Information Exposure The advisory has been revoked - it doesn't affect any version of package varnish-devel (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL8-VARNISHDEVEL-1459662
- published26 Jul 2021
- disclosed21 Oct 2019
Introduced: 21 Oct 2019
CVE-2019-20637 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:8.
NVD Description
Note: Versions mentioned in the description apply only to the upstream varnish-devel package and not the varnish-devel package as distributed by RHEL.
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.
References
- https://access.redhat.com/security/cve/CVE-2019-20637
- http://varnish-cache.org/security/VSV00004.html#vsv00004
- https://access.redhat.com/errata/RHSA-2020:4756
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00026.html
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00031.html