Vulnerability Monitor

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CVE-2008-1618

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.

Published

2008-04-07T18:44:00.000

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 5.0 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:N/A:N

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-200

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	watchguard	firebox_pptp_vpn	4.9	Yes
Application	watchguard	firebox_pptp_vpn	5.0	Yes

References

http://secunia.com/advisories/29708 Vendor Advisory ([email protected])
http://www.mwrinfosecurity.com/publications/mwri_watchguard-firebox-pptp-vpn-user-enumeration-advisory_2008-04-04.pdf Exploit, Patch ([email protected])
http://www.osvdb.org/44218 ([email protected])
http://www.securityfocus.com/bid/28619 ([email protected])
http://www.securitytracker.com/id?1019796 ([email protected])
http://www.vupen.com/english/advisories/2008/1152/references Vendor Advisory ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/41683 ([email protected])
http://secunia.com/advisories/29708 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.mwrinfosecurity.com/publications/mwri_watchguard-firebox-pptp-vpn-user-enumeration-advisory_2008-04-04.pdf Exploit, Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.osvdb.org/44218 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/28619 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id?1019796 (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2008/1152/references Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/41683 (af854a3a-2127-422b-91ae-364da2661108)