CVE-2018-6197 : w3m through 0.5.3 is prone to a NULL pointer dereference flaw in formUpdateBuffe

w3m through 0.5.3 is prone to a NULL pointer dereference flaw in formUpdateBuffer in form.c.

Published 2018-01-25 03:29:01

Updated 2023-12-29 18:38:05

Source MITRE

View at NVD, CVE.org

Vulnerability category: Memory Corruption

Products affected by CVE-2018-6197

Canonical » Ubuntu Linux » Version: 14.04 LTS Edition
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 12.04 ESM Edition
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 16.04 LTS Edition
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 17.10
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
Matching versions
Tats » W3M
Versions up to, including, (<=) 0.5.3
cpe:2.3:a:tats:w3m:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.68%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 77 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
7.5	HIGH	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

Assigned by: nvd@nist.gov (Primary)

https://github.com/tats/w3m/commit/7fdc83b0364005a0b5ed869230dd81752ba022e8

Prevent invalid columnPos() call in formUpdateBuffer() · tats/w3m@7fdc83b · GitHub
Patch;Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00028.html

[security-announce] openSUSE-SU-2019:1142-1: moderate: Security update f

CVEs referencing this url
https://usn.ubuntu.com/3555-1/

USN-3555-1: w3m vulnerabilities | Ubuntu security notices
Third Party Advisory

CVEs referencing this url
https://usn.ubuntu.com/3555-2/

USN-3555-2: w3m vulnerabilities | Ubuntu security notices
Third Party Advisory

CVEs referencing this url
https://lists.debian.org/debian-lts-announce/2020/04/msg00025.html

[SECURITY] [DLA 2195-1] w3m security update

CVEs referencing this url
http://www.securityfocus.com/bid/102846

w3m 'form.c' Null Pointer Dereference Denial of Service Vulnerability
Third Party Advisory;VDB Entry
https://github.com/tats/w3m/issues/89

segv in columnPos · Issue #89 · tats/w3m · GitHub
Exploit;Patch;Third Party Advisory

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