CVE Catalog

CVE-2016-2181

High
Published: Translated: NVD NIST

Summary

The Anti-Replay feature in the DTLS implementation in OpenSSL before 1.1.0 mishandles early use of a new epoch number in conjunction with a large sequence number, allowing remote attackers to cause a denial of service via spoofed DTLS records.

Risk Assessment

Attackers can cause false-positive packet drops, leading to service disruption and unavailability of applications using DTLS.

Recommendation

It is recommended to upgrade OpenSSL to version 1.1.0 or later to mitigate this vulnerability.

Related vulnerabilities

Original NVD description (English source)

The Anti-Replay feature in the DTLS implementation in OpenSSL before 1.1.0 mishandles early use of a new epoch number in conjunction with a large sequence number, which allows remote attackers to cause a denial of service (false-positive packet drops) via spoofed DTLS records, related to rec_layer_d1.c and ssl3_record.c.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS