The passwordCheck function in SAP Router 721 patch 117, 720...

Vulnerability Description

The passwordCheck function in SAP Router 721 patch 117, 720 patch 411, 710 patch 029, and earlier terminates validation of a Route Permission Table entry password upon encountering the first incorrect character, which allows remote attackers to obtain passwords via a brute-force attack that relies on timing differences in responses to incorrect password guesses, aka a timing side-channel attack.

References

• https://service.sap.com/sap/support/notes/1986895
• http://www.coresecurity.com/advisories/sap-router-password-timing-attack
• http://www.securityfocus.com/archive/1/531854/100/0/threaded
• http://www.exploit-db.com/exploits/32919
• http://scn.sap.com/docs/DOC-8218