Bug 1550602 (CVE-2018-5734) - CVE-2018-5734 bind: A malformed request can trigger an assertion failure in badcache.c
Summary: CVE-2018-5734 bind: A malformed request can trigger an assertion failure in b...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2018-5734
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-03-01 15:14 UTC by Adam Mariš
Modified: 2021-02-17 00:44 UTC (History)
8 users (show)

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Last Closed: 2018-03-01 15:16:28 UTC
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Description Adam Mariš 2018-03-01 15:14:03 UTC 
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.

External References:

https://kb.isc.org/article/AA-01562/
Comment 1 Adam Mariš 2018-03-01 15:14:12 UTC 
Acknowledgments:

Name: ISC
Comment 2 Adam Mariš 2018-03-01 15:16:36 UTC 
Statement:

This issue did not affect the versions of bind as shipped with Red Hat Enterprise Linux 5, 6 and 7 as they did not include the vulnerable code.
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