OpenSSL < 0.9.8j Signature Spoofing

medium Nessus Plugin ID 17762


The remote server is affected by a signature validation bypass vulnerability.


According to its banner, the remote server is running a version of OpenSSL that is earlier than 0.9.8j.

A remote attacker could implement a man-in-the-middle attack by forging an SSL/TLS signature using DSA and ECDSA keys which bypass validation of the certificate chain.


Upgrade to OpenSSL 0.9.8j or later.

See Also

Plugin Details

Severity: Medium

ID: 17762

File Name: openssl_0_9_8j.nasl

Version: 1.11

Type: combined

Agent: windows, macosx, unix

Family: Web Servers

Published: 1/4/2012

Updated: 8/22/2023

Supported Sensors: Nessus Agent, Nessus

Risk Information


Risk Factor: Medium

Score: 4.0


Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

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

CVSS Score Source: CVE-2008-5077

Vulnerability Information

CPE: cpe:/a:openssl:openssl

Required KB Items: installed_sw/OpenSSL

Exploit Ease: No known exploits are available

Patch Publication Date: 1/7/2009

Vulnerability Publication Date: 1/7/2009

Reference Information

CVE: CVE-2008-5077

BID: 33150

CWE: 20