Information Exposure Affecting varnish-cache package, versions [6.0.0,6.0.5)[6.1.0,6.2.2)[6.3.0,6.3.1)


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.15% (53rd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-UNMANAGED-VARNISHCACHE-2370243
  • published26 Jan 2022
  • disclosed8 Apr 2020
  • creditUnknown

Introduced: 8 Apr 2020

CVE-2019-20637  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade varnish-cache to version 6.0.5, 6.2.2, 6.3.1 or higher.

Overview

Affected versions of this package are vulnerable to Information Exposure. 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

CVSS Scores

version 3.1