Vulnerability Details : CVE-2020-1968

The Raccoon attack exploits a flaw in the TLS specification which can lead to an attacker being able to compute the pre-master secret in connections which have used a Diffie-Hellman (DH) based ciphersuite. In such a case this would result in the attacker being able to eavesdrop on all encrypted communications sent over that TLS connection. The attack can only be exploited if an implementation re-uses a DH secret across multiple TLS connections. Note that this issue only impacts DH ciphersuites and not ECDH ciphersuites. This issue affects OpenSSL 1.0.2 which is out of support and no longer receiving public updates. OpenSSL 1.1.1 is not vulnerable to this issue. Fixed in OpenSSL 1.0.2w (Affected 1.0.2-1.0.2v).
Published 2020-09-09 14:15:13
Updated 2022-11-21 19:48:16
Source OpenSSL Software Foundation
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2020-1968

Probability of exploitation activity in the next 30 days: 0.37%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 70 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2020-1968

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Source
4.3
 MEDIUM AV:N/AC:M/Au:N/C:P/I:N/A:N
8.6
2.9
 nvd@nist.gov
3.7
 LOW CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
2.2
1.4
 nvd@nist.gov

CWE ids for CVE-2020-1968

  • The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-1968

Products affected by CVE-2020-1968

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