38.0.1 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:firefox:38.0.5:*:*:*:*:*:*:* Versions 38.0.5 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:firefox:38.1.0:*:*:*:*:*:*:* Versions 38.1.0 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:firefox:38.1.1:*:*:*:*:*:*:* Versions 38.1.1 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:firefox:38.2.0:*:*:*:*:*:*:* Versions 38.2.0 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:firefox:38.2.1:*:*:*:*:*:*:* Versions 38.2.1 Vulnerable ·Mozilla
Show 9 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mozilla:firefox:38.3.0:*:*:*:*:*:*:* | 38.3.0 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:firefox:38.4.0:*:*:*:*:*:*:* | 38.4.0 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:firefox:38.5.0:*:*:*:*:*:*:* | 38.5.0 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:firefox:38.5.1:*:*:*:*:*:*:* | 38.5.1 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:firefox:38.5.2:*:*:*:*:*:*:* | 38.5.2 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:firefox:38.6.0:*:*:*:*:*:*:* | 38.6.0 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* | up to 38.5.1 | Vulnerable | Mozilla |
| cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* | 22 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* | 23 | Vulnerable | Fedoraproject |
- cpe:2.3:a:mozilla:firefox:38.3.0:*:*:*:*:*:*:* Versions 38.3.0 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:firefox:38.4.0:*:*:*:*:*:*:* Versions 38.4.0 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:firefox:38.5.0:*:*:*:*:*:*:* Versions 38.5.0 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:firefox:38.5.1:*:*:*:*:*:*:* Versions 38.5.1 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:firefox:38.5.2:*:*:*:*:*:*:* Versions 38.5.2 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:firefox:38.6.0:*:*:*:*:*:*:* Versions 38.6.0 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions up to 38.5.1 Vulnerable ·Mozilla
- cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* Versions 22 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* Versions 23 Vulnerable ·Fedoraproject
Remediation
Red Hat 3 advisories
- RHSA-2016:0594 Released 2016-04-05 · Red Hat rating Importantgraphite2 security, bug fix, and enhancement update
- Red Hat Enterprise Linux Client (v. 7) graphite2-1.3.6-1.el7_2
- Red Hat Enterprise Linux Client Optional (v. 7) graphite2-devel-1.3.6-1.el7_2
- 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
- Red Hat Enterprise Linux Server (v. 7) graphite2-1.3.6-1.el7_2, graphite2-1.3.6-1.el7_2.ppc
- Red Hat Enterprise Linux Server Optional (v. 7) graphite2-devel-1.3.6-1.el7_2, graphite2-devel-1.3.6-1.el7_2.ppc
- Red Hat Enterprise Linux Workstation (v. 7) graphite2-1.3.6-1.el7_2
- Red Hat Enterprise Linux Workstation Optional (v. 7) graphite2-devel-1.3.6-1.el7_2
- RHSA-2016:0258 Released 2016-02-18 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux Client (v. 7) thunderbird-38.6.0-1.el7_2
- Red Hat Enterprise Linux Desktop (v. 5 client) thunderbird-38.6.0-1.el5_11, thunderbird-38.6.0-1.el5_11.i386
- Red Hat Enterprise Linux Desktop (v. 6) thunderbird-38.6.0-1.el6_7
- Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) thunderbird-38.6.0-1.el5_11, thunderbird-38.6.0-1.el5_11.i386
- Red Hat Enterprise Linux Server Optional (v. 6) thunderbird-38.6.0-1.el6_7
- Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-38.6.0-1.el7_2
- Red Hat Enterprise Linux Workstation (v. 6) thunderbird-38.6.0-1.el6_7
- Red Hat Enterprise Linux Workstation (v. 7) thunderbird-38.6.0-1.el7_2
- RHSA-2016:0197 Released 2016-02-16 · Red Hat rating Criticalfirefox security update
- Red Hat Enterprise Linux (v. 5 server) firefox-38.6.1-1.el5_11, firefox-38.6.1-1.el5_11.i386
- Red Hat Enterprise Linux Client (v. 7) firefox-38.6.1-1.el7_2
- Red Hat Enterprise Linux Client Optional (v. 7) firefox-38.6.1-1.el7_2
- Red Hat Enterprise Linux Desktop (v. 5 client) firefox-38.6.1-1.el5_11, firefox-38.6.1-1.el5_11.i386
- Red Hat Enterprise Linux Desktop (v. 6) firefox-38.6.1-1.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_7
- 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
- Red Hat Enterprise Linux Server Optional (v. 6) firefox-38.6.1-1.el6_7, firefox-38.6.1-1.el6_7.ppc
- Red Hat Enterprise Linux Server Optional (v. 7) firefox-38.6.1-1.el7_2, firefox-38.6.1-1.el7_2.ppc
- Red Hat Enterprise Linux Workstation (v. 6) firefox-38.6.1-1.el6_7
- Red Hat Enterprise Linux Workstation (v. 7) firefox-38.6.1-1.el7_2
- 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
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux (v. 5 server) | Fixed | RHSA-2016:0197 |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2016:0197, RHSA-2016:0258, RHSA-2016:0594 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2016:0197, RHSA-2016:0594 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2016:0594 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2016:0594 |
| Red Hat Enterprise Linux Desktop (v. 5 client) | Fixed | RHSA-2016:0197, RHSA-2016:0258 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2016:0197, RHSA-2016:0258 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2016:0197 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2016:0197 |
| Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) | Fixed | RHSA-2016:0258 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2016:0197 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2016:0197, RHSA-2016:0594 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2016:0197, RHSA-2016:0258 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2016:0197, RHSA-2016:0258, RHSA-2016:0594 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2016:0197, RHSA-2016:0258 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2016:0197, RHSA-2016:0258, RHSA-2016:0594 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2016:0197 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2016:0197, RHSA-2016:0594 |
Timeline
- 2026-10-02 Threatist record created from CVE-2016-1521
- 2026-10-03 Alias added: GHSA-765v-rgjj-3mrx
References
Advisory 14
- openSUSE-SU-2016:0875
- GLSA-201701-35
- USN-2902-1
- RHSA-2016:0594
- openSUSE-SU-2016:0791
- DSA-3479
- http://blog.talosintel.com/2016/02/vulnerability-spotlight-libgraphite.html
- RHSA-2016:0258
- FEDORA-2016-4154a4d0ba
- RHSA-2016:0197
- SUSE-SU-2016:0779
- GLSA-201701-63
- FEDORA-2016-338a7e9925
- http://www.mozilla.org/security/announce/2016/mfsa2016-14.html
Sources
- CVE-2016-1521 · CVE Program
- CVE-2016-1521 · NVD
- FIRST EPSS
- GHSA-765v-rgjj-3mrx · GitHub Advisory Database · CC BY 4.0
- CVE-2016-1521 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences