Vulnerabilities > CVE-2009-1527 - Race Condition vulnerability in Linux Kernel

047910
CVSS 6.9 - MEDIUM
Attack vector
LOCAL
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
local
linux
CWE-362
exploit available

Summary

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.

Vulnerable Configurations

Part Description Count
OS
Linux
992

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Leveraging Race Conditions
    This attack targets a race condition occurring when multiple processes access and manipulate the same resource concurrently and the outcome of the execution depends on the particular order in which the access takes place. The attacker can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance a race condition can occur while accessing a file, the attacker can trick the system by replacing the original file with his version and cause the system to read the malicious file.
  • Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
    This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. The typical example is the file access. The attacker can leverage a file access race condition by "running the race", meaning that he would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the attacker could do something such as replace the file and cause an escalation of privilege.

Exploit-Db

descriptionLinux Kernel 2.6.x ptrace_attach Local Privilege Escalation Exploit. CVE-2009-1527. Local exploit for linux platform
idEDB-ID:8673
last seen2016-02-01
modified2009-05-13
published2009-05-13
reporters0m3b0dy
sourcehttps://www.exploit-db.com/download/8673/
titleLinux Kernel 2.6.x - ptrace_attach Local Privilege Escalation Exploit

Statements

contributorTomas Hoger
lastmodified2009-05-06
organizationRed Hat
statementNot 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.