OpenSSL 1.0.1 < 1.0.1c TLS/DTLS CBC Denial of Service

medium Nessus Plugin ID 59078


The remote host may be affected by a denial of service vulnerability.


According to its banner, the remote web server is running a version of OpenSSL 1.0.1 earlier than 1.0.1c. As such, the OpenSSL library itself is reportedly affected by a denial of service vulnerability.

An integer underflow error exists in the file 'ssl/d1_enc.c' in the function 'dtls1_enc'. When in CBC mode, TLS/DTLS record length values and explicit initialization vector length values related to TLS/DTLS packets are not handled properly, which can lead to memory corruption and application crashes.


Upgrade to OpenSSL 1.0.1c or later.

See Also

Plugin Details

Severity: Medium

ID: 59078

File Name: openssl_1_0_1c.nasl

Version: 1.9

Type: combined

Agent: windows, macosx, unix

Family: Web Servers

Published: 5/11/2012

Updated: 8/21/2023

Supported Sensors: Nessus Agent

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2012-2333

Vulnerability Information

CPE: cpe:/a:openssl:openssl

Required KB Items: installed_sw/OpenSSL

Exploit Ease: No known exploits are available

Patch Publication Date: 5/10/2012

Vulnerability Publication Date: 5/10/2012

Reference Information

CVE: CVE-2012-2333

BID: 53476