Improper input validation in Mozilla Firefox - CVE-2017-7798

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Main Vulnerability Database Vulnerabilities #VU7827

Improper input validation in Mozilla Firefox - CVE-2017-7798

Published: August 14, 2017


Vulnerability identifier: #VU7827
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-2017-7798
CWE-ID: CWE-20
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 weakness exists due to improper sanitization of the web page source code. A remote attacker can trick the victim into visiting a specially crafted website with the style editor tool, trigger a XUL injection flaw in the Developer Tools feature and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Affected software

Mozilla Firefox
Arch Linux
Gentoo Linux
Debian Linux
Red Hat Enterprise Linux for x86_64
SUSE Linux
Ubuntu
Opensuse

How to mitigate CVE-2017-7798

Update to version 55.0.


External References

Related Security Bulletins