high
7.8
CWE
399 20
Advisory Published
CVE Published
Updated

CVE-2016-2109: Input Validation

First published: Sat Apr 23 2016(Updated: )

A denial of service flaw was found in the way OpenSSL parsed certain ASN.1-encoded data from BIO (OpenSSL's I/O abstraction) inputs. An application using OpenSSL that accepts untrusted ASN.1 BIO input could be forced to allocate an excessive amount of data.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/openssl<1.0.1
1.0.1
redhat/openssl<1.0.2
1.0.2
redhat/openssl<0:1.0.1e-48.el6_8.1
0:1.0.1e-48.el6_8.1
redhat/openssl<0:1.0.1e-42.el6_7.5
0:1.0.1e-42.el6_7.5
redhat/openssl<1:1.0.1e-51.el7_2.5
1:1.0.1e-51.el7_2.5
Android
OpenSSL<=1.0.1s
OpenSSL=1.0.2
OpenSSL=1.0.2-beta1
OpenSSL=1.0.2-beta2
OpenSSL=1.0.2-beta3
OpenSSL=1.0.2a
OpenSSL=1.0.2b
OpenSSL=1.0.2c
OpenSSL=1.0.2d
OpenSSL=1.0.2e
OpenSSL=1.0.2f
OpenSSL=1.0.2g
Red Hat Enterprise Linux Desktop=7.0
Red Hat Enterprise Linux HPC Node=7.0
Red Hat Enterprise Linux HPC Node=7.2
Red Hat Enterprise Linux Server=7.0
Red Hat Enterprise Linux Server=7.2
Red Hat Enterprise Linux Server=7.2
Red Hat Enterprise Linux Workstation=7.0
Red Hat Enterprise Linux Desktop=6.0
Red Hat Enterprise Linux HPC Node=6.0
Red Hat Enterprise Linux Server=6.0
Red Hat Enterprise Linux Workstation=6.0

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2016-2109?

    CVE-2016-2109 is classified as a denial of service vulnerability that can cause applications using OpenSSL to allocate excessive resources.

  • How do I fix CVE-2016-2109?

    To fix CVE-2016-2109, upgrade OpenSSL to version 1.0.1s or 1.0.2 and higher where available.

  • What versions of OpenSSL are affected by CVE-2016-2109?

    Versions of OpenSSL prior to 1.0.1s and including 1.0.1 and 1.0.2 are affected by CVE-2016-2109.

  • Is there a patch available for CVE-2016-2109?

    Yes, patches that address CVE-2016-2109 are available through major distributions or directly from OpenSSL's source.

  • Can CVE-2016-2109 be exploited remotely?

    Yes, CVE-2016-2109 can be exploited remotely if an application using OpenSSL accepts untrusted ASN.1 BIO input.

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