Vulnerability · Published Jan 26, 2022 · Assigned by mitre
CVE-2022-23959
Critical 9.1
In plain English
A critical-severity security flaw in the varnish package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.0% (higher than 81% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)9.1Critical
Exploit odds (30 days)2.0%top 19.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | varnish | 6.0.8-1.module_el8.5.0+2620+03a0c2cc.1 | ALSA-2022:0418 |
| AlmaLinux:8 | varnish | 6.0.8-1.module_el8.5.0+76+a10ffa55 | ALSA-2022:0418 |
| AlmaLinux:8 | varnish-devel | 6.0.8-1.module_el8.5.0+76+a10ffa55 | ALSA-2022:0418 |
| AlmaLinux:8 | varnish-devel | 6.0.8-1.module_el8.5.0+2620+03a0c2cc.1 | ALSA-2022:0418 |
| AlmaLinux:8 | varnish-docs | 6.0.8-1.module_el8.5.0+2620+03a0c2cc.1 | ALSA-2022:0418 |
| AlmaLinux:8 | varnish-docs | 6.0.8-1.module_el8.5.0+76+a10ffa55 | ALSA-2022:0418 |
| AlmaLinux:8 | varnish-modules | 0.15.0-6.module_el8.5.0+2620+03a0c2cc | ALSA-2022:0418 |
| AlmaLinux:8 | varnish-modules | 0.15.0-6.module_el8.5.0+76+a10ffa55 | ALSA-2022:0418 |
| Alpine:v3.20 | varnish | 7.0.2-r0 | ALPINE-CVE-2022-23959 |
| Alpine:v3.21 | varnish | 7.0.2-r0 | ALPINE-CVE-2022-23959 |
| Alpine:v3.22 | varnish | 7.0.2-r0 | ALPINE-CVE-2022-23959 |
| Alpine:v3.23 | varnish | 7.0.2-r0 | ALPINE-CVE-2022-23959 |
| Alpine:v3.24 | varnish | 7.0.2-r0 | ALPINE-CVE-2022-23959 |
| Debian:12 | varnish | 7.1.0-5 | DEBIAN-CVE-2022-23959 |
| Debian:13 | varnish | 7.1.0-5 | DEBIAN-CVE-2022-23959 |
| Rocky Linux:8 | varnish | 0:6.0.8-1.module+el8.5.0+677+2a78a869 | RLSA-2022:0418 |
| Rocky Linux:8 | varnish | 0:6.0.8-1.module+el8.5.0+736+fec10e21.1 | RLSA-2022:0418 |
| Rocky Linux:8 | varnish-modules | 0:0.15.0-6.module+el8.5.0+677+2a78a869 | RLSA-2022:0418 |
| Ubuntu:22.04:LTS | varnish | 6.6.1-1ubuntu0.2 | USN-5474-1 |
| Ubuntu:22.04:LTS | varnish | 6.6.1-1ubuntu0.2 | UBUNTU-CVE-2022-23959 |
| Ubuntu:24.04:LTS | varnish | no fix listed | UBUNTU-CVE-2022-23959 |
| Ubuntu:25.10 | varnish | no fix listed | UBUNTU-CVE-2022-23959 |
| Ubuntu:26.04:LTS | varnish | no fix listed | UBUNTU-CVE-2022-23959 |
| Ubuntu:26.10 | varnish | no fix listed | UBUNTU-CVE-2022-23959 |
Affected products (as reported)
References
- https://varnish-cache.org/security/VSV00008.html x_refsource_MISC
- https://docs.varnish-software.com/security/VSV00008/ x_refsource_MISC
- [debian-lts-announce] 20220214 [SECURITY] [DLA 2920-1] varnish security update mailing-list, x_refsource_MLIST
- FEDORA-2022-2f14ec7663 vendor-advisory, x_refsource_FEDORA
- DSA-5088 vendor-advisory, x_refsource_DEBIAN