Argument injection attack in Xdg-Utils - CVE-2017-18266
Published: May 16, 2018
Vulnerability identifier: #VU12746
CSH Severity: Low
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-18266
CWE-ID: CWE-88
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote unauthenticated attacker to conduct argument injection attack on the target system.
The weakness exists in the open_envvar function in the xdg-open component due to improper validation of user-supplied input. A remote attacker can trick the victim into following a specially crafted link that is designed to modify the BROWSER environment variable, conduct argument-injection attack, redirect the user's browser traffic to an attacker-controlled site and execute arbitrary commands.
The weakness exists in the open_envvar function in the xdg-open component due to improper validation of user-supplied input. A remote attacker can trick the victim into following a specially crafted link that is designed to modify the BROWSER environment variable, conduct argument-injection attack, redirect the user's browser traffic to an attacker-controlled site and execute arbitrary commands.
Affected software
Xdg-Utils
Debian Linux
Fedora
openSUSE Leap
xdg-utils
Debian Linux
Fedora
openSUSE Leap
xdg-utils
How to mitigate CVE-2017-18266
Update to version 1.1.3.
xdg-utils - addressed in versions 1.1.3-1.fc26, 1.1.3-1.fc27, 1.1.3-1.fc28