Denial of Service (DoS) Affecting cryptography package, versions [,42.0.0)
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Test your applications- Snyk ID SNYK-PYTHON-CRYPTOGRAPHY-6050294
- published 8 Nov 2023
- disclosed 24 Oct 2023
- credit David Benjamin
Introduced: 24 Oct 2023
CVE-2023-5678 Open this link in a new tabHow to fix?
Upgrade cryptography to version 42.0.0 or higher.
Overview
Affected versions of this package are vulnerable to Denial of Service (DoS) when the DH_generate_key(), DH_check_pub_key(), DH_check_pub_key_ex(), EVP_PKEY_public_check(), and EVP_PKEY_generate() functions are used. An attacker can cause long delays and potentially a Denial of Service by supplying excessively long X9.42 DH keys or parameters obtained from an untrusted source.
Note:
This is only exploitable if the application uses these functions to generate or check an X9.42 DH key or parameters. Also, the OpenSSL pkey command line application, when using the -pubcheck option, as well as the OpenSSL genpkey command line application, are vulnerable to this issue.