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There was no limit to the number of HTTP/2 CONTINUATION frames that would be processed. A server could abuse this to create an Out of Memory condition in the browser. This vulnerability affects Firefox < 125, Firefox ESR < 115.10, and Thunderbird < 115.10.
Reserved 2024-04-04 | Published 2024-04-16 | Updated 2024-08-01 | Assigner mozillaDenial of Service using HTTP/2 CONTINUATION frames
Bartek Nowotarski via CERT
bugzilla.mozilla.org/show_bug.cgi?id=1881183
kb.cert.org/vuls/id/421644 (VU#421644 - HTTP/2 CONTINUATION frames can be utilized for DoS attacks)
lists.debian.org/debian-lts-announce/2024/04/msg00012.html
lists.debian.org/debian-lts-announce/2024/04/msg00013.html
www.mozilla.org/security/advisories/mfsa2024-18/
www.mozilla.org/security/advisories/mfsa2024-19/
www.mozilla.org/security/advisories/mfsa2024-20/
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