Apache HTTP Server: HTTP/2 DoS by memory exhaustion on endless continuation frames
43Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 91%
exploitation probability
91%top 1% of all CVEs
observed exploitation
nono source reports it
HTTP/2 incoming headers exceeding the limit are temporarily buffered in nghttp2 in order to generate an informative HTTP 413 response. If a client does not stop sending headers, this leads to memory exhaustion.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Apache Software Foundation · Apache HTTP ServerReferences
http://seclists.org/fulldisclosure/2024/Jul/18https://httpd.apache.org/security/vulnerabilities_24.htmlhttps://lists.debian.org/debian-lts-announce/2024/05/msg00013.htmlhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FO73U3SLBYFGIW2YKXOK7RI4D6DJSZ2B/https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MIUBKSCJGPJ6M2U63V6BKFDF725ODLG7/https://security.netapp.com/advisory/ntap-20240415-0013/https://support.apple.com/kb/HT214119https://www.kb.cert.org/vuls/id/421644https://www.openwall.com/lists/oss-security/2024/04/03/16http://www.openwall.com/lists/oss-security/2024/04/04/4