----------------------------------------------------------------------


Stay Compliant

Alerts, Technical Descriptions, PoC, Links to patches, CVSS, CVE, Changelogs, Alternative Remediation Strategies, and much more provided in the Secunia Vulnerability Intelligence solutions

Free Trial
http://secunia.com/products/corporate/evm/trial/


----------------------------------------------------------------------

TITLE:
OPIE "__opiereadrec()" Off-by-One Vulnerability

SECUNIA ADVISORY ID:
SA39966

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/39966/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=39966

RELEASE DATE:
2010-05-27

DISCUSS ADVISORY:
http://secunia.com/advisories/39966/#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/39966/

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=39966

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 vulnerability has been reported in OPIE, which can be exploited by
malicious people to cause a DoS (Denial of Service) and potentially
compromise a vulnerable system.

The vulnerability is caused due to an off-by-one error within the
"__opiereadrec()" function in readrec.c and can be exploited to write
a single NULL byte outside the bounds of a stack-based buffer.

Successful exploitation requires access to a running OPIE capable
service.

The vulnerability is reported in version 2.4. Other versions may also
be affected.

SOLUTION:
Restrict access to services using the library to trusted hosts only.

PROVIDED AND/OR DISCOVERED BY:
Maksymilian Arciemowicz and Adam Zabrocki.

ORIGINAL ADVISORY:
Maksymilian Arciemowicz:
http://securityreason.com/achievement_securityalert/87

Adam Zabrocki:
http://blog.pi3.com.pl/?p=111

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/

----------------------------------------------------------------------

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.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------