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>> OpenSSH Multiple Denial of Service and Information Disclosure Vulnerabilities

Title : OpenSSH Multiple Denial of Service and Information Disclosure Vulnerabilities
VUPEN ID : VUPEN/ADV-2006-3777
CVE ID : CVE-2006-4924 - CVE-2006-4925 - CVE-2006-5051 - CVE-2006-5052
Rated as : Moderate Risk 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2006-09-26

Advisory Details

 
  Description
  Affected Products
  Solution
  References
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  Receive VUPEN Security notifications by SMS 

Multiple vulnerabilities have been identified in OpenSSH, which could be exploited by remote attackers to cause a denial of service, disclose sensitive information, or potentially execute arbitrary commands.

The first flaw is due to an error in the CRC compensation attack detection algorithm when processing packets with multiple identical blocks, which could be exploited by attackers to exhaust all available resources via a specially crafted SSH packet, creating a denial of service condition [...]

Affected Products

OpenSSH version 4.3 and prior

Credits

Vulnerabilities reported by Tavis Ormandy (Google Security Team) and Mark Dowd.

ChangeLog

2006-09-26 : Initial release
2006-09-27 : Updated Advisory

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