Vulnerability CVE-2012-0920
Published: 2012-06-05   Modified: 2012-06-06

Description:
Use-after-free vulnerability in Dropbear SSH Server 0.52 through 2012.54, when command restriction and public key authentication are enabled, allows remote authenticated users to execute arbitrary code and bypass command restrictions via multiple crafted command requests, related to "channels concurrency."

Type:

CWE-399

 (Resource Management Errors)

CVSS2 => (AV:N/AC:H/Au:S/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.1/10
10/10
3.9/10
Exploit range
Attack complexity
Authentication
Remote
High
Single time
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Matt johnston -> Dropbear ssh server 
Debian -> Debian linux 

 References:
http://matt.ucc.asn.au/dropbear/CHANGES
http://www.debian.org/security/2012/dsa-2456
http://www.securityfocus.com/bid/52159
https://exchange.xforce.ibmcloud.com/vulnerabilities/73444
https://secure.ucc.asn.au/hg/dropbear/rev/818108bf7749
https://www.mantor.org/~northox/misc/CVE-2012-0920.html
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