An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. w3m allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted HTML page.
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| W3m | Tats | * | 0.5.3-30 (including) |
| W3m | Ubuntu | esm-apps/xenial | * |
| W3m | Ubuntu | esm-infra-legacy/trusty | * |
| W3m | Ubuntu | precise | * |
| W3m | Ubuntu | trusty | * |
| W3m | Ubuntu | trusty/esm | * |
| W3m | Ubuntu | upstream | * |
| W3m | Ubuntu | xenial | * |
| W3m | Ubuntu | yakkety | * |
Potential Mitigations
References
- http://www.openwall.com/lists/oss-security/2016/11/18/3
- http://www.securityfocus.com/bid/94407
- https://github.com/tats/w3m/blob/master/ChangeLog
- https://github.com/tats/w3m/issues/18
- https://security.gentoo.org/glsa/201701-08
- http://www.openwall.com/lists/oss-security/2016/11/18/3
- http://www.securityfocus.com/bid/94407
- https://github.com/tats/w3m/blob/master/ChangeLog
- https://github.com/tats/w3m/issues/18
- https://security.gentoo.org/glsa/201701-08