A malformed request can trigger an assertion failure in badcache.c
CVE-2018-5734

7.5HIGH

Key Information:

Vendor

Isc
Status
Bind 9
Vendor
CVE Published:
16 January 2019

What is CVE-2018-5734?

While handling a particular type of malformed packet BIND erroneously selects a SERVFAIL rcode instead of a FORMERR rcode. If the receiving view has the SERVFAIL cache feature enabled, this can trigger an assertion failure in badcache.c when the request doesn't contain all of the expected information. Affects BIND 9.10.5-S1 to 9.10.5-S4, 9.10.6-S1, 9.10.6-S2.

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Deploy the Patch

Affected Version(s)

BIND 9 9.10.5-S1 to 9.10.5-S4, 9.10.6-S1, 9.10.6-S2

References

https://kb.isc.org/docs/aa-01562
x_refsource_CONFIRM
https://security.netapp.com/advisory/ntap-20180926-0005/
x_refsource_CONFIRM
http://www.securityfocus.com/bid/103189
vdb-entryx_refsource_BID

EPSS Score

6% 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

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