Ralf,

> > On our amavisd-new box:
> Jul 30 16:36:42 mail kernel: [608438.105690] lha[700]: segfault at bfcf4d55
>   ip 0804d62a sp bfceb04c error 4 in lha[8048000+d000]
> Jul 30 16:41:11 mail kernel: [608707.038312] lha[1970]: segfault at bfd9ddf5
>   ip 0804d62a sp bfd940ec error 4 in lha[8048000+d000]
> Jul 30 21:29:54 mail kernel: [626030.125254] lha[16033]:segfault atbf8868e5
>   ip 0804d62a sp bf87cbdc error 4 in lha[8048000+d000]
> Jul 30 21:39:58 mail kernel: [626634.337639] lha[18297]:segfault at bffab805
>   ip 0804d62a sp bffa1afc error 4 in lha[8048000+d000]

> Should I worry?

Yes.
Any crash caused by data over which one has no control
is a potential security risk and a cause for concern.

I've seen these crashes too recently.

> It seems that "Trojan.Zbot-1730" makes LHA crash?!

Henrik K wrote:
> It would seem wiser to just let ClamAV handle LHA, instead of using some
> ancient binary (I don't think there is any modern/updated version?).

I agree.


LHa decoder can be disabled by removing (or commenting-out) its entry
in the @decoders list, or by just making the lha program unavailable
(renaming or deinstalling it).

  Mark

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