CVE-2020-11080

Name
CVE-2020-11080
Description
In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection.
NVD Severity
medium
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)

References

Type URI
Patch https://github.com/nghttp2/nghttp2/commit/f8da73bd042f810f34d19f9eae02b46d870af394
Patch https://github.com/nghttp2/nghttp2/security/advisories/GHSA-q5wr-xfw9-q7xr
Patch https://github.com/nghttp2/nghttp2/commit/336a98feb0d56b9ac54e12736b18785c27f75090
Third Party Advisory https://www.debian.org/security/2020/dsa-4696
Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00024.html
Third Party Advisory https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AAC2AA36OTRHKSVM5OV7TTVB3CZIGEFL/
Third Party Advisory https://www.oracle.com/security-alerts/cpujul2020.html
Third Party Advisory https://www.oracle.com/security-alerts/cpuoct2020.html
Third Party Advisory https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/
Third Party Advisory https://www.oracle.com/security-alerts/cpujan2021.html
N/A https://www.oracle.com//security-alerts/cpujul2021.html
MLIST https://lists.debian.org/debian-lts-announce/2021/10/msg00011.html
MISC https://www.oracle.com/security-alerts/cpuapr2022.html

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:nghttp2:nghttp2:*:*:*:*:*:*:*:* nghttp2 >= None < 1.41.0

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
nghttp2 3.12-main 1.41.0-r0 Francesco Colista <fcolista@alpinelinux.org> fixed
nghttp2 3.11-main 1.40.0-r1 Francesco Colista <fcolista@alpinelinux.org> fixed
nghttp2 3.10-main 1.39.2-r1 Francesco Colista <fcolista@alpinelinux.org> fixed