Technical Description

Multiple vulnerabilities have been identified in SonicWALL SSL-VPN, which could be exploited by attackers to cause a denial of service or take complete control of an affected system.

The first issue is caused by a design error in the WebCacheCleaner ActiveX control that does not restrict access to the "FileDelete()" method, which could be exploited by attackers to delete rbitrary files from a vulnerable system.

The second vulnerability is caused by buffer overflow errors in the NELaunchCtrl ActiveX control when processing malformed data passed to the "AddRouteEntry()" method or to the "serverAddress", "sessionId", "clientIPLower", "clientIPHigher", "userName", "domainName" and "dnsSuffix" properties, which could be exploited by remote attackers to execute arbitrary code by tricking a user into visiting a specially crafted web page.

Affected Products

SonicWALL SSL-VPN 200 versions prior to 2.1
SonicWALL SSL-VPN 2000 versions prior to 2.5
SonicWALL SSL-VPN 4000 versions prior to 2.5

Solution

Upgrade to SonicWALL SSL VPN 2000/4000 version 2.5 and SonicWALL SSL-VPN 200 version 2.1 :
http://www.sonicwall.com/us/643.htm

References

http://www.vupen.com/english/advisories/2007/3696
http://www.sec-consult.com/303.html
http://www.kb.cert.org/vuls/id/298521

Credits

Vulnerabilities reported by lofi42, SEC Consult and Will Dormann (CERT/CC).

ChangeLog

2007-11-02 : Initial release

Vulnerability Management

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