Published: May 19 2008, 05:06 PM
by Ken Williams

On May 19th, 2008 CA published a security notice to address multiple vulnerabilities in CA ARCserve Backup.

Title: CA ARCserve Backup caloggerd and xdr Functions Vulnerabilities


CA Advisory Date: 2008-05-19


Reported By:

An anonymous researcher working with the iDefense VCP
Damian Put working with ZDI/TippingPoint


Impact: A remote attacker can cause a denial of service or execute arbitrary code.


Summary: CA ARCserve Backup contains multiple vulnerabilities that can allow a remote attacker to cause a denial of service or execute arbitrary code. CA has issued patches to address the vulnerabilities. The first vulnerability, CVE-2008-2241, is due to insufficient path verification by the logging service, caloggerd. An attacker can append data to arbitrary files, which can lead to system compromise. The second vulnerability, CVE-2008-2242, is due to insufficient bounds checking by multiple xdr functions. An attacker can cause an overflow and execute arbitrary code.


Mitigating Factors: These issues affect only the server installation.


Severity: CA has given these vulnerabilities a maximum risk rating of High.


Affected Products:
CA ARCserve Backup r11.5 (formerly BrightStor ARCserve Backup r11.5)
CA ARCserve Backup r11.1 (formerly BrightStor ARCserve Backup r11.1)
CA ARCserve Backup r11.0 (formerly BrightStor ARCserve Backup r11.0)
CA Server Protection Suite r2
CA Business Protection Suite r2
CA Business Protection Suite for Microsoft Small Business Server Standard Edition r2
CA Business Protection Suite for Microsoft Small Business Server Premium Edition r2

Not Vulnerable:
CA ARCserve Backup r12
CA ARCserve Backup r11.5 SP4


Affected Platforms:
Windows
Linux x86
Linux IA-64
Linux x86_64
Tru64
HP-UX
Solaris
Linux/s390


Status and Recommendation:

CA has issued the following patches and upgrades to address the vulnerabilities.

CA ARCserve Backup r11.5 Windows:
QO92996

CA ARCserve Backup r11.1 Windows:
QO92849

CA ARCserve Backup r11.0 Windows:
Upgrade to 11.1 and apply the latest patches.

CA Protection Suites r2:
QO92996

The issues can also be addressed by applying CA ARCserve Backup 11.5 SP4 for Windows:
QO99129

For CA ARCserve Backup r11.5 and r11.1 on UNIX and Linux based platforms, upgrade to 11.5 SP3.

Note: The upgrade for 11.1 requires new license keys, which are available for free until December 31, 2008. Visit the following link for more information.
https://support.ca.com/irj/portal/anonymous/phpsupcontent?contentID=172649

CA ARCserve Backup r11.5 Linux/x86/IA-64/x86_64:
QO89980

CA ARCserve Backup r11.5 Tru64:
QO89985

CA ARCserve Backup r11.5 HP-UX:
QO89984

CA ARCserve Backup r11.5 Solaris:
QO89982

CA ARCserve Backup r11.5 AIX:
QO89981

CA ARCserve Backup r11.5 Linux/s390:
QO89983

CA ARCserve Backup r11.1 Linux/x86/IA-64/x86_64:
QO89980

CA ARCserve Backup r11.1 Tru64:
QO89985

CA ARCserve Backup r11.1 HP-UX:
QO89984

CA ARCserve Backup r11.1 Solaris:
QO89982

CA ARCserve Backup r11.1 AIX:
QO89981

CA ARCserve Backup r11.1 Linux/s390:
QO89983


How to determine if you are affected:

For Windows:

   1. Using Windows Explorer, locate the file "caloggerd.exe". By default, the file is located in the "C:\Program Files\CA\BrightStor ARCserve Backup" directory.

   2. Right click on the file and select Properties.

   3. Select the General tab.

   4. If the file timestamp is earlier than indicated in the below table, the installation is vulnerable.

* For Protection Suites r2 , use the file timestamp for CA ARCserve Backup r11.5.


For Linux/x86/IA-64/x86_64, Tru64, HP-UX, Solaris, Linux/s390:

Examine the file RELVERSION to determine the version. This can be done with the following command from a shell:

cat $BAB_HOME/data/RELVERSION

If the build number is below 2427, the installation is vulnerable.


Workaround: None


References (URLs may wrap):
CA Support:
http://support.ca.com/
Security Notice for CA ARCserve Backup caloggerd and xdr functions
https://support.ca.com/irj/portal/anonymous/phpsupcontent?contentID=176798
Solution Document Reference APARs:
QO92996, QO92849, QO99129, QO89980, QO89985, QO89984, QO89982, QO89981, QO89983
CA Security Response Blog posting:
CA ARCserve Backup caloggerd and xdr Functions Vulnerabilities
http://community.ca.com/blogs/casecurityresponseblog/archive/2008/05/19.aspx
Reported By:
An anonymous researcher working with the iDefense VCP
Damian Put working with ZDI/TippingPoint
CVE References:
CVE-2008-2241 - caloggerd file appending
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2241
CVE-2008-2242 - xdr function buffer overflow vulnerability
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2242
OSVDB References: Pending
http://osvdb.org/


Changelog for this advisory:
v1.0 - Initial Release


Customers who require additional information should contact CA Technical Support at http://support.ca.com.

For technical questions or comments related to this advisory, please send email to vuln AT ca DOT com.

If you discover a vulnerability in CA products, please report your findings to vuln AT ca DOT com, or utilize our "Submit a Vulnerability" form.
URL: http://www.ca.com/us/securityadvisor/vulninfo/submit.aspx