GNU glibc 'fnmatch_loop.c' Local Buffer Overflow Vulnerability

BID:72789

Info

GNU glibc 'fnmatch_loop.c' Local Buffer Overflow Vulnerability

Bugtraq ID: 72789
Class: Boundary Condition Error
CVE: CVE-2015-8984
Remote: No
Local: Yes
Published: Feb 26 2015 12:00AM
Updated: Mar 29 2017 02:01AM
Credit: Kostya Serebryany
Vulnerable: Ubuntu Ubuntu Linux 12.04 LTS i386
Ubuntu Ubuntu Linux 12.04 LTS amd64
GNU glibc 2.21
Not Vulnerable: GNU glibc 2.22

Discussion

GNU glibc 'fnmatch_loop.c' Local Buffer Overflow Vulnerability

GNU glibc is prone to a local buffer-overflow vulnerability because it fails to properly bounds-check user-supplied data before copying it into an insufficiently sized buffer.

A local attacker can exploit this issue to crash the affected application, resulting in denial-of-service conditions. Due to the nature of this issue, arbitrary code execution may be possible but this has not been confirmed.

Note: This issue was previously titled 'GNU glibc 'fnmatch_loop.c' Remote Buffer Overflow Vulnerability'. The title have been changed to better document it.

Exploit / POC

GNU glibc 'fnmatch_loop.c' Local Buffer Overflow Vulnerability

Currently, we are not aware of any working exploits. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

Solution / Fix

GNU glibc 'fnmatch_loop.c' Local Buffer Overflow Vulnerability

Solution:
Updates are available. Please see the references or vendor advisory for more information.

References

GNU glibc 'fnmatch_loop.c' Local Buffer Overflow Vulnerability

References:

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