Title: Rxvt Buffer Overflow Vulnerability
Severity: MODERATE
Description:
Rxvt is a color VT102 terminal emulator for X intended as an xterm(1) replacement.
A buffer overflow vulnerability exists in the rxvt internal tt_printf() function, used to write printf() formatted data to stdout.
The condition is the result of an unbounded string copy into a fixed-sized buffer. When a user-supplied rxvt window name longer than approximately 256 characters is printed using the tt_printf() function, the internal buffer is overflowed. The window name can be supplied to rxvt with the '-T' or '-name' command line options.
Because rxvt is installed setgid 'utmp' by some system configurations, it may be possible for local users to exploit this vulnerability to execute arbitrary code/commands with these privileges.
Affected Products:
- rxvt rxvt 2.6.1
- rxvt rxvt 2.6.2
References:
- rxvt: rxvt homepage
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