CVE-2016-0747
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)
02 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)
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 8.66% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 94.9% of scored records. A rank, not a probability.
- NVD base score
- 5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2016-02-15 19:00Z10 YR AGO
- Last updated
- 2024-08-05 22:30Z2 YR AGO
- Reserved
- 2015-12-16
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-400Uncontrolled Resource ConsumptionClass
- Data version
- 5.1
- Document digest
- 1a74e9cb1b4112560a58579955436562c489a262547b57a5be7eb79d9de74ccd
05 Affected products
06 References
- lists.opensuse.orgopenSUSE-SU-2016:0371http://lists.opensuse.org/opensuse-updates/2016-02/msg00042.html
- bto.bluecoat.comhttps://bto.bluecoat.com/security-advisory/sa115
- security.gentoo.orgGLSA-201606-06https://security.gentoo.org/glsa/201606-06
- www.securitytracker.com1034869http://www.securitytracker.com/id/1034869
- mailman.nginx.org[nginx] 20160126 nginx security advisory (CVE-2016-0742, CVE-2016-0746, CVE-2016-0747)http://mailman.nginx.org/pipermail/nginx/2016-January/049700.html
- access.redhat.comRHSA-2016:1425https://access.redhat.com/errata/RHSA-2016:1425
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1302589
- www.debian.orgDSA-3473http://www.debian.org/security/2016/dsa-3473
- www.ubuntu.comUSN-2892-1http://www.ubuntu.com/usn/USN-2892-1
- support.apple.comhttps://support.apple.com/kb/HT212818
- seclists.org20210921 APPLE-SA-2021-09-20-4 Xcode 13http://seclists.org/fulldisclosure/2021/Sep/36
07 Fixed in
Debian 12
- nginx Fixed in 1.9.10-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- nginx Fixed in 1.9.10-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- nginx Fixed in 1.9.10-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- nginx Fixed in 1.4.6-1ubuntu3.4
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- nginx Fixed in 1.9.10-0ubuntu1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.