Improper fetch cleanup sequencing in the resolver can cause named to crash
CVE-2017-3145

7.5HIGH

Key Information:

Vendor

Isc
Status
Bind 9
Vendor
CVE Published:
16 January 2019

What is CVE-2017-3145?

BIND was improperly sequencing cleanup operations on upstream recursion fetch contexts, leading in some cases to a use-after-free error that can trigger an assertion failure and crash in named. Affects BIND 9.0.0 to 9.8.x, 9.9.0 to 9.9.11, 9.10.0 to 9.10.6, 9.11.0 to 9.11.2, 9.9.3-S1 to 9.9.11-S1, 9.10.5-S1 to 9.10.6-S1, 9.12.0a1 to 9.12.0rc1.

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Affected Version(s)

BIND 9 9.0.0 to 9.8.x, 9.9.0 to 9.9.11, 9.10.0 to 9.10.6, 9.11.0 to 9.11.2, 9.9.3-S1 to 9.9.11-S1, 9.10.5-S1 to 9.10.6-S1, 9.12.0a1 to 9.12.0rc1

References

https://access.redhat.com/errata/RHSA-2018:0102
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2018:0487
vendor-advisoryx_refsource_REDHAT
https://www.debian.org/security/2018/dsa-4089
vendor-advisoryx_refsource_DEBIAN

EPSS Score

10% 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 Jayachandran Palanisamy of Cygate AB for making us aware of this vulnerability.
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