What’s Vulnerable › Vulnerabilities

CVE-2018-6196

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-01-25 · updated 2026-06-17
• Weakness: CWE-835

Description

w3m through 0.5.3 is prone to an infinite recursion flaw in HTMLlineproc0 because the feed_table_block_tag function in table.c does not prevent a negative indent value.

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
• https://github.com/tats/w3m/commit/8354763b90490d4105695df52674d0fcef823e92
• https://github.com/tats/w3m/issues/88
• https://lists.debian.org/debian-lts-announce/2020/04/msg00025.html
• https://usn.ubuntu.com/3555-1/
• https://usn.ubuntu.com/3555-2/
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00028.html
• https://github.com/tats/w3m/commit/8354763b90490d4105695df52674d0fcef823e92
• https://github.com/tats/w3m/issues/88
• https://lists.debian.org/debian-lts-announce/2020/04/msg00025.html
• https://usn.ubuntu.com/3555-1/
• https://usn.ubuntu.com/3555-2/

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