Use of a Broken or Risky Cryptographic Algorithm Affecting openssl11-devel package, versions <1:1.1.1c-15.amzn2.0.1


Severity

Recommended
medium

Based on Amazon Linux security rating

    Threat Intelligence

    EPSS
    1.51% (88th percentile)

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  • Snyk ID SNYK-AMZN2-OPENSSL11DEVEL-1681174
  • published 27 Sep 2021
  • disclosed 10 Sep 2019

How to fix?

Upgrade Amazon-Linux:2 openssl11-devel to version 1:1.1.1c-15.amzn2.0.1 or higher.
This issue was patched in ALAS2-2020-1456.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl11-devel package and not the openssl11-devel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 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
Expand this section

NVD

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