5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
6.4 Medium
AI Score
Confidence
High
0.003 Low
EPSS
Percentile
65.6%
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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Alpine | edge-main | noarch | openssl | < 3.1.2-r0 | UNKNOWN |
Alpine | 3.15-main | noarch | openssl | < 1.1.1v-r0 | UNKNOWN |
Alpine | 3.15-main | noarch | openssl3 | < 3.0.11-r0 | UNKNOWN |
Alpine | 3.16-main | noarch | openssl | < 1.1.1v-r0 | UNKNOWN |
Alpine | 3.16-main | noarch | openssl3 | < 3.0.11-r0 | UNKNOWN |
Alpine | 3.17-main | noarch | openssl | < 3.0.10-r0 | UNKNOWN |
Alpine | 3.18-main | noarch | openssl | < 3.1.2-r0 | UNKNOWN |
Alpine | 3.19-main | noarch | openssl | < 3.1.2-r0 | UNKNOWN |
Alpine | 3.20-main | noarch | openssl | < 3.1.2-r0 | UNKNOWN |
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
6.4 Medium
AI Score
Confidence
High
0.003 Low
EPSS
Percentile
65.6%