Date: 06 December 2006
Click here for printable version
Click here for PGP verifiable version
-----BEGIN PGP SIGNED MESSAGE-----
AUSCERT External Security Bulletin Redistribution
ESB-2006.0890 -- [Win][Linux][HP-UX][AIX][z/OS]
IBM Tivoli Storage Manager Mutiple Buffer Overflow Vulnerabilities
6 December 2006
AusCERT Security Bulletin Summary
Product: Tivoli Storage Manager prior to 5.3.4
Tivoli Storage Manager prior to 5.2.9
Publisher: Tipping Point
Operating System: AIX
Impact: Denial of Service
CVE Names: CVE-2006-5855
- --------------------------BEGIN INCLUDED TEXT--------------------
TSRT-06-14: IBM Tivoli Storage Manager Mutiple Buffer Overflow
December 4, 2006
- -- CVE ID:
- -- Affected Vendor:
- -- Affected Products:
Tivoli Storage Manager <5.2.9
Tivoli Storage Manager <5.3.4
- -- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability since April 3, 2006 by Digital Vaccine protection
filter ID 4248. For further product information on the TippingPoint IPS:
- -- Vulnerability Details:
These vulnerabilities allow attackers to execute arbitrary code on
vulnerable installations of IBM Tivoli Storage Manager. Authentication
is not required to exploit these vulnerabilities.
The specific flaws are similar and exist in the processing of messages
by the Tivoli Storage Manager service, bound on TCP port 1500. The
messages are structured in the form [index][size]. The 'index' field
specifies an integer offset into the body of the message for a specific
field, and the 'size' field specifies the size of the indexed field.
As no validation is done on the index fields, an attacker can force the
service to look beyond the end of the packet, often landing in
unallocated memory and resulting in a denial of service.
The size fields are often checked to ensure they do not exceed the
bounds of the destination buffers that data is being copied to.
However, we have found the following four instances where the size
files are left unchecked:
The initial sign-on request contains a field to specify the language.
In normal cases we've seen, this string is dscenu.txt. Typically the
server will validate that the language string is no longer than 0x100
bytes. However, if the first byte of the language string is 0x18, this
check will not occur, and a fixed sized buffer will be overrun.
Overflows 2 and 3
There is an overflow vulnerability in messages processed by the
SmExecuteWdsfSession function. There are two fields in this request,
both are copied into fixed sized buffers, without any validation of
There is an overflow in the open registration message due to an
unchecked copy into a fixed size buffer for the contact field of the
All four of the above detailed overflows can lead to arbitrary code
execution under the context of the Tivoli service.
- -- Vendor Response:
IBM has issued an update to correct this vulnerability. More details can
be found at:
- -- Disclosure Timeline:
2006.04.03 - Digital Vaccine released to TippingPoint customers
2006.05.09 - Vulnerability reported to vendor
2006.12.04 - Coordinated public release of advisory
- -- Credit:
This vulnerability was discovered by the TippingPoint Security Research
- -- About the Zero Day Initiative (ZDI):
Established by TippingPoint, a division of 3Com, The Zero Day Initiative
(ZDI) represents a best-of-breed model for rewarding security
researchers for responsibly disclosing discovered vulnerabilities.
Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:
The ZDI is unique in how the acquired vulnerability information is used.
3Com does not re-sell the vulnerability details or any exploit code.
Instead, upon notifying the affected product vendor, 3Com provides its
customers with zero day protection through its intrusion prevention
technology. Explicit details regarding the specifics of the
vulnerability are not exposed to any parties until an official vendor
patch is publicly available. Furthermore, with the altruistic aim of
helping to secure a broader user base, 3Com provides this vulnerability
information confidentially to security vendors (including competitors)
who have a vulnerability protection or mitigation product.
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to email@example.com
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
If you believe that your computer system has been compromised or attacked in
any way, we encourage you to let us know by completing the secure National IT
Incident Reporting Form at:
Australian Computer Emergency Response Team
The University of Queensland
Internet Email: firstname.lastname@example.org
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
-----BEGIN PGP SIGNATURE-----
-----END PGP SIGNATURE-----