OpenSSL 1.0.1 < 1.0.1q Multiple DoS

Medium Nessus Plugin ID 87221


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


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)


Upgrade to OpenSSL version 1.0.1q or later.

See Also

Plugin Details

Severity: Medium

ID: 87221

File Name: openssl_1_0_1q.nasl

Version: $Revision: 1.12 $

Type: remote

Family: Web Servers

Published: 2015/12/07

Modified: 2017/07/20

Dependencies: 57323

Risk Information

Risk Factor: Medium


Base Score: 5

Temporal Score: 3.7

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

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-2015-3194, CVE-2015-3195

BID: 78623, 78626

OSVDB: 131038, 131039