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>> Cisco Unity Security Bypass and Denial of Service Vulnerabilities

Title : Cisco Unity Security Bypass and Denial of Service Vulnerabilities
VUPEN ID : VUPEN/ADV-2008-2771
CVE ID : CVE-2008-3814 - CVE-2008-4542 - CVE-2008-4543 - CVE-2008-4544 - CVE-2008-4545
CWE ID : CWE-20 - CWE-79 - CWE-200 - CWE-264 - CWE-400
Rated as : Moderate Risk 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2008-10-09


Technical Description    Receive VUPEN Security alerts in a Text format  Receive VUPEN Security alerts in a PDF format  Receive VUPEN Security alerts in an XML format 

Multiple vulnerabilities have been identified in Cisco Unity, which could be exploited to bypass security restrictions, or conduct cross site scripting and denial of service attacks.

The first issue is caused by an error in the authentication mechanism, which could allow attackers to bypass authentication and view or modify system configuration parameters.

The second vulnerability is caused by an error when displaying stored data, which could be exploited by malicious administrators to cause arbitrary scripting code to be executed by the user's browser in the security context of an affected site.

The third issue is caused due to insecure permissions being set on the "D:\CommServer\Reports" directory, which could allow attackers to gain knowledge of sensitive information.

The fourth vulnerability is caused by errors when processing malformed packets, which could allow attackers to cause a denial of service.

The fifth issue is the result of a processing error in an unspecified Microsoft API used by Cisco Unity.

Affected Products

Cisco Unity versions 4.x
Cisco Unity versions 5.x
Cisco Unity versions 7.x

Solution

Upgrade to Cisco Unity version 4.2(1)ES162, 5.0(1)ES56 or 7.0(2)ES8 :
http://tools.cisco.com/support/downloads/go/Redirect.x?mdfid=274246502

The vulnerability related to Microsoft API will be fixed in an upcoming Microsoft Windows update.

References

http://www.vupen.com/english/advisories/2008/2771
http://www.cisco.com/warp/public/707/cisco-sr-20081008-unity.shtml
http://www.cisco.com/warp/public/707/cisco-sa-20081008-unity.shtml
http://www.voipshield.com/research-details.php?id=130
http://www.voipshield.com/research-details.php?id=129
http://www.voipshield.com/research-details.php?id=128
http://www.voipshield.com/research-details.php?id=127
http://www.voipshield.com/research-details.php?id=126

Credits

Vulnerabilities reported by VoIPshield.

ChangeLog

2008-10-09 : Initial release

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