OpenSSL < 0.9.8s Multiple Vulnerabilities

high Nessus Plugin ID 57459

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Synopsis

The remote web server has multiple SSL-related vulnerabilities.

Description

According to its banner, the remote web server is running a version of OpenSSL older than 0.9.8s. Such versions have the following vulnerabilities :

- An error exists related to ECDSA signatures and binary curves. The implementation of curves over binary fields could allow a remote, unauthenticated attacker to determine private key material via timing attacks.
(CVE-2011-1945)

- The Datagram Transport Layer Security (DTLS) implementation is vulnerable to plaintext recovery attacks when decrypting in CBC mode. (CVE-2011-4108)

- A double-free error exists during a policy check failure if the flag 'X509_V_FLAG_POLICY_CHECK' is set.
(CVE-2011-4109)

- An error exists related to SSLv3.0 records that can lead to disclosure of uninitialized memory because the library does not clear all bytes used as block cipher padding. (CVE-2011-4576)

- An error exists related to RFC 3779 processing that can allow denial of service attacks. Note that this functionality is not enabled by default and must be configured at compile time via the 'enable-rfc3779' option. (CVE-2011-4577)

- An error exists related to handshake restarts for server gated cryptography (SGC) that can allow denial of service attacks. (CVE-2011-4619)

Solution

Upgrade to OpenSSL 0.9.8s or later.

Plugin Details

Severity: High

ID: 57459

File Name: openssl_0_9_8s.nasl

Version: 1.16

Type: combined

Agent: windows, macosx, unix

Family: Web Servers

Published: 1/9/2012

Updated: 8/22/2023

Supported Sensors: Nessus Agent

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 6.9

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

CVSS Score Source: CVE-2011-4109

Vulnerability Information

CPE: cpe:/a:openssl:openssl

Required KB Items: installed_sw/OpenSSL

Exploit Ease: No known exploits are available

Patch Publication Date: 1/4/2012

Vulnerability Publication Date: 1/4/2012

Reference Information

CVE: CVE-2011-1945, CVE-2011-4108, CVE-2011-4109, CVE-2011-4576, CVE-2011-4577, CVE-2011-4619

BID: 51281, 47888

CERT: 536044

Detections

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