Vulnerability Description
An issue was discovered in Varnish Cache before 6.0.6 LTS, 6.1.x and 6.2.x before 6.2.3, and 6.3.x before 6.3.2. It occurs when communication with a TLS termination proxy uses PROXY version 2. There can be an assertion failure and daemon restart, which causes a performance loss.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Varnish-Cache | Varnish Cache | >= 6.1.0, < 6.2.3 |
| Varnish-Software | Varnish Cache | >= 6.0.0, < 6.0.6 |
| Opensuse | Backports Sle | 15.0 |
| Opensuse | Leap | 15.1 |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00026.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00031.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00036.htmlMailing ListThird Party Advisory
- https://varnish-cache.org/security/VSV00005.html#vsv00005Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00026.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00031.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00036.htmlMailing ListThird Party Advisory
- https://varnish-cache.org/security/VSV00005.html#vsv00005Vendor Advisory
FAQ
What is CVE-2020-11653?
CVE-2020-11653 is a vulnerability with a CVSS score of 7.5 (HIGH). An issue was discovered in Varnish Cache before 6.0.6 LTS, 6.1.x and 6.2.x before 6.2.3, and 6.3.x before 6.3.2. It occurs when communication with a TLS termination proxy uses PROXY version 2. There c...
How severe is CVE-2020-11653?
CVE-2020-11653 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-11653?
Check the references section above for vendor advisories and patch information. Affected products include: Varnish-Cache Varnish Cache, Varnish-Software Varnish Cache, Opensuse Backports Sle, Opensuse Leap, Debian Debian Linux.