National Cyber-Alert System
Vulnerability Summary for CVE-2009-1527
Original release date:05/05/2009
Last revised:06/09/2009
Source:
US-CERT/NIST
Overview
Race condition in the ptrace_attach function in kernel/ptrace.c in the Linux kernel before 2.6.30-rc4 allows local users to gain privileges via a PTRACE_ATTACH ptrace call during an exec system call that is launching a setuid application, related to locking an incorrect cred_exec_mutex object.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
10.0
Exploitability Subscore:
3.4
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type:Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service
- Official Statement from Red Hat (05/06/2009)
-
Not vulnerable. This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, 4, 5, or Red Hat Enterprise MRG.
References to Advisories, Solutions, and Tools
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External Source: VUPEN
Name: ADV-2009-1236
Type: Advisory; Patch Information
External Source: CONFIRM
Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=cad81bc2529ab8c62b6fdc83a1c0c7f4a87209eb
Type: Advisory; Patch Information
External Source: XF
Name: linux-kernel-ptraceattach-code-execution(50293)
External Source: BID
Name: 34799
External Source: BUGTRAQ
Name: 20090516 rPSA-2009-0084-1 kernel
External Source: OSVDB
Name: 54188
External Source: MLIST
Name: [oss-security] 20090504 CVE request: kernel: ptrace_attach: fix the usage of ->cred_exec_mutex
External Source: CONFIRM
Name: http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.30-rc4
Type: Advisory
External Source: CONFIRM
Name: http://wiki.rpath.com/Advisories:rPSA-2009-0084
External Source: SECUNIA
Name: 35120
External Source: SECUNIA
Name: 34977
Type: Advisory