OpenSSL 1.0.1 < 1.0.1q Multiple DoS

medium Nessus Plugin ID 87221
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VPR Score: 3.6

Synopsis

The remote service is affected by multiple denial of service vulnerabilities.

Description

According to its banner, the remote host is running a version of OpenSSL 1.0.1 prior to 1.0.1q. It is, therefore, affected by the following vulnerabilities :

- A NULL pointer dereference flaw exists in file rsa_ameth.c when handling ASN.1 signatures that use the RSA PSS algorithm but are missing a mask generation function parameter. A remote attacker can exploit this to cause the signature verification routine to crash, leading to a denial of service. (CVE-2015-3194)

- A flaw exists in the ASN1_TFLG_COMBINE implementation in file tasn_dec.c related to handling malformed X509_ATTRIBUTE structures. A remote attacker can exploit this to cause a memory leak by triggering a decoding failure in a PKCS#7 or CMS application, resulting in a denial of service. (CVE-2015-3195)

Solution

Upgrade to OpenSSL version 1.0.1q or later.

See Also

https://www.openssl.org/news/secadv/20151203.txt

Plugin Details

Severity: Medium

ID: 87221

File Name: openssl_1_0_1q.nasl

Version: 1.15

Type: remote

Family: Web Servers

Published: 12/7/2015

Updated: 11/22/2019

Dependencies: openssl_version.nasl

Risk Information

Risk Factor: Medium

VPR Score: 3.6

CVSS Score Source: CVE-2015-3195

CVSS v2.0

Base Score: 5

Temporal Score: 3.7

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

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

CVSS v3.0

Base Score: 5.3

Temporal Score: 4.6

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

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

Vulnerability Information

CPE: cpe:/a:openssl:openssl

Required KB Items: openssl/port

Exploit Ease: No known exploits are available

Patch Publication Date: 12/3/2015

Vulnerability Publication Date: 12/3/2015

Reference Information

CVE: CVE-2015-3194, CVE-2015-3195

BID: 78623, 78626