Infosecurity.US

CA20091008-01: Security Notice for CA Anti-Virus Engine

CA’s support is alerting customers to multiple security risks associated with CA Anti-Virus Engine. Vulnerabilities exist in the arclib component that can allow a remote attacker to cause a denial of service, or to cause heap corruption and potentially further compromise a system. CA has issued fixes to address the vulnerabilities. The first vulnerability, CVE-2009-3587, is due to improper handling of a specially crafted RAR archive file by the CA Anti-Virus engine arclib component. An attacker can create a malformed RAR archive file that results in heap corruption and allows the attacker to cause a denial of service or possibly further compromise the system. The second vulnerability, CVE-2009-3588, is due to improper handling of a specially crafted RAR archive file by the CA Anti-Virus engine arclib component. An attacker can create a malformed RAR archive file that results in stack corruption and allows the attacker to cause a denial of service.

Risk Rating

Medium

Platform

Windows
UNIX
Linux
Solaris
Mac OS X
Netware

Affected Products

CA Anti-Virus for the Enterprise (formerly eTrust Antivirus) 7.1
CA Anti-Virus for the Enterprise (formerly eTrust Antivirus) r8
CA Anti-Virus for the Enterprise (formerly eTrust Antivirus) r8.1
CA Anti-Virus 2007 (v8)
CA Anti-Virus 2008
CA Anti-Virus 2009
CA Anti-Virus Plus 2009
eTrust EZ Antivirus r7.1
CA Internet Security Suite 2007 (v3)
CA Internet Security Suite 2008
CA Internet Security Suite Plus 2008
CA Internet Security Suite Plus 2009
CA Threat Manager for the Enterprise (formerly eTrust Integrated Threat Management) r8
CA Threat Manager for the Enterprise (formerly eTrust Integrated Threat Management) 8.1
CA Threat Manager Total Defense
CA Gateway Security r8.1
CA Protection Suites r2
CA Protection Suites r3
CA Protection Suites r3.1
CA Secure Content Manager (formerly eTrust Secure Content Manager) 1.1
CA Secure Content Manager (formerly eTrust Secure Content Manager) 8.0
CA Network and Systems Management (NSM) (formerly Unicenter Network and Systems Management) r3.0
CA Network and Systems Management (NSM) (formerly Unicenter Network and Systems Management) r3.1
CA Network and Systems Management (NSM) (formerly Unicenter Network and Systems Management) r11
CA Network and Systems Management (NSM) (formerly Unicenter Network and Systems Management) r11.1
CA ARCserve Backup r11.5 on Windows
CA ARCserve Backup r12 on Windows
CA ARCserve Backup r12.0 SP1 on Windows
CA ARCserve Backup r12.0 SP 2 on Windows
CA ARCserve Backup r12.5 on Windows
CA ARCserve Backup r11.1 Linux
CA ARCserve Backup r11.5 Linux
CA ARCserve for Windows Client Agent
CA ARCserve for Windows Server component
CA eTrust Intrusion Detection 2.0 SP1
CA eTrust Intrusion Detection 3.0
CA eTrust Intrusion Detection 3.0 SP1
CA Common Services (CCS) r3.1
CA Common Services (CCS) r11
CA Common Services (CCS) r11.1
CA Anti-Virus SDK (formerly eTrust Anti-Virus SDK)
CA Anti-Virus Gateway (formerly eTrust Antivirus Gateway) 7.1

Non-Affected Products

CA Anti-Virus engine with arclib version 8.1.4.0 or later installed

How to determine if the installation is affected

For products on Windows:

1. Using Windows Explorer, locate the file “arclib.dll”. By default, the file is located in the “C:\Program Files\CA\SharedComponents\ScanEngine” directory (*).
2. Right click on the file and select Properties.
3. Select the Version tab.
4. If the file version is earlier than indicated below, the installation is vulnerable.

*For eTrust Intrusion Detection 2.0, the file is located in “Program Files\eTrust\Intrusion Detection\Common”, and for eTrust Intrusion Detection 3.0 and 3.0 sp1, the file is located in “Program Files\CA\Intrusion Detection\Common”.

For CA Anti-Virus r8.1 on non-Windows platforms:

Use the compver utility provided on the CD to determine the version of Arclib. If the version is less than 8.1.4.0, the installation is vulnerable.

Example compver utility output:

                                       ------------------------------------------------
                                       COMPONENT NAME VERSION
                                       ------------------------------------------------
                                       eTrust Antivirus Arclib Archive Library 8.1.4.0
                                       ... (followed by other components)

For reference, the following are file names for arclib on non-Windows operating systems:

Solution

CA released arclib 8.1.4.0 on August 12 2009. If your product is configured for automatic updates, you should already be protected, and you need to take no action. If your product is not configured for automatic updates, then you simply need to run the update utility included with your product.

CA Network and Systems Management (NSM) (formerly Unicenter Network and Systems Management) r3.0: apply fix # RO11964.

CA Network and Systems Management (NSM) (formerly Unicenter Network and Systems Management) r3.1: apply fix # RO11964.

CA Network and Systems Management (NSM) (formerly Unicenter Network and Systems Management) r11: apply fix # RO11964.

CA Network and Systems Management (NSM) (formerly Unicenter Network and Systems Management) r11.1: apply fix # RO11964.

CA Common Services (CCS) r3.1: apply fix # RO11954.

CA Anti-Virus for the Enterprise (formerly eTrust Antivirus) 7.1 32bit: apply fix # RO10663.

CA Anti-Virus for the Enterprise (formerly eTrust Antivirus) 7.1 IA64: apply fix # RO10664.

CA Anti-Virus for the Enterprise (formerly eTrust Antivirus) 7.1 AMD64: apply fix # RO10665.

CA Secure Content Manager (formerly eTrust Secure Content Manager) r1.1: apply fix # RO10999.

CA Secure Content Manager (formerly eTrust Secure Content Manager) r8.0: apply fix # RO10999.

CA Anti-Virus Gateway (formerly eTrust Antivirus Gateway) 7.1: apply fix # RO11000.

CA Gateway Security r8.1: RO10999.

CA ARCserve for Windows Server component installed on a 64 bit machine: apply fixes # RO10663 and RO10664 (IA64) or RO10665 (AMD64).

CA ARCserve for Windows Server component installed on a 32 bit machine: apply fix # RO10663.

CA ARCserve for Windows Client Agent installed on a 64 bit machine: apply fix # RO10664 (IA64) or RO10665 (AMD64).

CA ARCserve for Windows Client Agent installed on a 32 bit machine: apply fix # RO10663.

CA ARCserve for Linux Server r11.5: apply fix # RO10729.

CA ARCserve for Linux:

1. Download RO10729.tar.Z from RO10729 into a temporary location /tmp/RO10729
2. Uncompress and untar RO10729.tar.Z as follows:
   uncompress RO10729.tar.Z
   tar -xvf RO10729.tar

   The new “libarclib.so” will be extracted to /tmp/RO10729

3. Change the directory to $CAIGLBL0000/ino/config as follows:
   cd $CAIGLBL0000/ino/config
4. Rename “libarclib.so” to “libarclib.so.RO10729″ as follows:
   mv libarclib.so libarclib.so.RO10729
5. Copy the new libarclib.so as follows:
   cp /tmp/RO10729/libarclib.so $CAIGLBL0000/ino/config/
6. chmod +x $CAIGLBL0000/ino/config/libarclib.so
7. Stop the common agent (caagent stop)
8. Change the directory to ARCserve common agent directory (typically /opt/CA/BABcmagt)
   cd /opt/CA/BABcmagt

   Note: To find out the agent home directory run the following command:
   dirname ‘ls -l /usr/bin/caagent |cut -f2 -d”>”‘

9. Save a copy of libarclib.so
   cp -p libarclib.so libarclib.so.RO10729
10. Copy over the new libarclib.so as follows:
    cp $/tmp/RO10729/libarclib.so.
11. Start the common agent (caagent start)
12. Repeat steps (7-11) on all remote Linux client agents’ installations.
13. rm -rf /tmp/RO10729

Workaround

Do not open email attachments or download files from untrusted sources.

References

CVE-2009-3587 – CA Anti-Virus RAR archive heap corruption

CVE-2009-3588 – CA Anti-Virus RAR archive stack corruption

Acknowledgement

CVE-2009-3587 – Thierry Zoller – G-SEC

CVE-2009-3588 – Thierry Zoller – G-SEC

Change History

Version 1.0: Initial Release
Version 1.1: Updated list of affected products; added workaround.

If additional information is required, please contact CA Support at https://support.ca.com.

If you discover a vulnerability in CA products, please report your findings to the CA Product Vulnerability Response Team.