What’s Vulnerable › Vulnerabilities

CVE-2018-6198

• Severity: medium (CVSS 4.7 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-01-25 · updated 2026-06-17
• Weakness: CWE-59

Description

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.

Affected products

• Canonical Ubuntu Linux: 12.04, 14.04, 16.04, 17.10
• Tats W3M: through 0.5.3

References

• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00028.html
• http://www.securityfocus.com/bid/102855
• https://bugs.debian.org/888097
• https://github.com/tats/w3m/commit/18dcbadf2771cdb0c18509b14e4e73505b242753
• https://salsa.debian.org/debian/w3m/commit/18dcbadf2771cdb0c18509b14e4e73505b242753
• https://usn.ubuntu.com/3555-1/
• https://usn.ubuntu.com/3555-2/
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00028.html
• http://www.securityfocus.com/bid/102855
• https://bugs.debian.org/888097
• https://github.com/tats/w3m/commit/18dcbadf2771cdb0c18509b14e4e73505b242753
• https://salsa.debian.org/debian/w3m/commit/18dcbadf2771cdb0c18509b14e4e73505b242753

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