OpenSSL 1.1.0 < 1.1.0c Multiple Vulnerabilities

high Nessus Plugin ID 94963

Synopsis

A service running on the remote host is affected by multiple vulnerabilities.

Description

According to its banner, the version of OpenSSL running on the remote host is 1.1.0 prior to 1.1.0c. It is, therefore, affected by multiple vulnerabilities :

- A NULL pointer deference flaw exists, specifically in the asn1_item_embed_d2i() function within file crypto/asn1/tasn_dec.c, when handling the ASN.1 CHOICE type, which results in a NULL value being passed to the structure callback if an attempt is made to free certain invalid encodings. An unauthenticated, remote attacker can exploit this to cause a denial of service condition.
(CVE-2016-7053)

- A heap overflow condition exists in the chacha20_poly1305_cipher() function within file crypto/evp/e_chacha20_poly1305.c when handling TLS connections using *-CHACHA20-POLY1305 cipher suites. An unauthenticated, remote attacker can exploit this to cause a denial of service condition. (CVE-2016-7054)

- A carry propagation error exists in the Broadwell-specific Montgomery multiplication procedure when handling input lengths divisible by but longer than 256 bits. This can result in transient authentication and key negotiation failures or reproducible erroneous outcomes of public-key operations with specially crafted input. An unauthenticated, remote attacker can possibly exploit this issue to compromise ECDH key negotiations that utilize Brainpool P-512 curves. (CVE-2016-7055)

Solution

Upgrade to OpenSSL version 1.1.0c or later.

See Also

https://www.openssl.org/news/secadv/20161110.txt

Plugin Details

Severity: High

ID: 94963

File Name: openssl_1_1_0c.nasl

Version: 1.11

Type: combined

Agent: windows, macosx, unix

Family: Web Servers

Published: 11/18/2016

Updated: 8/8/2023

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2016-7054

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:openssl:openssl

Required KB Items: installed_sw/OpenSSL

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/10/2016

Vulnerability Publication Date: 11/10/2016

Reference Information

CVE: CVE-2016-7053, CVE-2016-7054, CVE-2016-7055

BID: 94238, 94242, 94244