OpenSSL 1.0.2i CRL Handling NULL Pointer Dereference DoS

Medium Nessus Plugin ID 93786


The remote service is affected by a denial of service vulnerability.


According to its banner, the remote host is running OpenSSL version 1.0.2i. It is, therefore, affected by a denial of service vulnerability in x509_vfy.c due to improper handling of certificate revocation lists (CRLs). An unauthenticated, remote attacker can exploit this, via a specially crafted CRL, to cause a NULL pointer dereference, resulting in a crash of the service.


Upgrade to OpenSSL version 1.0.2j or later.

See Also

Plugin Details

Severity: Medium

ID: 93786

File Name: openssl_1_0_2j.nasl

Version: $Revision: 1.5 $

Type: remote

Family: Web Servers

Published: 2016/09/28

Modified: 2016/12/07

Dependencies: 57323

Risk Information

Risk Factor: Medium


Base Score: 5

Temporal Score: 4.1

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

Temporal Vector: CVSS2#E:F/RL:OF/RC:ND


Base Score: 7.5

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

Vulnerability Information

CPE: cpe:/a:openssl:openssl

Required KB Items: openssl/port

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2016/09/26

Vulnerability Publication Date: 2016/09/26

Reference Information

CVE: CVE-2016-7052

BID: 93171

OSVDB: 144804