CVE-2015-8899: Input Validation
First published: Thu Jun 30 2016(Updated: )
Dnsmasq before 2.76 allows remote servers to cause a denial of service (crash) via a reply with an empty DNS address that has an (1) A or (2) AAAA record defined locally.
Credit: security@ubuntu.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Ubuntu | =15.10 | |
| Ubuntu | =16.04 | |
| Dnsmasq | <=2.75 |
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Reference Links
- http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2016q2/010479.html
- http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2016q2/010505.html
- http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=41a8d9e99be9f2cc8b02051dd322cb45e0faac87
- http://www.openwall.com/lists/oss-security/2016/06/03/7
- http://www.openwall.com/lists/oss-security/2016/06/04/2
- http://www.securityfocus.com/bid/91031
- http://www.securitytracker.com/id/1036045
- http://www.ubuntu.com/usn/USN-3009-1
- http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=41a8d9e99be9f2cc8b02051dd322cb45e0faac87
Frequently Asked Questions
What is the severity of CVE-2015-8899?
CVE-2015-8899 has a severity rating of medium due to its ability to cause denial of service.
How do I fix CVE-2015-8899?
To fix CVE-2015-8899, upgrade dnsmasq to version 2.76 or later.
What types of systems are affected by CVE-2015-8899?
CVE-2015-8899 affects dnsmasq versions up to 2.75 and Ubuntu Linux versions 15.10 and 16.04 LTS.
What impact does CVE-2015-8899 have on my system?
CVE-2015-8899 can cause your dnsmasq service to crash, resulting in a denial of service.
Is CVE-2015-8899 exploitable remotely?
Yes, CVE-2015-8899 can be exploited by remote servers sending specific DNS replies.
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/severity
- agent/weakness
- agent/references
- agent/last-modified-date
- agent/first-publish-date
- agent/description
- agent/event
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/canonical
- canonical/ubuntu
- version/ubuntu/15.10
- version/ubuntu/16.04
- vendor/thekelleys
- canonical/dnsmasq
- version/dnsmasq/2.75