vsftpd '__tzfile_read()' Function Heap Based Buffer Overflow Vulnerability

Bugtraq ID:	51013
Class:	Boundary Condition Error
CVE:
Remote:	Yes
Local:	No
Published:	Dec 10 2011 12:00AM
Updated:	Dec 10 2011 12:00AM
Credit:	Kingcope
Vulnerable:	Vsftpd Vsftpd 2.3.4
Not Vulnerable:

vsftpd '__tzfile_read()' Function Heap Based Buffer Overflow Vulnerability

vsftpd is prone to a buffer-overflow vulnerability because it fails to perform adequate boundary checks on user-supplied data.

Attackers may leverage this issue to execute arbitrary code in the context of the application. Failed attacks will cause denial-of-service conditions.

vsftpd 2.3.4 is affected; other versions may also be vulnerable.

vsftpd '__tzfile_read()' Function Heap Based 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]

vsftpd '__tzfile_read()' Function Heap Based 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].

vsftpd '__tzfile_read()' Function Heap Based Buffer Overflow Vulnerability

References:

• glibc timezone integer overflow (Dividead�??s Blog)
  
• Vsftpd Homepage (Vsftpd)