CVE-2023-0464
Excessive Resource Usage Verifying X.509 Policy Constraints
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
A security vulnerability has been identified in all supported versions
of OpenSSL related to the verification of X.509 certificate chains
that include policy constraints. Attackers may be able to exploit this
vulnerability by creating a malicious certificate chain that triggers
exponential use of computational resources, leading to a denial-of-service
(DoS) attack on affected systems.
Policy processing is disabled by default but can be enabled by passing
the `-policy' argument to the command line utilities or by calling the
`X509_VERIFY_PARAM_set1_policies()' function.
A security vulnerability has been identified in all supported OpenSSL versions related to verifying X.509 certificate chains that include policy constraints. This flaw allows attackers to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of computational resources, leading to a denial of service (DoS) attack on affected systems. Policy processing is disabled by default but can be enabled by passing the -policy' argument to the command line utilities or calling the X509_VERIFY_PARAM_set1_policies()' function.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2023-01-24 CVE Reserved
- 2023-03-22 CVE Published
- 2024-08-02 CVE Updated
- 2024-11-10 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-295: Improper Certificate Validation
- CWE-400: Uncontrolled Resource Consumption
CAPEC
References (12)
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://www.openssl.org/news/secadv/20230322.txt | 2024-06-21 | |
| https://access.redhat.com/security/cve/CVE-2023-0464 | 2023-12-07 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2181082 | 2023-12-07 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | >= 1.0.2 < 1.0.2zh Search vendor "Openssl" for product "Openssl" and version " >= 1.0.2 < 1.0.2zh" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | >= 1.1.1 < 1.1.1u Search vendor "Openssl" for product "Openssl" and version " >= 1.1.1 < 1.1.1u" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | >= 3.0.0 < 3.0.9 Search vendor "Openssl" for product "Openssl" and version " >= 3.0.0 < 3.0.9" | - |
Affected
| ||||||
| Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | >= 3.1.0 < 3.1.1 Search vendor "Openssl" for product "Openssl" and version " >= 3.1.0 < 3.1.1" | - |
Affected
| ||||||