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Vulnerability record · CVE-2024-4603 · published 16 May 2024

CVE-2024-4603: Netapp c400 firmware vulnerability

Netapp · C400 Firmware

Issue summary: Checking excessively long DSA keys or parameters may be very slow. Impact summary: Applications that use the functions EVP_PKEY_param_check() or EVP_PKEY_public_check() to check a DSA public key or DSA parameters may experience long delays. Where the key or parameters that are being checked have been obtained from an untrusted source this may lead to a Denial of Service. The functions EVP_PKEY_param_check() or EVP_PKEY_public_check() perform various checks on DSA parameters. Some of those computations take a long time if the modulus (`p` parameter) is too large. Trying to use a very large modulus is slow and OpenSSL will not allow using public keys with a modulus which is over 10,000 bits in length for signature verification. However the key and parameter check functions do not limit the modulus size when performing the checks. An application that calls EVP_PKEY_param_check() or EVP_PKEY_public_check() and supplies a key or parameters obtained from an untrusted source could be vulnerable to a Denial of Service attack. These functions are not called by OpenSSL itself on untrusted DSA keys so only applications that directly call these functions may be vulnerable. Also vulnerable are the OpenSSL pkey and pkeyparam command line applications when using the `-check` option. The OpenSSL SSL/TLS implementation is not affected by this issue. The OpenSSL 3.0 and 3.1 FIPS providers are affected by this issue.

5.3 CVSS 3.1 Medium EPSS 1.2% · top 30.7% CWE-606 · CWE-606CWE-834 · CWE-834
5.3CVSS 3.1 base score
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
22Affected product versions listed by NVD
12References
9 Nov 2026Last modified by NVD

Description

Issue summary: Checking excessively long DSA keys or parameters may be very slow. Impact summary: Applications that use the functions EVP_PKEY_param_check() or EVP_PKEY_public_check() to check a DSA public key or DSA parameters may experience long delays. Where the key or parameters that are being checked have been obtained from an untrusted source this may lead to a Denial of Service. The functions EVP_PKEY_param_check() or EVP_PKEY_public_check() perform various checks on DSA parameters. Some of those computations take a long time if the modulus (`p` parameter) is too large. Trying to use a very large modulus is slow and OpenSSL will not allow using public keys with a modulus which is over 10,000 bits in length for signature verification. However the key and parameter check functions do not limit the modulus size when performing the checks. An application that calls EVP_PKEY_param_check() or EVP_PKEY_public_check() and supplies a key or parameters obtained from an untrusted source could be vulnerable to a Denial of Service attack. These functions are not called by OpenSSL itself on untrusted DSA keys so only applications that directly call these functions may be vulnerable. Also vulnerable are the OpenSSL pkey and pkeyparam command line applications when using the `-check` option. The OpenSSL SSL/TLS implementation is not affected by this issue. The OpenSSL 3.0 and 3.1 FIPS providers are affected by this issue.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

22 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/openssl/openssl/commit/3559e868e58005d15c6013a0c1fd832e51c73397 Patch
https://github.com/openssl/openssl/commit/53ea06486d296b890d565fb971b2764fcd826e7e Patch
https://github.com/openssl/openssl/commit/9c39b3858091c152f52513c066ff2c5a47969f0d Patch
https://github.com/openssl/openssl/commit/da343d0605c826ef197aceedc67e8e04f065f740 Patch
https://www.openssl.org/news/secadv/20240516.txt Vendor Advisory
http://www.openwall.com/lists/oss-security/2024/05/16/2 Mailing ListThird Party Advisory
https://github.com/openssl/openssl/commit/3559e868e58005d15c6013a0c1fd832e51c73397 Patch
https://github.com/openssl/openssl/commit/53ea06486d296b890d565fb971b2764fcd826e7e Patch
https://github.com/openssl/openssl/commit/9c39b3858091c152f52513c066ff2c5a47969f0d Patch
https://github.com/openssl/openssl/commit/da343d0605c826ef197aceedc67e8e04f065f740 Patch
https://security.netapp.com/advisory/ntap-20240621-0001/ Third Party Advisory
https://www.openssl.org/news/secadv/20240516.txt Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2024-4603), CISA KEV, FIRST EPSS (scores of 2026-11-12). This page is refreshed as NVD updates the record.