CVE-2011-4576
openssl: uninitialized SSL 3.0 padding
Severity Score
7.5
*CVSS v3
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
The SSL 3.0 implementation in OpenSSL before 0.9.8s and 1.x before 1.0.0f does not properly initialize data structures for block cipher padding, which might allow remote attackers to obtain sensitive information by decrypting the padding data sent by an SSL peer.
La implementación SSL v3.0 en OpenSSL antes de v0.9.8s y v1.x antes de v1.0.0f no inicializa correctamente las estructuras de datos para el relleno de bloques de cifrado, lo que podría permitir a atacantes remotos obtener información sensible descifrando los datos de rellenos enviados por uno de los extremos de la comunicación SSL.
The DTLS implementation in OpenSSL before 0.9.8s and 1.x before 1.0.0f performs a MAC check only if certain padding is valid, which makes it easier for remote attackers to recover plaintext via a padding oracle attack. Double free vulnerability in OpenSSL 0.9.8 before 0.9.8s, when X509_V_FLAG_POLICY_CHECK is enabled, allows remote attackers to have an unspecified impact by triggering failure of a policy check. The SSL 3.0 implementation in OpenSSL before 0.9.8s and 1.x before 1.0.0f does not properly initialize data structures for block cipher padding, which might allow remote attackers to obtain sensitive information by decrypting the padding data sent by an SSL peer. The Server Gated Cryptography implementation in OpenSSL before 0.9.8s and 1.x before 1.0.0f does not properly handle handshake restarts, which allows remote attackers to cause a denial of service via unspecified vectors. The GOST ENGINE in OpenSSL before 1.0.0f does not properly handle invalid parameters for the GOST block cipher, which allows remote attackers to cause a denial of service via crafted data from a TLS client. The updated packages have been patched to correct these issues.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2011-11-29 CVE Reserved
- 2012-01-04 CVE Published
- 2024-08-07 CVE Updated
- 2025-08-05 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-310: Cryptographic Issues
CAPEC
References (24)
| URL | Tag | Source |
|---|---|---|
| http://aix.software.ibm.com/aix/efixes/security/openssl_advisory3.asc | X_refsource_confirm | |
| http://secunia.com/advisories/48528 | Third Party Advisory | |
| http://secunia.com/advisories/55069 | Third Party Advisory | |
| http://secunia.com/advisories/57353 | Third Party Advisory | |
| http://support.apple.com/kb/HT5784 | X_refsource_confirm |
|
| http://www-01.ibm.com/support/docview.wss?uid=ssg1S1004564 | X_refsource_confirm | |
| http://www.kb.cert.org/vuls/id/737740 | Third Party Advisory |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | <= 0.9.8r Search vendor "Openssl" for product "Openssl" and version " <= 0.9.8r" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.1c Search vendor "Openssl" for product "Openssl" and version "0.9.1c" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.2b Search vendor "Openssl" for product "Openssl" and version "0.9.2b" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.4 Search vendor "Openssl" for product "Openssl" and version "0.9.4" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.5 Search vendor "Openssl" for product "Openssl" and version "0.9.5" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.5a Search vendor "Openssl" for product "Openssl" and version "0.9.5a" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.6 Search vendor "Openssl" for product "Openssl" and version "0.9.6" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.6a Search vendor "Openssl" for product "Openssl" and version "0.9.6a" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.6b Search vendor "Openssl" for product "Openssl" and version "0.9.6b" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.6c Search vendor "Openssl" for product "Openssl" and version "0.9.6c" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.6d Search vendor "Openssl" for product "Openssl" and version "0.9.6d" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.6e Search vendor "Openssl" for product "Openssl" and version "0.9.6e" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.6f Search vendor "Openssl" for product "Openssl" and version "0.9.6f" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.6g Search vendor "Openssl" for product "Openssl" and version "0.9.6g" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.6h Search vendor "Openssl" for product "Openssl" and version "0.9.6h" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.6h Search vendor "Openssl" for product "Openssl" and version "0.9.6h" | bogus |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.6i Search vendor "Openssl" for product "Openssl" and version "0.9.6i" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.6j Search vendor "Openssl" for product "Openssl" and version "0.9.6j" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.6k Search vendor "Openssl" for product "Openssl" and version "0.9.6k" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.6l Search vendor "Openssl" for product "Openssl" and version "0.9.6l" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.6m Search vendor "Openssl" for product "Openssl" and version "0.9.6m" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.7 Search vendor "Openssl" for product "Openssl" and version "0.9.7" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.7a Search vendor "Openssl" for product "Openssl" and version "0.9.7a" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.7b Search vendor "Openssl" for product "Openssl" and version "0.9.7b" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.7c Search vendor "Openssl" for product "Openssl" and version "0.9.7c" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.7d Search vendor "Openssl" for product "Openssl" and version "0.9.7d" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.7e Search vendor "Openssl" for product "Openssl" and version "0.9.7e" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.7f Search vendor "Openssl" for product "Openssl" and version "0.9.7f" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.7g Search vendor "Openssl" for product "Openssl" and version "0.9.7g" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.7h Search vendor "Openssl" for product "Openssl" and version "0.9.7h" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.7i Search vendor "Openssl" for product "Openssl" and version "0.9.7i" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.7j Search vendor "Openssl" for product "Openssl" and version "0.9.7j" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.7k Search vendor "Openssl" for product "Openssl" and version "0.9.7k" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.7l Search vendor "Openssl" for product "Openssl" and version "0.9.7l" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.7m Search vendor "Openssl" for product "Openssl" and version "0.9.7m" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.8 Search vendor "Openssl" for product "Openssl" and version "0.9.8" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.8a Search vendor "Openssl" for product "Openssl" and version "0.9.8a" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.8b Search vendor "Openssl" for product "Openssl" and version "0.9.8b" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.8c Search vendor "Openssl" for product "Openssl" and version "0.9.8c" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.8d Search vendor "Openssl" for product "Openssl" and version "0.9.8d" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.8e Search vendor "Openssl" for product "Openssl" and version "0.9.8e" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.8f Search vendor "Openssl" for product "Openssl" and version "0.9.8f" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.8g Search vendor "Openssl" for product "Openssl" and version "0.9.8g" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.8h Search vendor "Openssl" for product "Openssl" and version "0.9.8h" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.8i Search vendor "Openssl" for product "Openssl" and version "0.9.8i" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.8j Search vendor "Openssl" for product "Openssl" and version "0.9.8j" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.8k Search vendor "Openssl" for product "Openssl" and version "0.9.8k" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.8l Search vendor "Openssl" for product "Openssl" and version "0.9.8l" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.8m Search vendor "Openssl" for product "Openssl" and version "0.9.8m" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.8n Search vendor "Openssl" for product "Openssl" and version "0.9.8n" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.8o Search vendor "Openssl" for product "Openssl" and version "0.9.8o" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.8p Search vendor "Openssl" for product "Openssl" and version "0.9.8p" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 0.9.8q Search vendor "Openssl" for product "Openssl" and version "0.9.8q" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | <= 1.0.0e Search vendor "Openssl" for product "Openssl" and version " <= 1.0.0e" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.0 Search vendor "Openssl" for product "Openssl" and version "1.0.0" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.0 Search vendor "Openssl" for product "Openssl" and version "1.0.0" | beta1 |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.0 Search vendor "Openssl" for product "Openssl" and version "1.0.0" | beta2 |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.0 Search vendor "Openssl" for product "Openssl" and version "1.0.0" | beta3 |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.0 Search vendor "Openssl" for product "Openssl" and version "1.0.0" | beta4 |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.0 Search vendor "Openssl" for product "Openssl" and version "1.0.0" | beta5 |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.0a Search vendor "Openssl" for product "Openssl" and version "1.0.0a" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.0b Search vendor "Openssl" for product "Openssl" and version "1.0.0b" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.0c Search vendor "Openssl" for product "Openssl" and version "1.0.0c" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | 1.0.0d Search vendor "Openssl" for product "Openssl" and version "1.0.0d" | - |
Affected
| ||||||