Home / vulnerabilities Secunia Security Advisory 44347
Posted on 05 May 2011
Source : packetstormsecurity.org Link
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TITLE:
Portable OpenSSH "ssh-keysign" File Descriptor Leak Security Issue
SECUNIA ADVISORY ID:
SA44347
VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/44347/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=44347
RELEASE DATE:
2011-05-04
DISCUSS ADVISORY:
http://secunia.com/advisories/44347/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA:
* Last Update
* Popularity
* Comments
* Criticality Level
* Impact
* Where
* Solution Status
* Operating System / Software
* CVE Reference(s)
http://secunia.com/advisories/44347/
ONLY AVAILABLE IN CUSTOMER AREA:
* Authentication Level
* Report Reliability
* Secunia PoC
* Secunia Analysis
* Systems Affected
* Approve Distribution
* Remediation Status
* Secunia CVSS Score
* CVSS
https://ca.secunia.com/?page=viewadvisory&vuln_id=44347
ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
* AUTOMATED SCANNING
http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/
DESCRIPTION:
A security issue has been reported in Portable OpenSSH, which can be
exploited by malicious, local users to disclose sensitive
information.
The security issue is caused due to "ssh-keysign" leaking file
descriptors when executing the "ssh-rand-helper" utility, which can
be exploited to disclose private keys.
Successful exploitation requires that the system does not provide a
built-in source for randomness (e.g. "/dev/random").
Note: Reportedly, Mac OS X, Cygwin, Linux, and BSD-based platforms
are not affected.
SOLUTION:
Update to Portable OpenSSH 5.8p2 or apply patch.
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
PROVIDED AND/OR DISCOVERED BY:
The vendor credits Tomas Mraz.
ORIGINAL ADVISORY:
http://www.openssh.com/txt/portable-keysign-rand-helper.adv
OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
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About:
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