CVE-2011-1922
First published: Tue May 31 2011(Updated: )
daemon/worker.c in Unbound 1.x before 1.4.10, when debugging functionality and the interface-automatic option are enabled, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a crafted DNS request that triggers improper error handling.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| libunbound | =1.3.4 | |
| libunbound | =1.4.9 | |
| libunbound | =1.2.1 | |
| libunbound | =1.3.3 | |
| libunbound | =1.4.3 | |
| libunbound | =1.0.1 | |
| libunbound | =1.4.7 | |
| libunbound | =1.4.5 | |
| libunbound | =1.1.0 | |
| libunbound | =1.3.0 | |
| libunbound | =1.4.2 | |
| libunbound | =1.0.0 | |
| libunbound | =1.4.0 | |
| libunbound | =1.1.1 | |
| libunbound | =1.4.1 | |
| libunbound | =1.3.2 | |
| libunbound | =1.4.8 | |
| libunbound | =1.3.1 | |
| libunbound | =1.4.6 | |
| libunbound | =1.2.0 | |
| libunbound | =1.0.2 | |
| libunbound | =1.4.4 |
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Reference Links
- http://www.kb.cert.org/vuls/id/531342
- http://unbound.nlnetlabs.nl/downloads/CVE-2011-1922.txt
- http://www.securityfocus.com/bid/47986
- http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061243.html
- http://secunia.com/advisories/44865
- http://osvdb.org/72750
- https://exchange.xforce.ibmcloud.com/vulnerabilities/67645
Frequently Asked Questions
What is the severity of CVE-2011-1922?
CVE-2011-1922 is classified as a denial of service vulnerability, which can cause the Unbound DNS resolver to crash.
How do I fix CVE-2011-1922?
To mitigate CVE-2011-1922, upgrade to Unbound version 1.4.10 or later where the vulnerability is resolved.
What software versions are affected by CVE-2011-1922?
CVE-2011-1922 affects Unbound versions from 1.0.0 up to 1.4.9.
What type of attack does CVE-2011-1922 enable?
CVE-2011-1922 enables remote attackers to conduct denial of service attacks via crafted DNS requests.
Is CVE-2011-1922 exploitable over the internet?
Yes, CVE-2011-1922 can be exploited by remote attackers targeting vulnerable instances of the Unbound DNS resolver.
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- source/MITRE
- agent/references
- agent/last-modified-date
- agent/severity
- agent/weakness
- agent/author
- agent/description
- agent/event
- agent/first-publish-date
- agent/source
- agent/tags
- agent/softwarecombine
- collector/nvd-historical
- agent/software-canonical-lookup-request
- collector/nvd-index
- vendor/nlnetlabs
- canonical/libunbound
- version/libunbound/1.3.4
- version/libunbound/1.4.9
- version/libunbound/1.2.1
- version/libunbound/1.3.3
- version/libunbound/1.4.3
- version/libunbound/1.0.1
- version/libunbound/1.4.7
- version/libunbound/1.4.5
- version/libunbound/1.1.0
- version/libunbound/1.3.0
- version/libunbound/1.4.2
- version/libunbound/1.0.0
- version/libunbound/1.4.0
- version/libunbound/1.1.1
- version/libunbound/1.4.1
- version/libunbound/1.3.2
- version/libunbound/1.4.8
- version/libunbound/1.3.1
- version/libunbound/1.4.6
- version/libunbound/1.2.0
- version/libunbound/1.0.2
- version/libunbound/1.4.4