Overview
The CA ARCserve Backup authentication service, caauthd.exe, is susceptible to a denial-of-service vulnerability. CA ARCserve Backup r16 SP1 was reported to be vulnerable.
Description
The Offensive Security advisory states: By specifying an invalid field size for the encrypted username or password in a crafted RPC packet, the authentication service performs an invalid pointer dereference while trying to decrypt the character string. Authentication is not required to trigger the vulnerability and successful exploitation of this vulnerability for the caauthd.exe process will lead to a denial of service. |
Impact
An unauthenticated remote attacker may be able to trigger a denial-of-service condition. |
Solution
Apply a Patch
If you cannot patch for whatever reason please consider the following workarounds. |
Restrict access |
Vendor Information
CVSS Metrics
| Group | Score | Vector |
|---|---|---|
| Base | 7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C |
| Temporal | 6.1 | E:POC/RL:OF/RC:C |
| Environmental | 6.1 | CDP:ND/TD:ND/CR:ND/IR:ND/AR:ND |
References
Acknowledgements
Thanks to Matteo Memelli of Offensive Security for reporting this vulnerability.
This document was written by Jared Allar.
Other Information
| CVE IDs: | CVE-2012-2972 |
| Date Public: | 2012-08-31 |
| Date First Published: | 2012-10-30 |
| Date Last Updated: | 2012-10-30 20:05 UTC |
| Document Revision: | 23 |