CVE-2018-5745 - Use of a Broken or Risky Cryptographic Algorithm

Severity

49%

Complexity

12%

Confidentiality

60%

"managed-keys" is a feature which allows a BIND resolver to automatically maintain the keys used by trust anchors which operators configure for use in DNSSEC validation. Due to an error in the managed-keys feature it is possible for a BIND server which uses managed-keys to exit due to an assertion failure if, during key rollover, a trust anchor's keys are replaced with keys which use an unsupported algorithm. Versions affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.9.3-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5745.

"managed-keys" is a feature which allows a BIND resolver to automatically maintain the keys used by trust anchors which operators configure for use in DNSSEC validation. Due to an error in the managed-keys feature it is possible for a BIND server which uses managed-keys to exit due to an assertion failure if, during key rollover, a trust anchor's keys are replaced with keys which use an unsupported algorithm. Versions affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.9.3-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5745.

CVSS 3.1 Base Score 4.9. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

CVSS 2.0 Base Score 3.5. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:S/C:N/I:N/A:P).

Demo Examples

Use of a Broken or Risky Cryptographic Algorithm

CWE-327

These code examples use the Data Encryption Standard (DES).


               
EVP_des_ecb();

               
des.initEncrypt(key2);

               
}
return $encryptedPassword;

Once considered a strong algorithm, DES now regarded as insufficient for many applications. It has been replaced by Advanced Encryption Standard (AES).

Overview

First reported 5 years ago

2019-10-09 16:15:00

Last updated 5 years ago

2019-11-06 01:15:00

Affected Software

ISC BIND

ISC BIND 9.9.3 S1 for Supported Preview

9.9.3
supported_preview

ISC BIND 9.10.7

9.10.7

ISC BIND 9.10.8 Patch 1

9.10.8

ISC BIND 9.11.5

9.11.5

ISC BIND 9.11.5 Patch 1

9.11.5

ISC BIND 9.11.5 S3 for Supported Preview

9.11.5
supported_preview

ISC BIND 9.12.3

9.12.3

ISC BIND 9.12.3 Patch 1

9.12.3

References

RHSA-2019:3552

https://kb.isc.org/docs/cve-2018-5745

Third Party Advisory

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