ISC Information for VU#196945

• Vendor Information Help Date Notified: 05 Jan 2001
• Statement Date:
• Date Updated: 04 Apr 2001

Status

Affected

Vendor Statement

Name: "tsig bug"
Versions: 8.2, 8.2-P1, 8.2.1, 8.2.2, 8.2.2-P1, 8.2.2-P2, 8.2.2-P3,
8.2.2-P4, 8.2.2-P5, 8.2.2-P6, 8.2.2-P7 and all 8.2.3 betas.
Severity: CRITICAL
Exploitable: Remotely
Type: Access possible

Description:

It is possible to overflow a buffer handling TSIG signed
queries, thereby obtaining access to the system.

Workarounds:

None.

Active Exploits:

Exploits for this bug exist.

Solution:

Upgrade to BIND 8.2.3-REL or preferably BIND 9.1.

Credits:

Discovery and initial documentation of this vulnerability
was conducted by Anthony Osborne and John McDonald of the
COVERT Labs at PGP Security.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Vendor References

None

Addendum

The ISC has posted this information on their web site at:

http://www.isc.org/products/BIND/bind-security.html

The source code for ISC BIND can be downloaded from:

ftp://ftp.isc.org/isc/bind/src/

If you have feedback, comments, or additional information about this vulnerability, please send us email.