PT-2016-2766 · Openssl+11 · Openssl+14

Shi Lei · Published 2016-09-16 · Updated 2024-06-15 · CVE-2016-2181

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions OpenSSL versions prior to 1.1.0

Description The issue is related to the Anti-Replay feature in the DTLS implementation, which mishandles early use of a new epoch number in conjunction with a large sequence number. This allows remote attackers to cause a denial of service via spoofed DTLS records. The vulnerability is related to the files rec layer d1.c and ssl3 record.c.

Recommendations For versions prior to 1.1.0, update to version 1.1.0 or later to resolve the issue. As a temporary workaround, consider restricting the use of the DTLS implementation until a patch is available.

Fix

DoS

Weakness Enumeration

CWE-189

Related Identifiers

ALT-PU-2016-2005

BDU:2016-02168

CESA-2016_1940

CVE-2016-2181

DLA-637-1

DSA-3673-1

MGASA-2016-0338

MGASA-2016-0408

OPENSUSE-SU-2016_2391-1

OPENSUSE-SU-2016_2407-1

OPENSUSE-SU-2016_2537-1

OPENSUSE-SU-2018_0458-1

OPENSUSE-SU-2024:10271-1

OPENSUSE-SU-2024:11127-1

RHSA-2016:1940

RHSA-2016_1940

SUSE-FU-2022:0445-1

SUSE-SU-2016:2387-1

SUSE-SU-2016:2394-1

SUSE-SU-2016:2458-1

SUSE-SU-2016:2468-1

SUSE-SU-2016:2469-1

SUSE-SU-2017:2699-1

SUSE-SU-2017:2700-1

USN-3087-1

USN-3087-2

Affected Products

Alt Linux

Centos

Cisco Asa

Cisco Ios Xe

Cisco Nexus

Cisco Wls

Fortios

Freebsd

Huawei Vrp

Ibm Aix

Nessus

Openssl

Red Hat

Suse

Ubuntu

References · 332

• https://ubuntu.com/security/CVE-2016-6306 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2179 · Security Note
• https://ubuntu.com/security/CVE-2016-2181 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-2182 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00012.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-2181 · Security Note
• https://bdu.fstec.ru/vul/2022-02405 · Security Note
• https://security.freebsd.org/advisories/FreeBSD-SA-16:26.openssl.asc · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-02462 · Security Note
• https://bdu.fstec.ru/vul/2016-02168 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2180 · Security Note
• http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00005.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-02910 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2016-2181 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2016:2468-1 · Vendor Advisory