Link following in TrouSerS - CVE-2020-24332

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Main Vulnerability Database Vulnerabilities #VU66611

Link following in TrouSerS - CVE-2020-24332

Published: August 18, 2022


Vulnerability identifier: #VU66611
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-24332
CWE-ID: CWE-59
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to perform a denial of service attack.

The vulnerability exists due to creation of the system.data file is prone to symlink attacks if the tcsd daemon is started with root privileges. A local user can create or corrupt existing files, which could possibly lead to a DoS attack


Affected software

TrouSerS
Cloud Pak for Security (CP4S)
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for IBM z Systems
openEuler
Fedora
trousers
trousers-devel
trousers-debuginfo
trousers-help
trousers-debugsource
trousers (Red Hat package)

How to mitigate CVE-2020-24332

Install update from vendor's website.

TrouSerS - update to 0.3.14
Cloud Pak for Security (CP4S) - update to 1.8.0.0
trousers - update to 0.3.14-4.fc33
trousers - update to 0.3.14-5
trousers-devel - update to 0.3.14-5
trousers-debuginfo - update to 0.3.14-5
trousers-help - update to 0.3.14-5
trousers-debugsource - update to 0.3.14-5
trousers (Red Hat package) - update to 0.3.15-1.el8

External References

Related Security Bulletins