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.
Metrics
Affected Vendors & Products
Advisories
Source | ID | Title |
---|---|---|
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EUVD-2018-17503 | 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. |
Fixes
Solution
Upgrade to the patched release. No publicly released versions of BIND are affected BIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers. BIND 9 version 9.10.6-S3
Workaround
Disabling the SERVFAIL cache with 'servfail-ttl 0;' will prevent taking the code path that leads to the assertion failure.
References
History
No history.

Status: PUBLISHED
Assigner: isc
Published:
Updated: 2024-09-17T02:31:46.321Z
Reserved: 2018-01-17T00:00:00
Link: CVE-2018-5734

No data.

Status : Modified
Published: 2019-01-16T20:29:00.800
Modified: 2024-11-21T04:09:16.740
Link: CVE-2018-5734


No data.