Cross-site scripting in ViewVC - CVE-2020-5283
Published: April 3, 2020
Vulnerability identifier: #VU26561
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2020-5283
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data in CVS repository in "show_subdir_lastmod" support. A remote authenticated attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
Affected software
ViewVC
Fedora
viewvc
Fedora
viewvc
How to mitigate CVE-2020-5283
Install update from vendor's website.
ViewVC - addressed in versions 1.1.28, 1.2.1
viewvc - addressed in versions 1.1.28-1.el6, 1.1.28-1.el7, 1.1.28-1.fc30
viewvc - addressed in versions 1.1.28-1.el6, 1.1.28-1.el7, 1.1.28-1.fc30