Detections
Analytics
OpenSSL < 0.9.8h Multiple Vulnerabilities
low Nessus Network Monitor Plugin ID 4521
Synopsis
The remote host is vulnerable to multiple attack vectors.Description
Versions of OpenSSL earlier than 0.9.8h are potentially affected by multiple vulnerabilities :- A double-free error exists related to the handling of server name extension data and specially crafted TLS 1.0 'Client Hello' packets. This can cause application crashes. Note that successful exploitation requires that OpenSSL is compiled with the TLS server name extensions. (CVE-2008-0891)
- A NULL pointer dereference error exists related to anonymous Diffie-Hellman key exchange and TLS handshakes. This can be exploited by omitting the 'Server Key exchange message' from the handshake and can cause application crashes. (CVE-2008-1672)
- On 32-bit builds, an information disclosure vulnerability exists during certain calculations for NIST elliptic curves P-256 or P-384. This error can allow an attacker to recover the private key of the TLS server.
The following are required for exploitation :
- 32-bit build
- Use of elliptic curves P-256 and/or P-384
- Either the use of ECDH family ciphers and/or the use of ECDHE family ciphers without the SSL_OP_SINGLE_ECDH_USE context option. (CVE-2011-4354)
Solution
Upgrade to version 0.9.8h or later.See Also
http://www.securityfocus.com/advisories/14754
http://lwn.net/Articles/284108
Plugin Details
Severity: Low
ID: 4521
Family: Web Servers
Published: 12/2/2011
Updated: 3/6/2019
Nessus ID: 56996
Risk Information
VPR
Risk Factor: Medium
Score: 5.5
CVSS v2
Risk Factor: Medium
Base Score: 4.3
Temporal Score: 3.2
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N
CVSS v3
Risk Factor: Low
Base Score: 3.7
Temporal Score: 3.2
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/a:openssl:openssl
Patch Publication Date: 5/28/2008
Vulnerability Publication Date: 5/28/2008