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Amazon Linux AMI: CVE-2018-0732: Security patch for openssl (ALAS-2018-1098)

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Amazon Linux AMI: CVE-2018-0732: Security patch for openssl (ALAS-2018-1098)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
06/12/2018
Created
03/19/2019
Added
11/02/2018
Modified
10/14/2022

Description

During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack. Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h). Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o).

Solution(s)

  • amazon-linux-upgrade-openssl

References

  • ALAS-2018-1098
  • USN-3692-1
  • USN-3692-2
  • DSA-4348
  • DSA-4355
  • CVE-2018-0732

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