Combination of DNS64 and RPZ Can Lead to Crash
CVE-2017-3135

7.5HIGH

Key Information:

Vendor

Isc
Status
Bind 9
Vendor
CVE Published:
8 February 2017

What is CVE-2017-3135?

Under some conditions when using both DNS64 and RPZ to rewrite query responses, query processing can resume in an inconsistent state leading to either an INSIST assertion failure or an attempt to read through a NULL pointer. Affects BIND 9.8.8, 9.9.3-S1 -> 9.9.9-S7, 9.9.3 -> 9.9.9-P5, 9.9.10b1, 9.10.0 -> 9.10.4-P5, 9.10.5b1, 9.11.0 -> 9.11.0-P2, 9.11.1b1.

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Affected Version(s)

BIND 9 BIND 9 9.8.8, 9.9.3-S1 -> 9.9.9-S7, 9.9.3 -> 9.9.9-P5, 9.9.10b1, 9.10.0 -> 9.10.4-P5, 9.10.5b1, 9.11.0 -> 9.11.0-P2, 9.11.1b1

References

https://security.gentoo.org/glsa/201708-01
vendor-advisoryx_refsource_GENTOO
http://rhn.redhat.com/errata/RHSA-2017-0276.html
vendor-advisoryx_refsource_REDHAT
https://security.netapp.com/advisory/ntap-20180926-0005/
x_refsource_CONFIRM

EPSS Score

34% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

ISC would like to thank Ramesh Damodaran(Infoblox) and Aliaksandr Shubnik (Infoblox) for reporting the issue and assisting us in the investigation.
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