Squirrelmail: Session hijacking vulnerability

2008.09.23
Credit: Hanno B
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-310


CVSS Base Score: 5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: None
Availability impact: None

Squirrelmail: Session hijacking vulnerability, CVE-2008-3663 References http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3663 http://int21.de/cve/CVE-2008-3663-squirrelmail.html http://enablesecurity.com/2008/08/11/surf-jack-https-will-not-save-you/ https://www.defcon.org/html/defcon-16/dc-16-speakers.html#Perry Description When configuring a web application to use only ssl (e. g. by forwarding all http-requests to https), a user would expect that sniffing and hijacking the session is impossible. Though, for this to be secure, one needs to set the session cookie to have the secure flag. Else the cookie will be transferred through http if the victim's browser does a single http-request on the same domain. Squirrelmail does not set that flag. It is fixed in the 1.5 test versions, but current 1.4.15 is vulnerable. Disclosure Timeline 2008-08-12: Vendor contacted 2008-09-23 Published advisory Credits and copyright This vulnerability was discovered by Hanno Boeck of schokokeks.org webhosting. It's licensed under the creative commons attribution license. Hanno Boeck, http://www.hboeck.de

References:

http://www.securityfocus.com/bid/31321
http://www.securityfocus.com/archive/1/archive/1/496601/100/0/threaded
http://int21.de/cve/CVE-2008-3663-squirrelmail.html


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