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AUSCERT External Security Bulletin Redistribution
ClamAV 0.102.2 security patch released
7 February 2020
AusCERT Security Bulletin Summary
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Denial of Service -- Remote/Unauthenticated
CVE Names: CVE-2020-3123
Comment: This advisory references vulnerabilities in products which run on
platforms other than ClamAV. It is recommended that administrators
running ClamAV check for an updated version of the software for
their operating system.
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Wednesday, February 5, 2020
ClamAV 0.102.2 security patch released
Today, we're publishing 0.102.2. Navigate to ClamAV's downloads page to
download the release materials.
ClamAV 0.102.2 is a security patch release to address the following issues.
o CVE-2020-3123: A denial-of-service (DoS) condition may occur when using the
optional credit card data-loss-prevention (DLP) feature. Improper bounds
checking of an unsigned variable resulted in an out-of-bounds read, which
causes a crash.
o Significantly improved the scan speed of PDF files on Windows.
o Re-applied a fix to alleviate file access issues when scanning RAR files in
downstream projects that use libclamav where the scanning engine is
operating in a low-privilege process. This bug was originally fixed in
0.101.2 and the fix was mistakenly omitted from 0.102.0.
o Fixed an issue where freshclam failed to update if the database version
downloaded is one version older than advertised. This situation may occur
after a new database version is published. The issue affected users
downloading the whole CVD database file.
o Changed the default freshclam ReceiveTimeout setting to 0 (infinite). The
ReceiveTimeout had caused needless database update failures for users with
slower internet connections.
o Correctly display the number of kilobytes (KiB) in progress bar and reduced
the size of the progress bar to accommodate 80-character width terminals.
o Fixed an issue where running freshclam manually causes a daemonized
freshclam process to fail when it updates because the manual instance
deletes the temporary download directory. The freshclam temporary files
will now download to a unique directory created at the time of an update
instead of using a hardcoded directory created/destroyed at the program
o Fix for freshclam's OnOutdatedExecute config option.
o Fixes a memory leak in the error condition handling for the email parser.
o Improved bound checking and error handling in ARJ archive parser.
o Improved error handling in PDF parser.
o Fix for memory leak in byte-compare signature handler.
o Updates to the unit test suite to support libcheck 0.13.
o Updates to support autoconf 2.69 and automake 1.15.
Special thanks to the following people for code contributions and bug reports:
o Antoine Deschenes
o Eric Lindblad
o Gianluigi Tiesi
o Tuomo Soini
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