OpenSSL 1.0.2 < 1.0.2e Multiple Vulnerabilities

Medium Nessus Plugin ID 87222

New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.

VPR Score: 3.6

Synopsis

The remote service is affected by multiple vulnerabilities.

Description

According to its banner, the remote host is running a version of OpenSSL 1.0.2 prior to 1.0.2e. It is, therefore, affected by the following vulnerabilities :

- A flaw exists in the ssl3_get_key_exchange() function in file s3_clnt.c when handling a ServerKeyExchange message for an anonymous DH ciphersuite with the value of 'p' set to 0. A attacker can exploit this, by causing a segmentation fault, to crash an application linked against the library, resulting in a denial of service.
(CVE-2015-1794)

- A carry propagating flaw exists in the x86_64 Montgomery squaring implementation that may cause the BN_mod_exp() function to produce incorrect results. An attacker can exploit this to obtain sensitive information regarding private keys. (CVE-2015-3193)

- 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 1.0.2e or later.

See Also

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

http://www.nessus.org/u?1fc69a3d

Plugin Details

Severity: Medium

ID: 87222

File Name: openssl_1_0_2e.nasl

Version: 1.14

Type: remote

Family: Web Servers

Published: 2015/12/07

Updated: 2019/11/20

Dependencies: 57323

Risk Information

Risk Factor: Medium

VPR Score: 3.6

CVSS Score Source: CVE-2015-3193

CVSS v2.0

Base Score: 5

Temporal Score: 3.7

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:openssl:openssl

Required KB Items: openssl/port

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2015/12/03

Vulnerability Publication Date: 2015/12/03

Reference Information

CVE: CVE-2015-1794, CVE-2015-3193, CVE-2015-3194, CVE-2015-3195

BID: 78623, 78626