CVE-2021-29991

Name

CVE-2021-29991

Description

Firefox incorrectly accepted a newline in a HTTP/3 header, interpretting it as two separate headers. This allowed for a header splitting attack against servers using HTTP/3. This vulnerability affects Firefox < 91.0.1 and Thunderbird < 91.0.1.

NVD Severity

high

Other trackers

CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia

Mailing lists

oss-security, full-disclosure, bugtraq

Exploits

Exploit DB, Metasploit

Forges

GitHub (code, issues), Aports (code, issues)

Type	URI
MISC	https://bugzilla.mozilla.org/show_bug.cgi?id=1724896
MISC	https://www.mozilla.org/security/advisories/mfsa2021-37/

CPE URI	Source package	Min version	Max version
`cpe:2.3:a:mozilla:firefox::::::::`	firefox	>= None	< 91.0.1
`cpe:2.3:a:mozilla:thunderbird::::::::`	thunderbird	>= None	< 91.0.1

References

Match rules

Vulnerable and fixed packages