CVE-2019-20637
medium
CVSS v3
—
CVSS v2
—
VIR risk
5.5
Description
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2019-20637
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2020:4756
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rocky | 8 | fixed | |
| debian | bookworm | fixed | 6.4.0-1 |
| debian | bullseye | fixed | 6.4.0-1 |
| debian | forky | fixed | 6.4.0-1 |
| debian | sid | fixed | 6.4.0-1 |
| debian | trixie | fixed | 6.4.0-1 |
References
Verify integrity in audit chain (admin only). AS-IS.