Security restrictions bypass in w3m - CVE-2018-6198
Published: February 5, 2018
Vulnerability identifier: #VU10375
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2018-6198
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists due to improper handling of temporary files when the ~/.w3m directory is unwritable. A local attacker can craft a symlink attack to bypass security restrictions and overwrite arbitrary files.
The weakness exists due to improper handling of temporary files when the ~/.w3m directory is unwritable. A local attacker can craft a symlink attack to bypass security restrictions and overwrite arbitrary files.
Affected software
w3m
Fedora
Ubuntu
Opensuse
w3m
Fedora
Ubuntu
Opensuse
w3m
How to mitigate CVE-2018-6198
Install update from vendor's website.
w3m - addressed in versions 0.5.3-36.git20180125.el7, 0.5.3-36.git20180125.fc27