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Insecure Library Loading

Secunia Advisory SA9722

OpenBSD Semaphore Limit Integer Overflow

Secunia Advisory

SA9722

Get alerted and manage the vulnerability life cycle

Release Date

2003-09-13

Popularity

9,726 views

Comments

0 comments

Criticality level

Not critical

Impact

Privilege escalation

Where

Local system

Authentication level

Available in Customer Area

Report reliability

Available in Customer Area

Solution Status

Vendor Patch

Systems affected

Available in Customer Area

Approve distribution

Available in Customer Area

Operating System

OpenBSD 3.x

Secunia CVSS Score

Available in Customer Area

CVE Reference(s)

No CVE references.

Description

A vulnerability has been identified in OpenBSD allowing a malicious root user to escalate privileges.

The problem is that the "root" user may set the semaphore limit to a high value, which causes an integer overflow. This could be exploited to bypass the security level access control (securelevel) specified at boot time.

Solution
A patch is available for OpenBSD 3.3:
Further details available in Customer Area

Original Advisory
http://www.openbsd.org/errata.html#sysvsem

Deep Links
Links available in Customer Area

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: OpenBSD Semaphore Limit Integer Overflow

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Secunia Advisory SA9722

OpenBSD Semaphore Limit Integer Overflow

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