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multiple buffer overflows in xboing


Steve Kemp reports (in a Debian bug submission):

Due to improper bounds checking it is possible for a malicious user to gain a shell with membership group 'games'. (The binary is installed setgid games).

Environmental variables are used without being bounds-checked in any way, from the source code:

   /* Use the environment variable if it exists */
   if ((str = getenv("XBOING_SCORE_FILE")) != NULL)
	strcpy(filename, str);
	strcpy(filename, HIGH_SCORE_FILE);

    if ((ptr = getenv("HOME")) != NULL)
	(void) strcpy(dest, ptr);

Neither of these checks are boundschecked, and will allow arbitary shell code to be run.



portaudit: multiple buffer overflows in xboing

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Oliver Eikemeier <>