CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
98.6%
Issue Overview:
It was discovered that nginx could perform an out of bound read and dereference an invalid pointer when resolving CNAME DNS records. An attacker able to manipulate DNS responses received by nginx could use this flaw to cause a worker process to crash if nginx enabled the resolver in its configuration. (CVE-2016-0742)
A use-after-free flaw was found in the way nginx resolved certain CNAME DNS records. An attacker able to manipulate DNS responses received by nginx could use this flaw to cause a worker process to crash or, possibly, execute arbitrary code if nginx enabled the resolver in its configuration. (CVE-2016-0746)
It was discovered that nginx did not limit recursion when resolving CNAME DNS records. An attacker able to manipulate DNS responses received by nginx could use this flaw to cause a worker process to use an excessive amount of resources if nginx enabled the resolver in its configuration. (CVE-2016-0747)
Affected Packages:
nginx
Issue Correction:
Run yum update nginx to update your system.
New Packages:
i686:
nginx-1.8.1-1.26.amzn1.i686
nginx-debuginfo-1.8.1-1.26.amzn1.i686
src:
nginx-1.8.1-1.26.amzn1.src
x86_64:
nginx-debuginfo-1.8.1-1.26.amzn1.x86_64
nginx-1.8.1-1.26.amzn1.x86_64
Red Hat: CVE-2016-0742, CVE-2016-0746, CVE-2016-0747
Mitre: CVE-2016-0742, CVE-2016-0746, CVE-2016-0747
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Amazon Linux | 1 | i686 | nginx | < 1.8.1-1.26.amzn1 | nginx-1.8.1-1.26.amzn1.i686.rpm |
Amazon Linux | 1 | i686 | nginx-debuginfo | < 1.8.1-1.26.amzn1 | nginx-debuginfo-1.8.1-1.26.amzn1.i686.rpm |
Amazon Linux | 1 | x86_64 | nginx-debuginfo | < 1.8.1-1.26.amzn1 | nginx-debuginfo-1.8.1-1.26.amzn1.x86_64.rpm |
Amazon Linux | 1 | x86_64 | nginx | < 1.8.1-1.26.amzn1 | nginx-1.8.1-1.26.amzn1.x86_64.rpm |
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
98.6%