BadBlue uninst.exe DoS

Risk: Low
Local: No
Remote: Yes
CWE: CWE-264

CVSS Base Score: 7.5/10
Impact Subscore: 6.4/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

Title ----- DDIVRT-2008-11 BadBlue uninst.exe DoS Severity -------- Medium Date Discovered --------------- March 5th 2008 Discovered By ------------- Digital Defense, Inc. Vulnerability Research Team Credit: Steven James and r@b13$ Vulnerability Description ------------------------- BadBlue is a web server used for peer-to-peer file sharing. By default, several executable files are stored in the web root: badblue.exe, uninst.exe, and dyndns.exe. Executable files stored in the web root of BadBlue can be launched remotely by any user. This can be leveraged to create a DoS condition by repeatedly invoking the uninst.exe executable. Due to the fact that BadBlue has not released a patch for the previously documented directory traversal vulnerability (CVE 2007-6378), an attacker may utilize these two flaws in conjunction to place a malicious executable in the web root and compromise a vulnerable server. Solution Description -------------------- Restrict access to the executables already in the web root (badblue.exe, uninst.exe, and dyndns.exe) and take steps to ensure that users cannot write files to the web root. Tested Systems / Software (with versions) ------------------------------------------ BadBlue Personal Edition version 2.72 has been tested on Windows XP and Windows Server 2003. Other versions and systems are assumed to be vulnerable. Vendor Contact -------------- Vendor Name: BadBlue Vendor Website:

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