Title: grsecurity Multiple RBAC Local Security Bypass Vulnerabilities
Severity: MODERATE
Description:
The 'grsecurity' application is an addon to the Linux kernel using multilayered detection, prevention, and containment.
The application is prone to multiple local security-bypass vulnerabilities because it fails to handle return values to certain functions in the RBAC (Role-Based Access Control) system. Specifically, the 'user_transition_allow' and 'user_transition_deny' rules can be bypassed with calls to the 'sys_setfsuid()' and 'sys_setfsgid()' functions.
Successful exploits will allow attackers to bypass certain security restrictions.
Versions prior to grsecurity 2.1.11-2.6.24.5 (2008-04-21) and 2.1.11-2.4.36.2 (2008-04-21) are affected.
Affected Products:
- grsecurity grsecurity Kernel Patch 2.1.1
References:
- Grsecurity: Grsecurity Homepage
- grsecurity: grsecurity Download Page
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