CVE-2008-1618: Infoleak
First published: Mon Apr 07 2008(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| WatchGuard Firebox | =4.9 | |
| WatchGuard Firebox | =5.0 |
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Reference Links
- http://www.mwrinfosecurity.com/publications/mwri_watchguard-firebox-pptp-vpn-user-enumeration-advisory_2008-04-04.pdf
- http://www.securityfocus.com/bid/28619
- http://www.securitytracker.com/id?1019796
- http://secunia.com/advisories/29708
- http://www.osvdb.org/44218
- http://www.vupen.com/english/advisories/2008/1152/references
- https://exchange.xforce.ibmcloud.com/vulnerabilities/41683
Frequently Asked Questions
What is the severity of CVE-2008-1618?
CVE-2008-1618 is classified as a medium severity vulnerability that allows remote attackers to perform username enumeration.
How do I fix CVE-2008-1618?
To mitigate CVE-2008-1618, it is recommended to upgrade Watchguard Firebox to the latest version or apply any available patches.
Which versions are affected by CVE-2008-1618?
CVE-2008-1618 affects Watchguard Firebox PPTP VPN versions prior to 10, specifically 4.9 and 5.0.
What type of attack does CVE-2008-1618 allow?
CVE-2008-1618 allows remote attackers to enumerate valid usernames through the MS-CHAPv2 authentication handshake error code responses.
Is there a workaround for CVE-2008-1618?
Disabling the PPTP VPN service on affected Watchguard Firebox devices can serve as a temporary workaround for CVE-2008-1618.
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- version/watchguard firebox/4.9
- version/watchguard firebox/5.0