Bugzilla Bug 143093

Hi teams,

clamav is vulnerable :(

SA 21374:

"Description:
Damian Put has discovered a vulnerability in Clam AntiVirus, which can be
exploited by malicious people to cause a DoS (Denial of Service) and
potentially compromise a vulnerable system.

The vulnerability is caused due to an boundary error in the "pefromupx()"
function in libclamav/upx.c when unpacking PE executable files compressed with
UPX. This can be exploited to cause a heap-based buffer overflow via a
specially crafted UPX compressed file.

Successful exploitation crashes the service and may allow execution of
arbitrary code.

The vulnerability has been confirmed in versions 0.88.2 and 0.88.3. Other
versions may also be affected.

Solution:
Disable the "ScanPE" option for clamd and start clamscan with the "--no-pe"
option. Please note that this completely disables the scanning of PE files.
Then block or filter PE files in some other way.

Provided and/or discovered by:
Damian Put

Original Advisory:
http://www.overflow.pl/adv/clamav_upx_heap.txt "

note that ScanPE is enabled by default

let's wait for a patch or update...

0.88.4 is out, I'll commit the ebuild in few minutes

Ebuild for 0.88.4 is in the tree now - by the power bestowed unto me by
jaervosz, I'm CCing arch teams, please do your magic.

x86 has been stabilized by me already, after testing on two stable boxes.

SPARC virus detected, all your arch are belong to us!

Looks fine on Alpha.

amd64 done.

ppc follows

ppc64 stable

debian isn't updated yet, we may have a chance !  :)

stable on hppa

Ready for GLSA ! :)

GLSA 200608-13

thanks for the quick work on this one