Information Exposure Affecting openssl package, versions <1.1.0c-1


Severity

Recommended
0.0
low
0
10

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Threat Intelligence

EPSS
0.56% (79th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-OPENSSL-610273
  • published10 Sept 2020
  • disclosed9 Sept 2020

Introduced: 9 Sep 2020

CVE-2020-1968  (opens in a new tab)
CWE-203  (opens in a new tab)

How to fix?

Upgrade Debian:unstable openssl to version 1.1.0c-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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).

CVSS Scores

version 3.1