high
7.5
CWE
189 20
Advisory Published
CVE Published
Updated

CVE-2016-2181: Input Validation

First published: Tue Jul 05 2016(Updated: )

A flaw was found in the Datagram TLS (DTLS) replay protection implementation in OpenSSL. A remote attacker could possibly use this flaw to make a DTLS server using OpenSSL to reject further packets sent from a DTLS client over an established DTLS connection.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/openssl<0:1.0.1e-48.el6_8.3
0:1.0.1e-48.el6_8.3
redhat/openssl<1:1.0.1e-51.el7_2.7
1:1.0.1e-51.el7_2.7
redhat/openssl<1.0.1
1.0.1
redhat/openssl<1.0.2
1.0.2
OpenSSL=1.0.1
OpenSSL=1.0.1a
OpenSSL=1.0.1b
OpenSSL=1.0.1c
OpenSSL=1.0.1d
OpenSSL=1.0.1e
OpenSSL=1.0.1f
OpenSSL=1.0.1g
OpenSSL=1.0.1h
OpenSSL=1.0.1i
OpenSSL=1.0.1j
OpenSSL=1.0.1k
OpenSSL=1.0.1l
OpenSSL=1.0.1m
OpenSSL=1.0.1n
OpenSSL=1.0.1o
OpenSSL=1.0.1p
OpenSSL=1.0.1q
OpenSSL=1.0.1r
OpenSSL=1.0.1s
OpenSSL=1.0.1t
OpenSSL=1.0.2
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
OpenSSL=1.0.2h
Oracle Linux=6
Oracle Linux=7
debian/openssl
1.1.1w-0+deb11u1
1.1.1w-0+deb11u2
3.0.15-1~deb12u1
3.0.14-1~deb12u2
3.4.1-1

Remedy

https://git.openssl.org/?p=openssl.git;a=commit;h=1fb9fdc3027b27d8eb6a1e6a846435b070980770

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2016-2181?

    CVE-2016-2181 has been classified as a moderate severity vulnerability.

  • How do I fix CVE-2016-2181?

    To fix CVE-2016-2181, you should upgrade OpenSSL to a version that addresses this vulnerability, such as 1.0.1, 1.0.2, or any later versions.

  • Which versions of OpenSSL are affected by CVE-2016-2181?

    CVE-2016-2181 affects OpenSSL versions prior to 1.0.2 and specifically versions such as 1.0.1e and earlier.

  • Can CVE-2016-2181 be exploited remotely?

    Yes, CVE-2016-2181 can be exploited by a remote attacker to disrupt client-server communications.

  • What impact does CVE-2016-2181 have on system security?

    CVE-2016-2181 can lead to denial of service by causing the DTLS server to reject packets from clients, disrupting established connections.

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