CVE-2008-1618

Impact

The PPTP VPN service in Watchguard Firebox before 10, when performing the MS-CHAPv2 authentication handshake, generates different error codes depending on whether the username is valid or invalid, which allows remote attackers to enumerate valid usernames.

Affected products

Weakness classification

References

• NVD record
• CVE.org record
• http://secunia.com/advisories/29708
• http://www.mwrinfosecurity.com/publications/mwri_watchguard-firebox-pptp-vpn-user-enumeration-advisory_2008-04-04.pdf
• http://www.osvdb.org/44218
• http://www.securityfocus.com/bid/28619
• http://www.securitytracker.com/id?1019796
• http://www.vupen.com/english/advisories/2008/1152/references
• https://exchange.xforce.ibmcloud.com/vulnerabilities/41683
• http://secunia.com/advisories/29708
• http://www.mwrinfosecurity.com/publications/mwri_watchguard-firebox-pptp-vpn-user-enumeration-advisory_2008-04-04.pdf
• http://www.osvdb.org/44218
• http://www.securityfocus.com/bid/28619
• http://www.securitytracker.com/id?1019796
• http://www.vupen.com/english/advisories/2008/1152/references
• https://exchange.xforce.ibmcloud.com/vulnerabilities/41683