SB2014080102 - Permissions, Privileges, and Access Controls in Linux kernel
Published: August 1, 2014 Updated: August 10, 2020
Security Bulletin ID
SB2014080102
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2014-3534)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
arch/s390/kernel/ptrace.c in the Linux kernel before 3.15.8 on the s390 platform does not properly restrict address-space control operations in PTRACE_POKEUSR_AREA requests, which allows local users to obtain read and write access to kernel memory locations, and consequently gain privileges, via a crafted application that makes a ptrace system call.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=dab6cf55f81a6e16b8147aed9a843e1691dcd318
- http://secunia.com/advisories/59790
- http://secunia.com/advisories/60351
- http://www.debian.org/security/2014/dsa-2992
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.8
- http://www.osvdb.org/109546
- http://www.securityfocus.com/bid/68940
- http://www.securitytracker.com/id/1030683
- https://bugzilla.redhat.com/show_bug.cgi?id=1114089
- https://exchange.xforce.ibmcloud.com/vulnerabilities/95069
- https://github.com/torvalds/linux/commit/dab6cf55f81a6e16b8147aed9a843e1691dcd318