Critical severity · published Jan 26, 2022
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,…
9.1
CVSS
2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.0% · higher than 81% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
9.0; 10.0; 11.0 · source: NVD
FE
Fedora · Fedoraproject
35 · source: NVD
VC
Varnich Cache · Varnish-software
1.0.0 before 6.6.2; 4.1.1 before 4.1.11r6; 4.1 · source: NVD
VC
Varnish Cache · Varnish-software
6.0.0 before 6.0.10 · source: NVD
VC
Varnish Cache Plus · Varnish-software
6.0.0 before 6.0.9r4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-23959
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-23959
Mitigation
https://docs.varnish-software.com/security/VSV00008/
Mailing List
https://lists.debian.org/debian-lts-announce/2022/02/msg00014.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UMMDMQWNAE3BTSZUHXQHVAMZC5TLHLYT/
Mitigation
https://varnish-cache.org/security/VSV00008.html
Third Party Advisory
https://www.debian.org/security/2022/dsa-5088
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