[bug-notifications] [clamav 0004987]: Some files are wrongly reported as having a bad format

[Mantis Bug Tracker]

The following issue has been ASSIGNED. 
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https://www.opencsw.org/mantis/view.php?id=4987 
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Reported By:                laurent
Assigned To:                bonivart
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Project:                    clamav
Issue ID:                   4987
Category:                   regular use
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     assigned
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Date Submitted:             2012-08-01 10:20 CEST
Last Modified:              2012-08-01 11:45 CEST
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Summary:                    Some files are wrongly reported as having a bad
format
Description: 
Heads up:
There is a bug in 0.97.5 which makes it report some files as having format
errors.

This happens on some Solaris related files, eg:
/var/tmp/137081-07.zip: OK
/var/tmp/137148-07.zip: OK
/var/tmp/137321-02.zip: Can't unpack some data ERROR
/var/tmp/138823-10.zip: OK
/var/tmp/138827-10.zip: OK

----------- SCAN SUMMARY -----------
Known viruses: 1278842
Engine version: 0.97.5
Scanned directories: 0
Scanned files: 4
Infected files: 0
Total errors: 1
Data scanned: 80.28 MB
Data read: 22.60 MB (ratio 3.55:1)
Time: 18.295 sec (0 m 18 s)

It also happens to me on some Red Hat RPM files, and a handful of others,
.gz, .bz2. This bug is cross-platform, I first noticed it on RHEL5 with
rpmforge ClamAV.
Of course those files are perfectly fine:
No errors detected in compressed data of /var/tmp/137321-02.zip.

An upstream bug is already open, there's apparently no official fix at this
point:
https://bugzilla.clamav.net/show_bug.cgi?id=5252

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