Improper Link Resolution Before File Access ('Link Following')
CVE-2018-6198
Summary
w3m through 0.5.3 does not properly handle temporary files when the ~/.w3m directory is unwritable, which allows a local attacker to craft a symlink attack to overwrite arbitrary files.
- HIGH
- LOCAL
- HIGH
- UNCHANGED
- NONE
- LOW
- NONE
- NONE
CWE-59 - Improper Link Resolution Before File Access
'Improper link resolution before file access' occurs when software accesses a file resource but fails to verify that the file isn't a link or shortcut to another file. An attacker can potentially gain access to arbitrary files and from there the impact can vary, depending on the application, from sensitive data exposure to remote code execution.
References
Advisory Timeline
- Published