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Symantec VERITAS Multiple Buffer Overflows
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SUMMARY
<http://www.veritas.com/> Symantec VERITAS NetBackup is a backup server
and backup client.
Improper bound checking allows attackers to execute arbitrary code in
Symantec VERITAS.
DETAILS
Vulnerable Systems:
* VERITAS NetBackup 6.0 Client
* VERITAS NetBackup 6.0 Server
vnetd Buffer Overflow:
This specific flaw exists within specially crafted messages to the vnetd
service, listening on TCP port 13724 via opcode 6 (Request Service). An
attacker can overrun two fixed size buffers, one on the stack, and the
other in the .data section of the executable.
In the main function of bpspsserver, a call to get_adaptable_string() at
0x0040243A reads in a variable length string from the network in the form
of '[len][string]'. This string is then copied via a sprintf() at
0x00402458, and a swprintf() at 0x00402479 into two different fixed sized
buffers. The first buffer is on the stack and the second buffer is a
global variable.
Volume Manager Buffer Overflow:
This specific flaw exists within the volume manager daemon (vmd.exe) due
to incorrect bounds checking during a call to sscanf() that copies
user-supplied data to a stack-based buffer. The vulnerable daemon listens
on TCP port 13701.
Database Manager Buffer Overflow:
The specific flaw exists within the NetBackup Database Manager service
(bpdbm.exe) due to insufficient bounds checking during a call to sprintf()
that copies user-supplied data to a stack-based buffer. The vulnerable
daemon listens on TCP port 13721.
Vendor Response:
"Symantec engineers have addressed these issues in all currently supported
versions of NetBackup. Symantec engineers did additional reviews and will
continue on-going reviews of related file functionality to further enhance
the overall security of Veritas NetBackup products and to eliminate any
additional potential concerns.
Security updates are available for all supported products. Symantec
strongly recommends all customers immediately apply the latest cumulative
Security Pack updates or Maintenance Pack releases as indicated for their
supported product versions to protect against threats of this nature."
The security update can be found at:
<http://support.veritas.com/docs/281521>
http://support.veritas.com/docs/281521
CVE Information:
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0989>
CVE-2006-0989
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0990>
CVE-2006-0990
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0991>
CVE-2006-0991
Disclosure Timeline:
2005.12.19 - Digital Vaccine released to TippingPoint customers regarding
Database Manager Buffer Overflow
2005.12.20 - Vulnerability reported to vendor regarding Database Manager
Buffer Overflow
2006.01.23 - Vulnerability reported to vendor regarding regarding vnetd
Buffer Overflow
2006.01.23 - Digital Vaccine released to TippingPoint customers regarding
vnetd Buffer Overflow
2006.01.23 - Digital Vaccine released to TippingPoint customers regarding
Volume Manager Buffer Overflow
2006.01.24 - Vulnerability reported to vendor regarding Volume Manager
Buffer Overflow
2006.03.27 - Coordinated public release of advisory
ADDITIONAL INFORMATION
The information has been provided by <mailto:zdi-disclosures@3com.com>
zdi-disclosures.
The original article can be found at:
<http://www.tippingpoint.com/security/advisories/TSRT-06-01.html>
http://www.tippingpoint.com/security/advisories/TSRT-06-01.html,
<http://www.zerodayinitiative.com/advisories/ZDI-06-005.html>
http://www.zerodayinitiative.com/advisories/ZDI-06-005.html,
<http://www.zerodayinitiative.com/advisories/ZDI-06-006.html>
http://www.zerodayinitiative.com/advisories/ZDI-06-006.html
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