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CVE-2019-20637

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.

Risk Information

Base Score
7.5
MODERATE
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS Score
Exploitation Probability
0.478

Associated Vulnerability

VulnerabilityOS Platform
(RHSA-2020:4756) varnish:6 security, bug fix, and enhancement update varnish-6.0.6-2.module+el8.3.0+6843+b3b42fcc.x86_64.rpmLinux
(RHSA-2020:4756) varnish:6 security, bug fix, and enhancement update varnish-devel-6.0.6-2.module+el8.3.0+6843+b3b42fcc.x86_64.rpmLinux
(RHSA-2020:4756) varnish:6 security, bug fix, and enhancement update varnish-docs-6.0.6-2.module+el8.3.0+6843+b3b42fcc.x86_64.rpmLinux
(RHSA-2020:4756) varnish:6 security, bug fix, and enhancement update varnish-modules-0.15.0-5.module+el8.3.0+6843+b3b42fcc.x86_64.rpmLinux
(RHSA-2020:4756) varnish:6 security, bug fix, and enhancement update varnish-modules-debugsource-0.15.0-5.module+el8.3.0+6843+b3b42fcc.x86_64.rpmLinux
state of the art, high-performance web accelerator (USN-5474-1) varnish_5.2.1-1ubuntu0.1_i386.debLinux
state of the art, high-performance web accelerator (USN-5474-1) varnish_5.2.1-1ubuntu0.1_amd64.debLinux
state of the art, high-performance web accelerator (USN-5474-1) varnish_6.2.1-2ubuntu0.2_amd64.debLinux
state of the art, high-performance web accelerator (USN-5474-1) varnish_6.5.2-1ubuntu0.2_amd64.debLinux
state of the art, high-performance web accelerator (USN-5474-1) varnish_6.6.1-1ubuntu0.2_amd64.debLinux
state of the art, high-performance web accelerator (USN-5474-1) libvarnishapi1_5.2.1-1ubuntu0.1_i386.debLinux
state of the art, high-performance web accelerator (USN-5474-1) libvarnishapi1_5.2.1-1ubuntu0.1_amd64.debLinux
state of the art, high-performance web accelerator (USN-5474-1) libvarnishapi2_6.2.1-2ubuntu0.2_amd64.debLinux
state of the art, high-performance web accelerator (USN-5474-1) libvarnishapi2_6.5.2-1ubuntu0.2_amd64.debLinux
state of the art, high-performance web accelerator (USN-5474-1) libvarnishapi2_6.6.1-1ubuntu0.2_amd64.debLinux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234