VDB
CVE-2019-20637
CVE-2019-20637
PUBLISHED
CVSS 7.5 HIGH
An issue was discovered in Varnish Cache before 6.0.5 LTS, 6.1.x and 6.2.x before 6.2.2, and 6.3.x before 6.3.1. It does not clear a pointer between the handling of one client request and the next request within the same connection. This sometimes causes information to be disclosed from the connection workspace, such as data structures associated with previous requests within this connection or VCL-related temporary headers.
EPSS 1.79% · 78.2th percentile
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS Score
1.79%
78.2th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:18.04:LTS | varnish | 0, 5.2.1-1, 5.0.0-7.1 |
| Ubuntu:20.04:LTS | varnish | 6.2.1-2, 0, 6.1.1-1 |
Timeline
- Apr 8, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 25, 2021 EPSS Score
- Dec 30, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Mar 3, 2022 EPSS Score
- May 5, 2022 EPSS Score
- Jul 7, 2022 EPSS Score
- Sep 9, 2022 EPSS Score
- Nov 11, 2022 EPSS Score
References
- http://varnish-cache.org/security/VSV00004.html#vsv00004 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2019-20637 third-party-advisory
- https://ubuntu.com/security/CVE-2019-20637 advisory
- https://github.com/varnishcache/varnish-cache/commit/bd7b3d6d47ccbb5e1747126f8e2a297f38e56b8c fix
- https://ubuntu.com/security/notices/USN-5474-1 advisory