QID 375824

Date Published: 2021-08-25

QID 375824: Mozilla Firefox Header Splitting Vulnerability(MFSA2021-37)

Firefox is a free and open-source web browser developed for Windows, OS X, and Linux, with a mobile version for Android.

Affected Products:
Prior to Firefox 91

QID Detection Logic (Authenticated):
This checks for vulnerable version of Firefox browser

This allowed for a header splitting attack against servers using HTTP/3.

CVSS V3 rated as Critical - 8.8 severity.

CVSS V2 rated as High - 7.5 severity.

Solution

Vendor has released fix to address these vulnerabilities. Refer to MFSA2021-37

Vendor References

MFSA2021-37 - www.mozilla.org/en-US/security/advisories/mfsa2021-37

CVEs related to QID 375824

CVE-2021-29991 |

Software Advisories

Advisory ID	Software	Component	Link
MFSA2021-37			www.mozilla.org/en-US/security/advisories/mfsa2021-37/

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