Re: format strings vulns in /bin/login and /usr/bin/passwd

[flatline <flatline () blackhat nl>]

At 08:13 AM 26-01-2003 +0000, you wrote:

> Hello while doing a scan for format strings vulns on util-linux package it 
> came back with the following results.
>
> ./login.c:398 FUNC fprintf
> ./login.c:425 FUNC fprintf
> ./login.c:597 FUNC fprintf
> ./login.c:614 FUNC fprintf
> ./login.c:775 FUNC printf
> ./login.c:796 FUNC fprintf
> ./login.c:800 FUNC fprintf
> ./login.c:1109 FUNC syslog
> ./login.c:1119 FUNC printf
> ./login.c:1127 FUNC fprintf
> ./login.c:1183 FUNC fprintf
> ./login.c:1190 FUNC fprintf
> ./login.c:1201 FUNC fprintf
>
> ./passwd.c:161 FUNC printf
> ./passwd.c:174 FUNC printf
> ./passwd.c:175 FUNC printf
> ./passwd.c:176 FUNC printf
> ./passwd.c:181 FUNC printf
> ./passwd.c:186 FUNC printf
> ./passwd.c:197 FUNC printf
> ./passwd.c:204 FUNC printf
> ./passwd.c:222 FUNC printf
> ./passwd.c:223 FUNC printf
> ./passwd.c:277 FUNC fprintf
> ./passwd.c:316 FUNC printf
> ./passwd.c:323 FUNC printf
> ./passwd.c:331 FUNC printf
> ./passwd.c:401 FUNC syslog
> ./passwd.c:410 FUNC printf
> ./passwd.c:414 FUNC printf
> ./passwd.c:420 FUNC printf
>
> There is also a few other on other programs but i thought these 2 would be 
> most important since passwd is suid and login could be exploited remotly. 
> I am not very experianced in format strings any help/commets would be 
> great. Would these be able to get exploited?

i'm not sure what utility you used to find those "vulns", but i think that 
author should have his head examined, or perhaps you're just too ignorant 
to know how to properly work it. there are *no* format string 
vulnerabilities in the files you reported. the lack of a format specifier 
does *not* implicate bad code. printf("you are dumb"); is perfectly legal ..


> Regards
>
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>
> www.b0f.net
>
>
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