Secunia Security Advisory - Kingcope has discovered a vulnerability in FreeBSD, which can be exploited by malicious people to compromise a vulnerable system.
da0f55379af90a62d1150a575c4a0b80b25cd3fa31cc818ee55df7883dab396a
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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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http://secunia.com/advisories/47022/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=47022
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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:
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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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