Libnids TCP Packet Reassembly Memory Corruption Vulnerability

BID:8905

Info

Libnids TCP Packet Reassembly Memory Corruption Vulnerability

Bugtraq ID: 8905
Class: Boundary Condition Error
CVE: CVE-2003-0850
Remote: Yes
Local: No
Published: Oct 15 2003 12:00AM
Updated: Jul 11 2009 11:56PM
Credit: The discovery of this issue has been credited to Robert Watson <[email protected]>.
Vulnerable: Rafal Wojtczuk Libnids 1.17
Rafal Wojtczuk Libnids 1.16
Rafal Wojtczuk Libnids 1.14
Rafal Wojtczuk Libnids 1.13
Rafal Wojtczuk Libnids 1.12
Rafal Wojtczuk Libnids 1.11
Dug Song dsniff 2.3
Not Vulnerable: Rafal Wojtczuk Libnids 1.18

Discussion

Libnids TCP Packet Reassembly Memory Corruption Vulnerability

A vulnerability has been discovered in Libnids that could result in memory corruption. The problem is said to occur while handling TCP packets of excessive size. As a result of this condition, it is believed that an attacker could potentially execute arbitrary code within the context of a program implementing the use of the Libnids TCP packet reassembly functionality.

Exploit / POC

Libnids TCP Packet Reassembly Memory Corruption Vulnerability

Currently we are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] &lt;mailto:[email protected]&gt;.

Solution / Fix

Libnids TCP Packet Reassembly Memory Corruption Vulnerability

Solution:
Libnids 1.18 has been released and addresses this issue. Users are advised to upgrade as soon as possible. It should be noted that applications that were statically linked to a vulnerable version of Libnids will not be fixed by this upgrade. The application will have to be re-linked to an invulnerable version of the library.

Gentoo has released an advisory (200311-07) to address this issue, Gentoo have advised that all Gentoo Linux users who are running 'net-libs/libnids' to update their systems using the following commands:

emerge sync
emerge '>=net-libs/libnids-1.18'
emerge clean

Conectiva has released a security advisory (CLA-2003:773) containing fixes to address this issue.

Debian has released an advisory (DSA 410-1) to address this issue. Please see the attached advisory for details on obtaining and applying fixes.


Rafal Wojtczuk Libnids 1.11

Rafal Wojtczuk Libnids 1.12

Rafal Wojtczuk Libnids 1.13

Rafal Wojtczuk Libnids 1.14

Rafal Wojtczuk Libnids 1.16

Rafal Wojtczuk Libnids 1.17

Dug Song dsniff 2.3

References

Libnids TCP Packet Reassembly Memory Corruption Vulnerability

References:

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