Use-after-free in Mozilla Firefox - CVE-2017-7805

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Main Vulnerability Database Vulnerabilities #VU8634

Use-after-free in Mozilla Firefox - CVE-2017-7805

Published: September 28, 2017


Vulnerability identifier: #VU8634
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-2017-7805
CWE-ID: CWE-416
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 use-after-free error during TLS 1.2 exchanges. A remote unauthenticated attacker can create a specially crafted web server, trick the victim into visiting it and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Affected software

Mozilla Firefox
Firefox ESR
Debian Linux
Gentoo Linux
Arch Linux
Amazon Linux AMI
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux EUS Compute Node
SUSE Linux
Ubuntu
Mozilla Thunderbird

How to mitigate CVE-2017-7805

Update to version 56.0.


External References

Related Security Bulletins