NOTE: this issue has been disputed by the upstream vendor. nasl/nasl_crypto2.c in the Nessus Attack Scripting Language library (aka libnasl) 2.2.11 does not properly check the return value from the OpenSSL DSA_do_verify function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077. NOTE: the upstream vendor has disputed this issue, stating while we do misuse this function (this is a bug), it has absolutely no security ramification.
Weakness
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Libnasl | Finkproject | 2.2.11 (including) | 2.2.11 (including) |
| Libnasl | Ubuntu | dapper | * |
| Libnasl | Ubuntu | devel | * |
| Libnasl | Ubuntu | gutsy | * |
| Libnasl | Ubuntu | hardy | * |
| Libnasl | Ubuntu | intrepid | * |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/114.html
- https://cwe.mitre.org/data/definitions/115.html
- https://cwe.mitre.org/data/definitions/151.html
- https://cwe.mitre.org/data/definitions/194.html
- https://cwe.mitre.org/data/definitions/22.html
- https://cwe.mitre.org/data/definitions/57.html
- https://cwe.mitre.org/data/definitions/593.html
- https://cwe.mitre.org/data/definitions/633.html
- https://cwe.mitre.org/data/definitions/650.html
- https://cwe.mitre.org/data/definitions/94.html
References
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=511517
- http://cvs.fedoraproject.org/viewvc/rpms/libnasl/F-10/libnasl.spec?r1=1.16\u0026r2=1.17
- http://lists.opensuse.org/opensuse-security-announce/2009-02/msg00000.html
- http://openwall.com/lists/oss-security/2009/01/12/4
- http://www.attrition.org/pipermail/vim/2009-January/002133.html
- https://bugzilla.redhat.com/show_bug.cgi?id=479655
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=511517
- http://cvs.fedoraproject.org/viewvc/rpms/libnasl/F-10/libnasl.spec?r1=1.16\u0026r2=1.17
- http://lists.opensuse.org/opensuse-security-announce/2009-02/msg00000.html
- http://openwall.com/lists/oss-security/2009/01/12/4
- http://www.attrition.org/pipermail/vim/2009-January/002133.html
- https://bugzilla.redhat.com/show_bug.cgi?id=479655