CVE-2008-1618

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2008-04-07 · updated 2026-06-16
Weakness: CWE-200

Description

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

WatchGuard Firebox Pptp Vpn: 4.9, 5.0

References

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

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