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TITLE:
FreeBSD libc chroot Library Loading Vulnerability

SECUNIA ADVISORY ID:
SA47022

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/47022/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=47022

RELEASE DATE:
2011-12-06

DISCUSS ADVISORY:
http://secunia.com/advisories/47022/#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/47022/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=47022

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
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http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
Kingcope has discovered a vulnerability in FreeBSD, which can be
exploited by malicious people to compromise a vulnerable system.

The vulnerability is caused due libc loading certain libraries
dynamically. In combination with e.g. a FTP service (e.g. FreeBSD's
ftpd) running in a chroot, this can be exploited to execute arbitrary
code by uploading malicious libraries and then triggering libc to load
them.

The vulnerability is confirmed in FreeBSD 8.1. Other versions may
also be affected.

SOLUTION:
Restrict access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Kingcope

ORIGINAL ADVISORY:
Kingcope:
http://archives.neohapsis.com/archives/fulldisclosure/2011-12/0038.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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