Out-of-bounds write in Firefox ESR and Mozilla Firefox - CVE-2017-5461

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Main Vulnerability Database Vulnerabilities #VU6316

Out-of-bounds write in Firefox ESR and Mozilla Firefox - CVE-2017-5461

Published: April 19, 2017


Vulnerability identifier: #VU6316
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-2017-5461
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 during Base64 decoding operation in the Network Security Services (NSS) library. 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
Amazon Linux AMI
Arch Linux
Debian Linux
Gentoo Linux
SUSE Linux
Ubuntu
Fedora
nss (Alpine package)
Gentoo dev-libs/nss
firefox
Mozilla Thunderbird

How to mitigate CVE-2017-5461

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

nss (Alpine package) - update to 3.23-r1
firefox - update to 53.0-2.fc24

External References

Related Security Bulletins