The SILC_SERVER_CMD_FUNC function in apps/silcd/command.c in silc-server 1.0.2 allows remote attackers to cause a denial of service (NULL dereference and daemon crash) via a request without a cipher algorithm and an invalid HMAC algorithm.
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Silc-server | Silc | 1.0.2 (including) | 1.0.2 (including) |
Potential Mitigations
References
- http://marc.info/?l=full-disclosure\u0026m=117320823618036\u0026w=2
- http://osvdb.org/33887
- http://secunia.com/advisories/24426
- http://secunia.com/advisories/24431
- http://security.gentoo.org/glsa/glsa-200703-12.xml
- http://www.securityfocus.com/bid/22846
- https://exchange.xforce.ibmcloud.com/vulnerabilities/32846
- http://marc.info/?l=full-disclosure\u0026m=117320823618036\u0026w=2
- http://osvdb.org/33887
- http://secunia.com/advisories/24426
- http://secunia.com/advisories/24431
- http://security.gentoo.org/glsa/glsa-200703-12.xml
- http://www.securityfocus.com/bid/22846
- https://exchange.xforce.ibmcloud.com/vulnerabilities/32846