VulnerabilityModified

CVE-2022-23959

In Varnish Cache before 6.6.2 and 7.x before 7.0.2, Varnish Cache 6.0 LTS before 6.0.10, and and Varnish Enterprise (Cache Plus) 4.1.x before 4.1.11r6 and 6.0.x before 6.0.9r4, request smuggling can occur for HTTP/1 connections.

CRITICAL 9.1EPSS 1.97%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.97%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

CVSS 3.1: 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS: 1.97% probability · 79th percentile
CISA KEV: Not listed
Weakness: CWE-444
Affected: varnish-software/varnich cache · varnish-software/varnish cache · varnish-software/varnish cache plus · varnish cache project/varnish cache · fedoraproject/fedora · debian/debian linux
Source: cve@mitre.org

References

https://docs.varnish-software.com/security/VSV00008/Mitigation, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2022/02/msg00014.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UMMDMQWNAE3BTSZUHXQHVAMZC5TLHLYT/
https://varnish-cache.org/security/VSV00008.htmlMitigation, Vendor Advisory
https://www.debian.org/security/2022/dsa-5088Third Party Advisory
https://docs.varnish-software.com/security/VSV00008/Mitigation, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2022/02/msg00014.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UMMDMQWNAE3BTSZUHXQHVAMZC5TLHLYT/
https://varnish-cache.org/security/VSV00008.htmlMitigation, Vendor Advisory
https://www.debian.org/security/2022/dsa-5088Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.