CVE-2016-2793: Buffer Overflow
First published: Sun Mar 13 2016(Updated: )
CachedCmap.cpp in Graphite 2 before 1.3.6, as used in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7, allows remote attackers to cause a denial of service (buffer over-read) or possibly have unspecified other impact via a crafted Graphite smart font.
Credit: security@mozilla.org security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Oracle Linux | =5.0 | |
| Oracle Linux | =6 | |
| Oracle Linux | =7 | |
| Mozilla Firefox | <=44.0.2 | |
| Mozilla Firefox | =38.0 | |
| Mozilla Firefox | =38.0.1 | |
| Mozilla Firefox | =38.0.5 | |
| Mozilla Firefox | =38.1.0 | |
| Mozilla Firefox | =38.1.1 | |
| Mozilla Firefox | =38.2.0 | |
| Mozilla Firefox | =38.2.1 | |
| Mozilla Firefox | =38.3.0 | |
| Mozilla Firefox | =38.4.0 | |
| Mozilla Firefox | =38.5.0 | |
| Mozilla Firefox | =38.5.1 | |
| Mozilla Firefox | =38.6.0 | |
| Mozilla Firefox | =38.6.1 | |
| libgraphite2 | <=1.3.5 | |
| openSUSE | =42.1 | |
| openSUSE | =13.1 | |
| openSUSE | =13.2 | |
| SUSE Linux Enterprise Server | =12.0 | |
| Mozilla Firefox ESR | =38.0 | |
| Mozilla Firefox ESR | =38.0.1 | |
| Mozilla Firefox ESR | =38.0.5 | |
| Mozilla Firefox ESR | =38.1.0 | |
| Mozilla Firefox ESR | =38.1.1 | |
| Mozilla Firefox ESR | =38.2.0 | |
| Mozilla Firefox ESR | =38.2.1 | |
| Mozilla Firefox ESR | =38.3.0 | |
| Mozilla Firefox ESR | =38.4.0 | |
| Mozilla Firefox ESR | =38.5.0 | |
| Mozilla Firefox ESR | =38.5.1 | |
| Mozilla Firefox ESR | =38.6.0 | |
| Mozilla Firefox ESR | =38.6.1 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00027.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00029.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00031.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00050.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00068.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00089.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00091.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00093.html
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00006.html
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00008.html
- http://www.debian.org/security/2016/dsa-3510
- http://www.debian.org/security/2016/dsa-3515
- http://www.debian.org/security/2016/dsa-3520
- http://www.mozilla.org/security/announce/2016/mfsa2016-37.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- http://www.securityfocus.com/bid/84222
- http://www.securitytracker.com/id/1035215
- http://www.ubuntu.com/usn/USN-2917-1
- http://www.ubuntu.com/usn/USN-2917-2
- http://www.ubuntu.com/usn/USN-2917-3
- http://www.ubuntu.com/usn/USN-2927-1
- http://www.ubuntu.com/usn/USN-2934-1
- https://bugzilla.mozilla.org/show_bug.cgi?id=1243513
- https://security.gentoo.org/glsa/201605-06
- https://security.gentoo.org/glsa/201701-63
Frequently Asked Questions
What is the severity of CVE-2016-2793?
CVE-2016-2793 has a severity rating of medium as it allows remote attackers to cause a denial of service.
How do I fix CVE-2016-2793?
To fix CVE-2016-2793, update to Graphite 2 version 1.3.6 or later and ensure that your browser is updated to the latest version.
Which systems are affected by CVE-2016-2793?
CVE-2016-2793 affects multiple versions of Firefox, Firefox ESR, and Graphite 2 across various operating systems including Oracle Linux and openSUSE.
What impact does CVE-2016-2793 have?
CVE-2016-2793 can lead to denial of service due to a buffer over-read when processing specially crafted Graphite smart fonts.
Is there a workaround for CVE-2016-2793 if I can't update immediately?
As a workaround for CVE-2016-2793, users can avoid opening documents or files that utilize Graphite smart fonts until a patch is applied.
- agent/references
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- source/MITRE
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- version/mozilla firefox/38.0
- version/mozilla firefox/38.0.1
- version/mozilla firefox/38.0.5
- version/mozilla firefox/38.1.0
- version/mozilla firefox/38.1.1
- version/mozilla firefox/38.2.0
- version/mozilla firefox/38.2.1
- version/mozilla firefox/38.3.0
- version/mozilla firefox/38.4.0
- version/mozilla firefox/38.5.0
- version/mozilla firefox/38.5.1
- version/mozilla firefox/38.6.0
- version/mozilla firefox/38.6.1
- vendor/sil
- canonical/libgraphite2
- version/libgraphite2/1.3.5
- vendor/opensuse
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- version/opensuse/42.1
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- version/mozilla firefox esr/38.6.1