full-disclosure - Antivirus/Trojan/Spyware scanners DoS!

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Message-ID: <200406141042.06709.npguy@websurfer.com.np>
From: npguy at websurfer.com.np (npguy)
Subject: Antivirus/Trojan/Spyware scanners DoS!

clam use unzip utility outside its process space. if unzip itself is 
vulnerable (not in case of linux) then clam may face similar problem

check  "manager.c" of clam 0.15


    242     if(strbcasestr(filename, ".zip")) {
    243         char *args[] = { "unzip", "-P", "clam", "-o", (char *) 
filename, NULL };
    244         if((userprg = getargl(opt, "unzip")))
    245             ret = clamav_unpack(userprg, args, tmpdir, user, opt);
    246         else
    247             ret = clamav_unpack("unzip", args, tmpdir, user, opt);




On Monday 14 June 2004 09:36 am, Syke wrote:
> $ clamscan -V
> clamscan / ClamAV version 0.71
> $ clamscan SERVER_dwn.zip
> SERVER_dwn.zip: Eicar-Test-Signature FOUND
>
> ----------- SCAN SUMMARY -----------
> Known viruses: 21951
> Scanned directories: 0
> Scanned files: 1
> Infected files: 1
> Data scanned: 20.13 MB
> I/O buffer size: 131072 bytes
> Time: 5.447 sec (0 m 5 s)
>
> No problems for me.