ALPINE-CVE-2023-3817

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2023-3817
Published: 31 Jul 2023, 16:15
Last modified:03 Dec 2025, 22:52

Vulnerability Summary

Overall Risk (default)
low
21/100
CVSS Score
5.3 MEDIUM
3.1 (osv_alpine)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

31 Jul 2023, 16:15
Published
Vulnerability first disclosed
03 Dec 2025, 22:52
Last Modified
Vulnerability information updated

Description

Issue summary: Checking excessively long DH keys or parameters may be very slow. Impact summary: Applications that use the functions DH_check(), DH_check_ex() or EVP_PKEY_param_check() to check a DH key or DH 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 function DH_check() performs various checks on DH parameters. After fixing CVE-2023-3446 it was discovered that a large q parameter value can also trigger an overly long computation during some of these checks. A correct q value, if present, cannot be larger than the modulus p parameter, thus it is unnecessary to perform these checks if q is larger than p. An application that calls DH_check() and supplies a key or parameters obtained from an untrusted source could be vulnerable to a Denial of Service attack. The function DH_check() is itself called by a number of other OpenSSL functions. An application calling any of those other functions may similarly be affected. The other functions affected by this are DH_check_ex() and EVP_PKEY_param_check(). Also vulnerable are the OpenSSL dhparam 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 not affected by this issue.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected Systems

  • alpine•openssl

    < 1.1.1v-r0 | < 1.1.1v-r0 | < 3.0.10-r0 | < 3.1.2-r0 | < 3.1.2-r0 | < 3.1.2-r0 | < 3.1.2-r0 | < 3.1.2-r0 | < 3.1.2-r0

  • alpine•openssl3

    < 3.0.11-r0 | < 3.0.11-r0

References (1)