Upstream information

CVE-2019-20637 at MITRE


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.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 5
Vector AV:N/AC:L/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
CVSS v3 Scores
  National Vulnerability Database
Base Score 7.5
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact None
Availability Impact None
CVSSv3 Version 3.1
SUSE Bugzilla entry: 1169040 [RESOLVED / FIXED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Package Hub 15 SP1
  • libvarnishapi2 >= 6.2.1-bp151.4.6.1
  • varnish >= 6.2.1-bp151.4.6.1
  • varnish-devel >= 6.2.1-bp151.4.6.1
openSUSE Leap 15.1
  • libvarnishapi2 >= 6.2.1-lp151.3.6.1
  • varnish >= 6.2.1-lp151.3.6.1
  • varnish-devel >= 6.2.1-lp151.3.6.1

SUSE Timeline for this CVE

CVE page created: Thu Apr 9 09:10:59 2020
CVE page last modified: Wed Oct 26 22:14:07 2022