Main Vulnerability Database Vulnerabilities #VU9324

Security restrictions bypass in Mozilla Firefox - CVE-2017-7837

Published: November 15, 2017

Vulnerability identifier: #VU9324

CSH Severity: Low

CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2017-7837

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to SVG loaded through <img> tags can use <meta> tags within the SVG data to set cookies for that page. A remote attacker can set arbitrary cookies and track the user's browser through them.

Affected software

Mozilla Firefox
Arch Linux
Ubuntu

How to mitigate CVE-2017-7837

Update to version Firefox 57.

External References

https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/

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