Package: ttylog
Version: 0.1.c-1
Severity: normal
*** Please type your report below this line ***
The script uses strcpy to copy the specified device
name into a fixed buffer.
This program isn't a security-sensitive one so the
issue is minor, but the bug should be fixed:
s...@gold:$ /usr/sbin/ttylog -d `perl -e 'print "X"x3000'`
Segmentation fault
Patch included to turn this into:
(139) s...@gold:/tmp/foo/ttylog-0.1.c$ ./ttylog -d `perl -e 'print
"X"x3000'`
./ttylog: invalid device
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
--- ttylog.c.orig 2009-11-02 11:09:39.000000000 +0000
+++ ttylog.c 2009-11-02 11:10:25.000000000 +0000
@@ -79,7 +79,9 @@
{
if (argv[i + 1] != NULL)
{
- strcpy (modem_device, argv[i + 1]);
+ memset( modem_device, '\0', sizeof(modem_device));
+ strncpy (modem_device, argv[i + 1],sizeof(modem_device)-1);
+
}
else
{
-- System Information:
Debian Release: squeeze/sid
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.30-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages ttylog depends on:
ii libc6 2.10.1-4 GNU C Library: Shared libraries
ttylog recommends no packages.
ttylog suggests no packages.
-- no debconf information
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