CVE-2016-0742
HighThe resolver in nginx before 1.8.1 and 1.9.x before 1.9.10 allows remote attackers to cause a denial of service (invalid pointer dereference and worker process crash) via a crafted UDP DNS response.
Published Feb 15, 2016 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2016-0742, DLA-404-1, DSA-3473-1, SUSE-SU-2016:1232-1, UBUNTU-CVE-2016-0742, USN-2892-1
Key Facts
Patch immediately- CVE-2016-0742 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting Xcode (Apple), Nginx (F5), Software Collections (Redhat) and 9 more products.
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 82% probability of exploitation in the next 30 days.
- Fixed versions are available, including Xcode 13.0, Nginx 1.8.1, Nginx 0.7.67-3+squeeze4+deb6u1.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS (30-day exploit likelihood)
82%
Higher than 99.6% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
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Description
The resolver in nginx before 1.8.1 and 1.9.x before 1.9.10 allows remote attackers to cause a denial of service (invalid pointer dereference and worker process crash) via a crafted UDP DNS response.
Affected Products
43 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| XcodeApple | See advisory | 13.0 |
| NginxF5 | See advisory | 1.8.1 |
| Software CollectionsRedhat | 1.0 | n/a |
| Ubuntu LinuxCanonical | 14.04, 15.10 | n/a |
| Debian LinuxDebian | 7.0, 8.0, 9.0 | n/a |
Patched Releases
Xcode
13.0
Nginx
1.8.1, 0.7.67-3+squeeze4+deb6u1, 1:1.8.1-1.26.amzn1, 1.11.4-2.5, 1.2.1-2.2+wheezy4, 1.4.6-1ubuntu3.4, 1.6.2-5+deb8u1, 1.8.1-5.1, 1.9.10-0ubuntu1, 1.9.10-1
GeoIP
1.4.7-2.10.1
libGeoIP1
1.4.7-2.10.1
nginx-1.0
1.0.15-0.29.2
rh-nginx18-nginx
1:1.8.1-1.el6, 1:1.8.1-1.el7
rootio-nginx
1.9.10-1
vim-plugin-nginx
1.11.4-2.5
Timeline
Publicly disclosed
Feb 15, 2016
Last updated
Aug 4, 2026
Weakness Type
- CWE-125 Out-of-bounds Read
- CWE-476 NULL Pointer Dereference
References
- advisoryopenSUSE-SU-2016:0371
- advisory[nginx] 20160126 nginx security advisory (CVE-2016-0742, CVE-2016-0746, CVE-2016-0747)
- advisoryRHSA-2016:1425
- advisoryhttps://bto.bluecoat.com/security-advisory/sa115
- advisoryhttps://bugzilla.suse.com/963775
FAQ
Common Questions.
The resolver in nginx before 1.8.1 and 1.9.x before 1.9.10 allows remote attackers to cause a denial of service (invalid pointer dereference and worker process crash) via a crafted UDP DNS response.
Affected: Xcode (Apple); Nginx (F5); Software Collections (Redhat) versions 1.0, among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Xcode 13.0, Nginx 1.8.1, Nginx 0.7.67-3+squeeze4+deb6u1.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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