Fedora 32: ClamAV 0.102.4 Security Advisory for Multiple Exploits

Clam AntiVirus is an anti-virus toolkit for UNIX. The main purpose of this

software is the integration with mail servers (attachment scanning). The

package provides a flexible and scalable multi-threaded daemon, a command

line scanner, and a tool for automatic updating via Internet. The programs

are based on a shared library distributed with the Clam AntiVirus package,

which you can use with your own software. The virus database is based on

the virus database from OpenAntiVirus, but contains additional signatures

(including signatures for popular polymorphic viruses, too) and is KEPT UP

TO DATE.

ClamAV 0.102.4 is a bug patch release to address the following issues:

CVE-2020-3350

Fixed a vulnerability a malicious user could exploit to replace a scan target's

directory with a symlink to another path to trick clamscan, clamdscan, or

clamonacc into removing or moving a different file (such as a critical system

file). The issue would affect users that use the --move or --remove options for

clamscan, clamdscan and clamonacc. For more information about AV quarantine

attacks using links, see RACK911 Lab's report

. CVE-2020-3327 Fixed a vulnerability in the ARJ archive-parsing module in ClamAV 0.102.3 that could cause a denial-of-service (DoS)

condition. Improper bounds checking resulted in an out-of-bounds read that could

cause a crash. The previous fix for this CVE in version 0.102.3 was incomplete.

This fix correctly resolves the issue. CVE-2020-3481

Fixed a

vulnerability in the EGG archive module in ClamAV 0.102.0 - 0.102.3 that could

cause a denial-of-service (DoS) condition. Improper error handling could cause a

crash due to a NULL pointer dereference. This vulnerability is mitigated for

those using the official ClamAV signature databases because the file type

signatures in daily.cvd will not enable the EGG archive parser in affected

versions.

* Fri Jul 17 2020 Orion Poplawski - 0.102.4-1

- Update to 0.102.4 (bz#1857867,1858262,1858263,1858265,1858266)

- Security fixes CVE-2020-3327 CVE-2020-3350 CVE-2020-3481

* Thu May 28 2020 Orion Poplawski - 0.102.3-2

- Update clamd README file (bz#1798369)

[ 1 ] Bug #1858261 - CVE-2020-3350 clamav: malicious user exploit to replace scan target's directory with symlink

https://bugzilla.redhat.com/show_bug.cgi?id=1858261

[ 2 ] Bug #1858264 - CVE-2020-3481 clamav: improper error handling causing crash due to NULL pointer dereference

https://bugzilla.redhat.com/show_bug.cgi?id=1858264

su -c 'dnf upgrade --advisory FEDORA-2020-6584a641ae' at the command

line. For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

All packages are signed with the Fedora Project GPG key. More details on the

GPG keys used by the Fedora Project can be found at

https://fedoraproject.org/security/

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