OpenSSL < 0.9.8j Signature Spoofing

medium Nessus Plugin ID 17762
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Synopsis

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

Description

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.

Solution

Upgrade to OpenSSL 0.9.8j or later.

See Also

https://www.us-cert.gov/ncas/alerts/TA09-133A

Plugin Details

Severity: Medium

ID: 17762

File Name: openssl_0_9_8j.nasl

Version: 1.9

Type: remote

Family: Web Servers

Published: 1/4/2012

Updated: 11/15/2018

Dependencies: openssl_version.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 4

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

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

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:openssl:openssl

Required KB Items: openssl/port

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