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TITLE:
FreeBSD pam_ssh Unencrypted Private Key Security Issue

SECUNIA ADVISORY ID:
SA47401

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/47401/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=47401

RELEASE DATE:
2011-12-26

DISCUSS ADVISORY:
http://secunia.com/advisories/47401/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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http://secunia.com/advisories/47401/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=47401

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DESCRIPTION:
A security issue has been reported in FreeBSD, which can be exploited
by malicious people to bypass certain security restrictions.

The security issue is caused due to the pam_ssh module not verifying
the passphrase when authenticating users with unencrypted SSH private
keys. This can be exploited to login to a user's account by providing
an arbitrary passphrase.

SOLUTION:
Update FreeBSD or apply the patch.

PROVIDED AND/OR DISCOVERED BY:
Guy Helmer, Dag-Erling Smorgrav in a bug report.

ORIGINAL ADVISORY:
FreeBSD-SA-11:09:
http://security.freebsd.org/advisories/FreeBSD-SA-11:09.pam_ssh.asc

Guy Helmer:
http://osdir.com/ml/freebsd-security/2011-11/msg00000.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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About:
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