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Date: Fri, 19 Jul 2013 00:22:31 -0600
From: Kurt Seifried <kseifried@...hat.com>
To: oss-security@...ts.openwall.com
CC: Hamid Zamani <me@...idx9.ir>
Subject: Re: CVE Request : Radius Daemon (YardRadius v1.1.2-4
) Multiple Format String Vulnerabilities
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Hash: SHA1
On 07/18/2013 06:52 PM, Hamid Zamani wrote:
> Hello,
>
> Software name : YardRadius Version : 1.1.2-4
>
> Several Format String Vulnerabilites was found in latest YardRadius
> .
>
> Description :
>
>
>
> src/log.c :
>
>
>
> void
>
> log_msg(int priority,char *fmt, va_list args)
>
> {
>
> ...
>
> char buffer[1024];
>
> ...
>
> vfprintf(msgfd, fmt, args);
>
> ...
>
> vsnprintf(buffer,1024,fmt, args);
>
> #if defined(HAVE_SYSLOG)
>
> syslog(priority, buffer); //! if buff filled by "%x" so an attacker
> can see the addresses and ...
>
> ...
>
> vsyslog(priority, fmt, args);
>
> ...
>
> }
>
>
>
>
>
>
> ############
>
>
>
> src/version.c :
>
>
>
> #define STRVER "%s : YARD Radius Server %s ... $ "
>
>
>
>
>
> void
>
> version(void)
>
> {
>
> char buffer[1024];
>
>
>
> build_version(buffer,sizeof(buffer));
>
> fprintf(stderr, buffer);
>
> exit(-1);
>
> }
>
>
>
> ...
>
>
>
> void
>
> build_version(char *bp,size_t sizeofbp)
>
> {
>
> snprintf(bp,sizeofbp-1,STRVER, progname, VERSION);
>
> ..
>
>
>
> $ ln -s radiusd %x
>
> $ ./%x -v
>
> ./b77c0ff4 : YARD Radius Server 1.1 ...
>
>
>
> So an attacker may control the memory and execute arbitrary codes.
>
>
> Debian bug report :
> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=714612
>
> CXSecurity.com : http://cxsecurity.com/issue/WLB-2013070028
>
>
> Please assign a CVE number.
>
> Thank you, Hamid Zamani
>
Please use CVE-2013-4147 for this issue.
- --
Kurt Seifried Red Hat Security Response Team (SRT)
PGP: 0x5E267993 A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993
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