Use of a Broken or Risky Cryptographic Algorithm Affecting openssl package, versions <1.1.1d-2ubuntu1


Severity

0.0
low
0
10

    Threat Intelligence

    EPSS
    1.51% (88th percentile)

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  • Snyk ID SNYK-UBUNTU2110-OPENSSL-1747816
  • published 11 Sep 2019
  • disclosed 10 Sep 2019

How to fix?

Upgrade Ubuntu:21.10 openssl to version 1.1.1d-2ubuntu1 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 Ubuntu. See How to fix? for Ubuntu:21.10 relevant fixed versions and status.

In situations where an attacker receives automated notification of the success or failure of a decryption attempt an attacker, after sending a very large number of messages to be decrypted, can recover a CMS/PKCS7 transported encryption key or decrypt any RSA encrypted message that was encrypted with the public RSA key, using a Bleichenbacher padding oracle attack. Applications are not affected if they use a certificate together with the private RSA key to the CMS_decrypt or PKCS7_decrypt functions to select the correct recipient info to decrypt. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c). Fixed in OpenSSL 1.1.0l (Affected 1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s).

References

CVSS Scores

version 3.1
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Snyk

3.7 low
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    Low
  • Integrity (I)
    None
  • Availability (A)
    None
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NVD

3.7 low
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SUSE

5.3 medium
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Red Hat

3.7 low