Some vulnerabilities have been discovered in POP Peeper, which can be exploited by malicious people to compromise a user's system.

1) A boundary error exists in the processing of POP3 responses. This can be exploited to cause a stack-based buffer overflow via an overly long parameter attached to an UIDL response.

2) A boundary error exists in the processing of the "Date:" email header in POP3 responses to the RETR command. This can be exploited to cause a stack-based buffer overflow e.g. via an overly long string in the "Date:" email header.

Successful exploitation allows execution of arbitrary code, but requires that the user is tricked into connecting to a malicious mail server.

3) A boundary error in the processing of the "From:" email header can be exploited to cause a stack-based buffer overflow by e.g. tricking a user into connecting to a malicious server or into opening a specially crafted ".eml" or ".html" file.

Successful exploitation allows execution of arbitrary code.

The vulnerabilities are confirmed in version 3.4.0.0. Other versions may also be affected.

Solution
Secunia is currently not aware of a solution.

Provided and/or discovered by
1, 2) Jeremy Brown
3) His0k4

Changelog
Further details available to Secunia VIM customers

Original Advisory
Jeremy Brown:
http://www.krakowlabs.com/res/adv/KL0209ADV-poppeeper_uidl-bof.txt
http://www.krakowlabs.com/res/adv/KL0309ADV-poppeeper_date-bof.txt

His0k4:
http://milw0rm.com/exploits/8248

Stack:
http://milw0rm.com/exploits/8274
http://milw0rm.com/exploits/8275

Deep Links
Links available to Secunia VIM customers