Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2011-1473

Severity CVSS v4.0:
Pending analysis
Type:
CWE-264 Permissions, Privileges, and Access Control
Publication date:
16/06/2012
Last modified:
11/04/2025

Description

OpenSSL before 0.9.8l, and 0.9.8m through 1.x, does not properly restrict client-initiated renegotiation within the SSL and TLS protocols, which might make it easier for remote attackers to cause a denial of service (CPU consumption) by performing many renegotiations within a single connection, a different vulnerability than CVE-2011-5094. NOTE: it can also be argued that it is the responsibility of server deployments, not a security library, to prevent or limit renegotiation when it is inappropriate within a specific environment

Impact

Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:openssl:openssl:0.9.8m:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:0.9.8m:beta1:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:0.9.8n:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:0.9.8o:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:0.9.8p:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:0.9.8r:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:0.9.8s:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:0.9.8t:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:0.9.8u:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:0.9.8v:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:0.9.8w:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:0.9.8x:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* 0.9.8k (including)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools