Gentoo Linux Advisories: OpenOffice.org, ClamAV

---

Gentoo Linux Security Advisory GLSA 200405-04

---

http://security.gentoo.org/

---

Severity: High
Title: OpenOffice.org vulnerability when using DAV servers
Date: May 11, 2004
Bugs: #47926
ID: 200405-04

---

Synopsis

Several format string vulnerabilities are present in the Neon
library included in OpenOffice.org, allowing remote execution of
arbitrary code when connected to an untrusted WebDAV server.

Background

OpenOffice.org is an office productivity suite, including word
processing, spreadsheets, presentations, drawings, data charting,
formula editing, and file conversion facilities.

Affected packages

---

NOTE: All packages listed without architecture tags apply to all
architectures…

---

6 affected packages

---

Description

OpenOffice.org includes code from the Neon library in functions
related to publication on WebDAV servers. This library is
vulnerable to several format string attacks.

Impact

If you use the WebDAV publication and connect to a malicious
WebDAV server, this server can exploit these vulnerabilities to
execute arbitrary code with the rights of the user running
OpenOffice.org.

Workaround

As a workaround, you should not use the WebDAV publication
facilities.

Resolution

There is no binary version including the fix yet. All users of
the openoffice-bin and ximian-openoffice-bin packages making use of
the WebDAV publication functions should upgrade to the latest
version of the corresponding source-based package.

openoffice users on the x86 architecture should:

    # emerge sync
    # emerge -pv ">=app-office/openoffice-1.1.1-r1"
    # emerge ">=app-office/openoffice-1.1.1-r1"

openoffice users on the sparc architecture should:

    # emerge sync
    # emerge -pv ">=app-office/openoffice-1.1.0-r3"
    # emerge ">=app-office/openoffice-1.1.0-r3"

openoffice users on the ppc architecture should:

    # emerge sync
    # emerge -pv ">=app-office/openoffice-1.0.3-r1"
    # emerge ">=app-office/openoffice-1.0.3-r1"

openoffice-ximian users should:

    # emerge sync
    # emerge -pv ">=app-office/openoffice-ximian-1.1.51-r1"
    # emerge ">=app-office/openoffice-ximian-1.1.51-r1"

References

[ 1 ] CAN-2004-0179

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0179

[ 2 ] Neon vulnerabilities (GLSA 200405-01)

http://www.gentoo.org/security/en/glsa/glsa-200405-01.xml

Availability

This GLSA and any updates to it are available for viewing at the
Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200405-04.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or
alternatively, you may file a bug at http://bugs.gentoo.org.

License

Copyright 2004 Gentoo Technologies, Inc; referenced text belongs
to its owner(s).

The contents of this document are licensed under the Creative
Commons – Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/1.0

---

Gentoo Linux Security Advisory GLSA 200405-03

---

http://security.gentoo.org/

---

Severity: High
Title: ClamAV VirusEvent parameter vulnerability
Date: May 11, 2004
Bugs: #46264
ID: 200405-03

---

Synopsis

With a specific configuration (using %f in the VirusEvent
parameter), Clam AntiVirus is vulnerable to an attack allowing
execution of arbitrary commands.

Background

• From http://www.clamav.net/ :

“Clam AntiVirus is a GPL 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. Most importantly, the virus database is
kept up to date.”

Affected packages

---

Description

The VirusEvent parameter in the clamav.conf configuration file
allows to specify a system command to run whenever a virus is
found. This system command can make use of the “%f” parameter which
is replaced by the name of the file infected. The name of the file
scanned is under control of the attacker and is not sufficiently
checked. Version 0.70 of clamav disables the use of the “%f”
parameter.

Impact

Sending a virus with a malicious file name can result in
execution of arbirary system commands with the rights of the
antivirus process. Since clamav is often associated to mail servers
for email scanning, this attack can be used remotely.

Workaround

You should not use the “%f” parameter in your VirusEvent
configuration.

Resolution

All users of Clam AntiVirus should upgrade to the latest stable
version:

    # emerge sync
    # emerge -pv ">=net-mail/clamav-0.70"
    # emerge ">=net-mail/clamav-0.70"

Availability

This GLSA and any updates to it are available for viewing at the
Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200405-03.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or
alternatively, you may file a bug at http://bugs.gentoo.org.

License

Copyright 2004 Gentoo Technologies, Inc; referenced text belongs
to its owner(s).

The contents of this document are licensed under the Creative
Commons – Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/1.0