CVE-2024-28182: fedora DoS — Fix

Description

nghttp2 is an implementation of the Hypertext Transfer Protocol version 2 in C. The nghttp2 library prior to version 1.61.0 keeps reading the unbounded number of HTTP/2 CONTINUATION frames even after a stream is reset to keep HPACK context in sync. This causes excessive CPU usage to decode HPACK stream. nghttp2 v1.61.0 mitigates this vulnerability by limiting the number of CONTINUATION frames it accepts per stream. There is no workaround for this vulnerability.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness Type (CWE)

CWE-770 CWE-770

Affected Products

Vendor	Product	Versions
nghttp2	nghttp2	< 1.61.0
debian	debian_linux	All
debian	debian_linux	All
fedoraproject	fedora	All
fedoraproject	fedora	All
fedoraproject	fedora	All

References

Advisories & Patches

https://github.com/nghttp2/nghttp2/commit/00201ecd8f982da3b67d4f6868af72a1b03b14e0 https://github.com/nghttp2/nghttp2/commit/d71a4668c6bead55805d18810d633fbb98315af9 https://github.com/nghttp2/nghttp2/security/advisories/GHSA-x6x3-gv8h-m57q https://github.com/nghttp2/nghttp2/commit/00201ecd8f982da3b67d4f6868af72a1b03b14e0 https://github.com/nghttp2/nghttp2/commit/d71a4668c6bead55805d18810d633fbb98315af9 https://github.com/nghttp2/nghttp2/security/advisories/GHSA-x6x3-gv8h-m57q

Other References

http://www.openwall.com/lists/oss-security/2024/04/03/16 https://lists.debian.org/debian-lts-announce/2024/04/msg00026.html https://lists.fedoraproject.org/archives/list/[email protected]/message/AGOME6ZXJG7664IPQNVE3DL67E3YP3HY/ https://lists.fedoraproject.org/archives/list/[email protected]/message/J6ZMXUGB66VAXDW5J6QSTHM5ET25FGSA/ https://lists.fedoraproject.org/archives/list/[email protected]/message/PXJO2EASHM2OQQLGVDY5ZSO7UVDVHTDK/ http://www.openwall.com/lists/oss-security/2024/04/03/16 https://lists.debian.org/debian-lts-announce/2024/04/msg00026.html https://lists.debian.org/debian-lts-announce/2024/09/msg00041.html https://lists.fedoraproject.org/archives/list/[email protected]/message/AGOME6ZXJG7664IPQNVE3DL67E3YP3HY/ https://lists.fedoraproject.org/archives/list/[email protected]/message/J6ZMXUGB66VAXDW5J6QSTHM5ET25FGSA/

Frequently Asked Questions

What is CVE-2024-28182? +

nghttp2 is an implementation of the Hypertext Transfer Protocol version 2 in C. The nghttp2 library prior to version 1.61.0 keeps reading the unbounded number of HTTP/2 CONTINUATION frames even after a stream is reset to keep HPACK context in sync. This causes excessive CPU usage to decode HPACK stream. nghttp2 v1.61.0 mitigates this vulnerability by limiting the number of CONTINUATION frames it accepts per stream. There is no workaround for this vulnerability. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2024-28182? +

CVE-2024-28182 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-28182? +

CVE-2024-28182 affects products from debian, fedoraproject, nghttp2, specifically: debian_linux, fedora, nghttp2. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-28182? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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