vade79 has discovered two vulnerabilities in Gopher client, which can be exploited by malicious people to compromise a vulnerable system.

1) A boundary error in the "VIfromLine()" function when copying an input line to a stack buffer can be exploited to cause a stack-based buffer overflow via an overly long "+VIEWS:" reply from the server.

2) A boundary error in the "FIOgetargv()" function when processing arguments for launching external programs can be exploited to cause a stack-based buffer overflow via an overly long "hWeblink" reply from the server.

Successful exploitation requires that a user e.g. is tricked into connecting to a malicious Gopher server.

The vulnerabilities have been confirmed in version 3.0.9. Other versions may also be affected.

Solution
Update to version 3.0.11.
Further details available to Secunia VIM customers

Provided and/or discovered by
vade79

Changelog
Further details available to Secunia VIM customers

Original Advisory
http://www.fakehalo.us/xgopher-client.c

Other references
Further details available to Secunia VIM customers

Deep Links
Links available to Secunia VIM customers