Bug 2239661 (CVE-2023-4236) - CVE-2023-4236 bind: an assertion failure may lead to DoS
Summary: CVE-2023-4236 bind: an assertion failure may lead to DoS
Keywords:
Status: NEW
Alias: CVE-2023-4236
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2239877 2239878
Blocks: 2239616
TreeView+ depends on / blocked
 
Reported: 2023-09-19 16:17 UTC by Marian Rehak
Modified: 2023-09-20 15:18 UTC (History)
1 user (show)

Fixed In Version: bind 9.18.19, bind 9.18.19-S1
Doc Type: ---
Doc Text:
A flaw was found in the Bind package. The networking code handling DNS-over-TLS queries may cause named to terminate unexpectedly due to an assertion failure. This happens when internal data structures are incorrectly reused under significant DNS-over-TLS query load. A named instance vulnerable to this flaw may terminate unexpectedly when subjected to significant DNS-over-TLS query load.
Clone Of:
Environment:
Last Closed:
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Description Marian Rehak 2023-09-19 16:17:29 UTC 
A flaw was found in the Bind package. The networking code handling DNS-over-TLS queries may cause named to terminate unexpectedly due to an assertion failure. This happens when internal data structures are incorrectly reused under significant DNS-over-TLS query load. A named instance vulnerable to this flaw may terminate unexpectedly when subjected to significant DNS-over-TLS query load.
Comment 1 Marian Rehak 2023-09-20 15:17:28 UTC 
Public via https://kb.isc.org/docs/cve-2023-4236
Comment 2 Marian Rehak 2023-09-20 15:18:30 UTC 
Created bind tracking bugs for this issue:

Affects: fedora-37 [bug 2239877]
Affects: fedora-38 [bug 2239878]
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