CVE-2019-11751 — Logging-related command line parameters are not properly sanitized when Firefox

Logging-related command line parameters are not properly sanitized when Firefox is launched by another program, such as when a user clicks on malicious links in a chat application. This can be used to write a log file to an arbitrary location such as the Windows 'Startup

01What is this vulnerability?

Logging-related command line parameters are not properly sanitized when Firefox is launched by another program, such as when a user clicks on malicious links in a chat application. This can be used to write a log file to an arbitrary location such as the Windows 'Startup' folder. <br>*Note: this issue only affects Firefox on Windows operating systems.*. This vulnerability affects Firefox < 69 and…

02Affected products

Vendor	Product	Versions
Mozilla	Firefox	unspecified
Mozilla	Firefox ESR	unspecified

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-09-27T17:14:37.000Z
• Last modified: 2024-08-04T23:03:32.751Z

09References

• bugzilla.mozilla.org — https://bugzilla.mozilla.org/show_bug.cgi?id=1572838
• www.mozilla.org — https://www.mozilla.org/security/advisories/mfsa2019-25/
• www.mozilla.org — https://www.mozilla.org/security/advisories/mfsa2019-26/
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html