REDHAT-BUG-1837604
First published: Tue May 19 2020(Updated: )
Unbound before 1.10.1 has an infinite loop via malformed DNS answers received from upstream servers. References: <a href="http://www.openwall.com/lists/oss-security/2020/05/19/5">http://www.openwall.com/lists/oss-security/2020/05/19/5</a> <a href="https://nlnetlabs.nl/downloads/unbound/CVE-2020-12662_2020-12663.txt">https://nlnetlabs.nl/downloads/unbound/CVE-2020-12662_2020-12663.txt</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| libunbound | <1.10.1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- http://www.openwall.com/lists/oss-security/2020/05/19/5
- https://nlnetlabs.nl/downloads/unbound/CVE-2020-12662_2020-12663.txt
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1837609
- https://github.com/NLnetLabs/unbound/commit/ba0f382eee814e56900a535778d13206b86b6d49
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1837604#c2
- https://github.com/NLnetLabs/unbound/commit/
- https://github.com/NLnetLabs/unbound/issues/243#issuecomment-637298509
- https://access.redhat.com/security/cve/CVE-2020-12662
- https://access.redhat.com/errata/RHSA-2020:2414
- https://access.redhat.com/errata/RHSA-2020:2416
- https://access.redhat.com/errata/RHSA-2020:2418
- https://access.redhat.com/errata/RHSA-2020:2419
- https://access.redhat.com/security/cve/cve-2020-12663
- https://access.redhat.com/errata/RHSA-2020:2640
- https://access.redhat.com/errata/RHSA-2020:4181
- https://bugzilla.redhat.com/show_bug.cgi?id=1837604
Frequently Asked Questions
What is the severity of REDHAT-BUG-1837604?
The severity of REDHAT-BUG-1837604 is considered critical due to the potential for an infinite loop from malformed DNS responses.
How do I fix REDHAT-BUG-1837604?
You can fix REDHAT-BUG-1837604 by upgrading to Unbound version 1.10.1 or later.
What are the consequences of not addressing REDHAT-BUG-1837604?
Not addressing REDHAT-BUG-1837604 may lead to a denial of service due to the endless loop caused by malicious DNS answers.
Which versions of Unbound are affected by REDHAT-BUG-1837604?
Unbound versions prior to 1.10.1 are affected by REDHAT-BUG-1837604.
How can I determine if my system is vulnerable to REDHAT-BUG-1837604?
You can determine your system's vulnerability to REDHAT-BUG-1837604 by checking the installed version of Unbound and comparing it to the known vulnerable versions.
- agent/references
- agent/type
- agent/last-modified-date
- agent/first-publish-date
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2020-12663
- agent/source
- agent/description
- agent/severity
- agent/event
- agent/softwarecombine
- agent/tags
- agent/guess-ai
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/nlnet labs
- canonical/libunbound