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TITLE:
FreeBSD update for mountd

SECUNIA ADVISORY ID:
SA44307

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/44307/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=44307

RELEASE DATE:
2011-04-22

DISCUSS ADVISORY:
http://secunia.com/advisories/44307/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
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 * Criticality Level
 * Impact
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 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/44307/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=44307

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:
FreeBSD has issued an update for mountd. This fixes a security issue,
which can be exploited by malicious people to bypass certain security
restrictions.

The security issue is caused due to an error within the handling of
"-network" definitions using the CIDR notion with a certain prefix
length when parsing the exports table, which can result in an
incorrect network mask being used to enforce ACL restrictions.

Successful exploitation requires that a prefix length that is not a
multiple of 8 is used.

SOLUTION:
Update FreeBSD or apply patch.

Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Ruslan Ermilov.

ORIGINAL ADVISORY:
FreeBSD-SA-11:01.mountd:
http://security.freebsd.org/advisories/FreeBSD-SA-11:01.mountd.asc

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:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

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