// For flags

CVE-2011-1945

Gentoo Linux Security Advisory 201312-03

Severity Score

5.9
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The elliptic curve cryptography (ECC) subsystem in OpenSSL 1.0.0d and earlier, when the Elliptic Curve Digital Signature Algorithm (ECDSA) is used for the ECDHE_ECDSA cipher suite, does not properly implement curves over binary fields, which makes it easier for context-dependent attackers to determine private keys via a timing attack and a lattice calculation.

El subsistema de criptografía de curva elíptica (ECC) de OpenSSL v1.0.0d y versiones anteriores, cuando el algoritmo de firma digital de la curva elímptica(ECDSA) se utiliza para el conjunto de cifrado ECDHE_ECDSA, no aplica adecuadamente las curvas sobre campos binarios, lo que hace que sea más fácil para el atacantes dependientes del contexto determinar las claves privadas a través de un ataque de oportunidad y un cálculo del entramado (lattice).

The elliptic curve cryptography subsystem in OpenSSL 1.0.0d and earlier, when the Elliptic Curve Digital Signature Algorithm is used for the ECDHE_ECDSA cipher suite, does not properly implement curves over binary fields, which makes it easier for context-dependent attackers to determine private keys via a timing attack and a lattice calculation. crypto/x509/x509_vfy.c in OpenSSL 1.0.x before 1.0.0e does not initialize certain structure members, which makes it easier for remote attackers to bypass CRL validation by using a nextUpdate value corresponding to a time in the past. The ephemeral ECDH ciphersuite functionality in OpenSSL 0.9.8 through 0.9.8s and 1.0.x before 1.0.0e does not ensure thread safety during processing of handshake messages, which allows remote attackers to cause a denial of service via out-of-order messages that violate the TLS protocol.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
High
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2011-05-09 CVE Reserved
  • 2011-05-31 CVE Published
  • 2024-08-06 CVE Updated
  • 2024-08-06 First Exploit
  • 2025-06-22 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-310: Cryptographic Issues
CAPEC
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"
<= 1.0.0d
Search vendor "Openssl" for product "Openssl" and version " <= 1.0.0d"
-
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"
0.9.3
Search vendor "Openssl" for product "Openssl" and version "0.9.3"
-
Affected
Openssl
Search vendor "Openssl"
Openssl
Search vendor "Openssl" for product "Openssl"
0.9.3a
Search vendor "Openssl" for product "Openssl" and version "0.9.3a"
-
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"
0.9.5
Search vendor "Openssl" for product "Openssl" and version "0.9.5"
beta1
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"
beta2
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"
0.9.5a
Search vendor "Openssl" for product "Openssl" and version "0.9.5a"
beta1
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"
beta2
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"
0.9.6
Search vendor "Openssl" for product "Openssl" and version "0.9.6"
beta1
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"
beta2
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"
beta3
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"
0.9.6a
Search vendor "Openssl" for product "Openssl" and version "0.9.6a"
beta1
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"
beta2
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"
beta3
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"
0.9.6i
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"
0.9.7
Search vendor "Openssl" for product "Openssl" and version "0.9.7"
beta1
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"
beta2
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"
beta3
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"
beta4
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"
beta5
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"
beta6
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"
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