libxml2 2.9.4, when used in recover mode, allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted XML document. NOTE: The maintainer states I would disagree of a CVE with the Recover parsing option which should only be used for manual recovery at least for XML parser.
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Libxml2 | Xmlsoft | 2.9.4 (including) | 2.9.4 (including) |
| Libxml2 | Ubuntu | artful | * |
| Libxml2 | Ubuntu | devel | * |
| Libxml2 | Ubuntu | esm-infra-legacy/trusty | * |
| Libxml2 | Ubuntu | esm-infra/xenial | * |
| Libxml2 | Ubuntu | precise | * |
| Libxml2 | Ubuntu | precise/esm | * |
| Libxml2 | Ubuntu | trusty | * |
| Libxml2 | Ubuntu | trusty/esm | * |
| Libxml2 | Ubuntu | upstream | * |
| Libxml2 | Ubuntu | vivid/stable-phone-overlay | * |
| Libxml2 | Ubuntu | xenial | * |
| Libxml2 | Ubuntu | yakkety | * |
| Libxml2 | Ubuntu | zesty | * |
Potential Mitigations
References
- http://www.openwall.com/lists/oss-security/2016/11/05/3
- http://www.openwall.com/lists/oss-security/2017/02/13/1
- http://www.securityfocus.com/bid/96188
- https://bugzilla.gnome.org/show_bug.cgi?id=778519
- https://lists.debian.org/debian-lts-announce/2022/04/msg00004.html
- https://security.gentoo.org/glsa/201711-01
- http://www.openwall.com/lists/oss-security/2016/11/05/3
- http://www.openwall.com/lists/oss-security/2017/02/13/1
- http://www.securityfocus.com/bid/96188
- https://bugzilla.gnome.org/show_bug.cgi?id=778519
- https://lists.debian.org/debian-lts-announce/2022/04/msg00004.html
- https://security.gentoo.org/glsa/201711-01