Out-of-bounds write in Firefox ESR and Mozilla Firefox - CVE-2017-5436

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Main Vulnerability Database Vulnerabilities #VU6315

Out-of-bounds write in Firefox ESR and Mozilla Firefox - CVE-2017-5436

Published: April 19, 2017


Vulnerability identifier: #VU6315
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-5436
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to boundary error in the Graphite 2 library when processing Graphite fonts. A remote attacker can trigger out-of-bounds write and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.


Affected software

Firefox ESR
Mozilla Firefox
Gentoo Linux
Arch Linux
Red Hat Enterprise Linux for x86_64
SUSE Linux
Ubuntu
Mozilla Thunderbird
Dell EMC Unity VSA Operating Environment (OE)
Dell EMC Unity Operating Environment (OE)

How to mitigate CVE-2017-5436

Update to Firefox 53, Firefox ESR 45.9 or Firefox ESR 52.1.

Dell EMC Unity VSA Operating Environment (OE) - update to 5.0.0.0.5.116
Dell EMC Unity Operating Environment (OE) - update to 5.0.0.0.5.116

External References

Related Security Bulletins