CVE-2016-0747

Description

The resolver in nginx before 1.8.1 and 1.9.x before 1.9.10 does not properly limit CNAME resolution, which allows remote attackers to cause a denial of service (worker process resource consumption) via vectors related to arbitrary name resolution.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 27.70% Top 5%
Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory nginx.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://lists.opensuse.org/opensuse-updates/2016-02/msg00042.html mailing list third party advisory vendor advisory
https://bto.bluecoat.com/security-advisory/sa115 third party advisory
https://security.gentoo.org/glsa/201606-06 third party advisory vendor advisory
http://www.securitytracker.com/id/1034869 vdb entry third party advisory
http://mailman.nginx.org/pipermail/nginx/2016-January/049700.html mailing list vendor advisory
https://access.redhat.com/errata/RHSA-2016:1425 third party advisory vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1302589 issue tracking third party advisory patch
http://www.debian.org/security/2016/dsa-3473 third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-2892-1 third party advisory vendor advisory
https://support.apple.com/kb/HT212818 third party advisory
http://seclists.org/fulldisclosure/2021/Sep/36 third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2016-0747?
CVE-2016-0747 has been scored as a medium severity vulnerability.
How to fix CVE-2016-0747?
To fix CVE-2016-0747, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-0747 being actively exploited in the wild?
It is possible that CVE-2016-0747 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~28% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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