Syslserve 1.058 Denial of Service Vulnerability
[--Vulnerability Summary--]
Title: Syslserve 1.058 Denial of Service Vulnerability
Product: Syslserve 1.058
Discovered: December 1, 2008
Discovered by: Rob Kraus, princeofnigeria (PoN)
Vendor: Syslserve
Vendor URL: http://www.syslserve.com/
Vendor notification date: December 2, 2008
Vendor response date: December 4, 2008
Vendor acknowledgment: December 5, 2008
Vendor provided fix: Upgrade to version 1.0.6 fixes the issue
Release coordinated with the vendor: --
Public disclosure date: January 15, 2009
Affects: Syslserve 1.058 and several earlier versions
Fixed in: Version 1.0.6
Risk: High
Vulnerability Description: Syslserve 1.058 is vulnerable to a remote
denial-of-service vulnerability because it fails to handle user-supplied input.
Sending a specially crafted UDP Syslog request will cause the application to
become unstable and stop responding.
Impact: A remote or local attacker can exploit this flaw by sending a specially
crafted packet to the Syslog server. Successful exploitation of this flaw will
cause the Syslog server process to crash preventing valid users or devices from
using the service. The Syslog server will need to be restarted to resume normal
Syslog server operations.
Keywords: security, vulnerability, syslog, princeofnigeria, windows, server,
udp, dos, denial of service
[--Background--]
Type of vulnerability: Input validation flaw
Who can exploit it: Local or Remote users
Syslserve 1.058 is an application that provides services for receiving system
event messages to provide a centralized reporting interface for distributed
system events. The application should validate and sanitize all user input to
prevent unexpected conditions.
Vulnerability Scope: The default installation of Syslserve 1.058 will allow
exploitation of this vulnerability.
[--More Details--]
Exploitation of this flaw can be executed by sending a specially crafted UDP to
the target server. No exploit code is required.
[--Fix or Workaround Information--]
Patch availability: Update to version 1.0.6 fixes the issue
Vendor provided fix: 12/5/2008
Workarounds: None required, update to 1.0.6
[--Disclosure Policy--]
PrinceofNigeria.org Vulnerability Disclosure Policy
http://www.princeofnigeria.org/blogs/index.php/vulndev/vulnreleasepolicy/?blog=1
[--Disclosure History--]
Public disclosure date: January 15, 2009
[--References--]
CVE-ID:
Bugtraq ID:
Secunia ID:
OSVDB ID:
[--Author--]
Rob Kraus, princeofnigeria (PoN)
Website: www.princeofnigeria.org/blogs