Secunia Security Advisory - Danny Fullerton has reported a vulnerability in Dropbear SSH Server, which can be exploited by malicious users to gain escalated privileges.
475e24c29964075692e761a8861ce2274f22eb05fcee72a09cefce860554a545
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TITLE:
Dropbear SSH Server Use-After-Free Vulnerability
SECUNIA ADVISORY ID:
SA48147
VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/48147/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=48147
RELEASE DATE:
2012-02-27
DISCUSS ADVISORY:
http://secunia.com/advisories/48147/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA:
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* Criticality Level
* Impact
* Where
* Solution Status
* Operating System / Software
* CVE Reference(s)
http://secunia.com/advisories/48147/
ONLY AVAILABLE IN CUSTOMER AREA:
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https://ca.secunia.com/?page=viewadvisory&vuln_id=48147
ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
* AUTOMATED SCANNING
http://secunia.com/vulnerability_scanning/personal/
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DESCRIPTION:
Danny Fullerton has reported a vulnerability in Dropbear SSH Server,
which can be exploited by malicious users to gain escalated
privileges.
The vulnerability is caused due to a use-after-free error within the
daemon when managing certain channels concurrency and can be
exploited by sending multiple command requests.
Successful exploitation may allow execution of arbitrary code with
root privileges, but requires the server to be configured for public
key authentication and the "command" option to be used within the
"authorized_keys" file.
The vulnerability is reported in version 0.52 through 2011.54.
SOLUTION:
Update to version 2012.55
PROVIDED AND/OR DISCOVERED BY:
Danny Fullerton, Mantor Organization
ORIGINAL ADVISORY:
Dropbear:
http://matt.ucc.asn.au/dropbear/CHANGES
Danny Fullerton:
http://archives.neohapsis.com/archives/fulldisclosure/2012-02/0404.html
OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
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