Input validation error in Rxvt - CVE-2021-33477

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Main Vulnerability Database Vulnerabilities #VU67654

Input validation error in Rxvt - CVE-2021-33477

Published: September 26, 2022


Vulnerability identifier: #VU67654
CSH Severity: Low
CVSS v4: 5.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-33477
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input when running an application inside the terminal window. A remote attacker can trick the victim to run a specially crafted program or open a specially crafted file and execute arbitrary code on the system.


Affected software

Rxvt
Gentoo Linux
Fedora
mrxvt
Eterm
rxvt-unicode
mrxvt
eterm
rxvt-unicode
x11-terms/rxvt-unicode

How to mitigate CVE-2021-33477

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

rxvt-unicode - update to 9.25
mrxvt - addressed in versions 0.5.3-31.fc33, 0.5.3-31.fc34
eterm - addressed in versions 0.9.6-26.fc32, 0.9.6-26.fc33, 0.9.6-26.fc34, 0.9.6-26.fc35
rxvt-unicode - addressed in versions 9.21-4.el7, 9.26-1.el8, 9.26-1.fc33, 9.26-1.fc34
x11-terms/rxvt-unicode - update to 9.22-r9

External References

Related Security Bulletins