OpenSSH 'pam_thread()' Remote Buffer Overflow Vulnerability

Bugtraq ID:	48507
Class:	Boundary Condition Error
CVE:
Remote:	Yes
Local:	No
Published:	Jun 30 2011 12:00AM
Updated:	Jul 04 2011 10:30AM
Credit:	Kingcope
Vulnerable:	OpenSSH OpenSSH 3.5 p1 + Conectiva Linux 9.0 + OpenPKG OpenPKG 1.2 + RedHat Linux 9.0 i386 + S.u.S.E. Linux Personal 8.2 + Terra Soft Solutions Yellow Dog Linux 3.0
Not Vulnerable:

OpenSSH 'pam_thread()' Remote Buffer Overflow Vulnerability

OpenSSH is prone to a buffer-overflow vulnerability because the library fails to properly bounds check user-supplied input before copying it to an insufficiently sized memory buffer.

Successfully exploiting this issue may allow attackers to execute arbitrary code in the context of the application.

OpenSSH 3.5p1 running on FreeBSD 4.9 and 4.11 is vulnerable; other versions may also be affected.

OpenSSH 'pam_thread()' Remote Buffer Overflow Vulnerability

The following exploit codes are available:

• /data/vulnerabilities/exploits/48507-3.5p1.txt
• /data/vulnerabilities/exploits/48507-3.4p1.txt

OpenSSH 'pam_thread()' Remote Buffer Overflow Vulnerability

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

OpenSSH 'pam_thread()' Remote Buffer Overflow Vulnerability

References:

• OpenSSH 3.5p1 Remote Root Exploit for FreeBSD (Kingcope)
  
• OpenSSH Homepage (OpenSSH)