CVE-2023-0466: Certificate policy check not enabled
Noroxi assessment
Priority: Monitor (action score 22/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 1.7% (FIRST EPSS); higher than 78.1% of all records.
- Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: OpenSSL OpenSSL 3.0.9, 3.1.1; CBL Mariner 1.0 ARM 1.1.1k-15; CBL Mariner 1.0 x64 1.1.1k-15.
Low priority for now. Upgrade to OpenSSL OpenSSL 3.0.9, 3.1.1; CBL Mariner 1.0 ARM 1.1.1k-15; CBL Mariner 1.0 x64 1.1.1k-15 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
The function X509_VERIFY_PARAM_add0_policy() is documented to implicitly enable the certificate policy check when doing certificate verification. However the implementation of the function does not enable the check which allows certificates with invalid or incorrect policies to pass the certificate verification. As suddenly enabling the policy check could break existing deployments it was decided to keep the existing behavior of the X509_VERIFY_PARAM_add0_policy() function. Instead the applications that require OpenSSL to perform certificate policy check need to use X509_VERIFY_PARAM_set1_policies() or explicitly enable the policy check by calling X509_VERIFY_PARAM_set_flags() with the X509_V_FLAG_POLICY_CHECK flag argument. Certificate policy checks are disabled by default in OpenSSL and are not commonly used by applications.
- BDU:2023-04973
- ALSA-2023:3722
- DLA-3449-1
- DSA-5417-1
- openSUSE-SU-2024:12837-1
- openSUSE-SU-2024:12842-1
- openSUSE-SU-2024:12969-1
- RHSA-2023:3722
- RHSA-2023:7622
- RHSA-2023:7625
- SUSE-SU-2023:1790-1
- SUSE-SU-2023:1794-1
- SUSE-SU-2023:1898-1
- SUSE-SU-2023:1907-1
- SUSE-SU-2023:1908-1
- SUSE-SU-2023:1911-1
- SUSE-SU-2023:1914-1
- SUSE-SU-2023:1922-1
- SUSE-SU-2023:1926-1
- Published
- Mar 28, 2023
- Updated
- Oct 14, 2026
- EPSS
- 1.7% · 78th percentile
- CWE
- CWE-295
Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 21 / 40 · 5.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 1.7%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 5.3
- CNA · openssl
- 5.3
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
Running WordPress? Scan your site free with WP Lens
Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| openssl | openssl | cpe:2.3:a:openssl:openssl |
Check your server's TLS configuration
The OpenSSL version can't be seen from outside; the free SSL checker tests your certificate, enabled TLS versions and weak ciphers. Confirm the version on your server with the package manager.
Run the SSL checkAffected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- openssl openssl1.0.2 and later · before 1.0.2zh
- openssl openssl1.1.1 and later · before 1.1.1u
- openssl openssl3.0.0 and later · before 3.0.9
- openssl openssl3.1.0 and later · before 3.1.1
Versions reported by the vendor
Affected version ranges reported by the assigning authority (openssl). Independent of NVD's CPE analysis and usually ahead of it.
OpenSSL OpenSSL
- 3.1.0 and later · before 3.1.1affected · semver
- 3.0.0 and later · before 3.0.9affected · semver
- 1.1.1 and later · before 1.1.1uaffected
- 1.0.2 and later · before 1.0.2zhaffected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:9 | openssl | before 1:3.0.7-16.el9_2 | 1:3.0.7-16.el9_2 |
| AlmaLinux:9 | openssl-devel | before 1:3.0.7-16.el9_2 | 1:3.0.7-16.el9_2 |
| AlmaLinux:9 | openssl-libs | before 1:3.0.7-16.el9_2 | 1:3.0.7-16.el9_2 |
| AlmaLinux:9 | openssl-perl | before 1:3.0.7-16.el9_2 | 1:3.0.7-16.el9_2 |
| Alpine:v3.17 | openssl | from 1.0.2 · before 3.0.8-r3 | 3.0.8-r3 |
| Debian:10 | openssl | before 1.1.1n-0+deb10u5 | 1.1.1n-0+deb10u5 |
| Debian:11 | openssl | before 1.1.1n-0+deb11u5 | 1.1.1n-0+deb11u5 |
| Debian:12 | openssl | before 3.0.9-1 | 3.0.9-1 |
| openSUSE:Leap 15.4 | openssl-1_0_0 | before 1.0.2p-150000.3.73.1 | 1.0.2p-150000.3.73.1 |
| openSUSE:Leap 15.4 | openssl-3 | before 3.0.1-150400.4.23.1 | 3.0.1-150400.4.23.1 |
| openSUSE:Leap Micro 5.3 | openssl-1_1 | before 1.1.1l-150400.7.34.1 | 1.1.1l-150400.7.34.1 |
| openSUSE:Tumbleweed | openssl-1_0_0 | before 1.0.2u-15.1 | 1.0.2u-15.1 |
| openSUSE:Tumbleweed | openssl-1_1 | before 1.1.1t-3.1 | 1.1.1t-3.1 |
| openSUSE:Tumbleweed | openssl-3 | before 3.1.1-1.1 | 3.1.1-1.1 |
| Red Hat:enterprise_linux:9::appstream | openssl-debuginfo | before 1:3.0.7-16.el9_2 | 1:3.0.7-16.el9_2 |
| Red Hat:enterprise_linux:9::appstream | openssl-debugsource | before 1:3.0.7-16.el9_2 | 1:3.0.7-16.el9_2 |
| Red Hat:enterprise_linux:9::appstream | openssl-devel | before 1:3.0.7-16.el9_2 | 1:3.0.7-16.el9_2 |
| Red Hat:enterprise_linux:9::appstream | openssl-libs-debuginfo | before 1:3.0.7-16.el9_2 | 1:3.0.7-16.el9_2 |
| Red Hat:enterprise_linux:9::appstream | openssl-perl | before 1:3.0.7-16.el9_2 | 1:3.0.7-16.el9_2 |
| Red Hat:enterprise_linux:9::baseos | openssl | before 1:3.0.7-16.el9_2 | 1:3.0.7-16.el9_2 |
| Red Hat:enterprise_linux:9::baseos | openssl-libs | before 1:3.0.7-16.el9_2 | 1:3.0.7-16.el9_2 |
| Red Hat:jboss_core_services:1::el7 | jbcs-httpd24-curl | before 0:8.4.0-2.el7jbcs | 0:8.4.0-2.el7jbcs |
| Red Hat:jboss_core_services:1::el7 | jbcs-httpd24-curl-debuginfo | before 0:8.4.0-2.el7jbcs | 0:8.4.0-2.el7jbcs |
| Red Hat:jboss_core_services:1::el7 | jbcs-httpd24-libcurl | before 0:8.4.0-2.el7jbcs | 0:8.4.0-2.el7jbcs |
+76
Same product
openssl: all recordsOther highest-scoring records for the same primary product.
- CVE-2014-0160The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly handle Heartbeat Extension packets, which allows remKEV90Now
- CVE-2021-3711SM2 Decryption Buffer Overflow65This week
- CVE-2003-0545Double free vulnerability in OpenSSL 0.9.7 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code 65This week
Published before and after this one in the same product
- ← EarlierCVE-2023-0464Mar 22, 2023 · Excessive Resource Usage Verifying X.509 Policy Constraints31Monitor
- ← EarlierCVE-2023-0465Mar 28, 2023 · Invalid certificate policies in leaf certificates are silently ignored22Monitor
- Later →CVE-2023-1255Apr 20, 2023 · Input buffer over-read in AES-XTS implementation on 64 bit ARM23Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| OpenSSL OpenSSL | 3.0.9 | Vendor (CNA) |
| OpenSSL OpenSSL | 3.1.1 | Vendor (CNA) |
| CBL Mariner 1.0 ARM | 1.1.1k-15 · openssl | Microsoft (MSRC) |
| CBL Mariner 1.0 x64 | 1.1.1k-15 · openssl | Microsoft (MSRC) |
| CBL Mariner 2.0 ARM | 1.0.1-6 · hvloader | Microsoft (MSRC) |
| CBL Mariner 2.0 ARM | 1.1.1k-23 · openssl | Microsoft (MSRC) |
| CBL Mariner 2.0 x64 | 1.0.1-6 · hvloader | Microsoft (MSRC) |
| CBL Mariner 2.0 x64 | 1.1.1k-23 · openssl | Microsoft (MSRC) |
| almalinux:openssl | 1:3.0.7-16.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:openssl-devel | 1:3.0.7-16.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:openssl-libs | 1:3.0.7-16.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:openssl-perl | 1:3.0.7-16.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| alpine:openssl | 3.0.8-r3 · Alpine:v3.17 | Package registry (OSV) |
| debian:openssl | 3.0.9-1 · Debian:12 | Package registry (OSV) |
| opensuse:openssl-1_0_0 | 1.0.2p-150000.3.73.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:openssl-1_1 | 1.1.1l-150400.7.34.1 · openSUSE:Leap Micro 5.3 | Package registry (OSV) |
| opensuse:openssl-3 | 3.0.1-150400.4.23.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| red hat:jws5-tomcat | 0:9.0.62-19.redhat_00017.1.el7jws · Red Hat:jboss_enterprise_web_server:5.7::el7 | Package registry (OSV) |
| red hat:jws5-tomcat-admin-webapps | 0:9.0.62-19.redhat_00017.1.el7jws · Red Hat:jboss_enterprise_web_server:5.7::el7 | Package registry (OSV) |
| red hat:jws5-tomcat-docs-webapp | 0:9.0.62-19.redhat_00017.1.el7jws · Red Hat:jboss_enterprise_web_server:5.7::el7 | Package registry (OSV) |
| red hat:jws5-tomcat-native | 0:1.2.31-16.redhat_16.el7jws · Red Hat:jboss_enterprise_web_server:5.7::el7 | Package registry (OSV) |
| red hat:jws5-tomcat-native-debuginfo | 0:1.2.31-16.redhat_16.el7jws · Red Hat:jboss_enterprise_web_server:5.7::el7 | Package registry (OSV) |
| red hat:openssl | 1:3.0.7-16.el9_2 · Red Hat:enterprise_linux:9::baseos | Package registry (OSV) |
| red hat:openssl-debuginfo | 1:3.0.7-16.el9_2 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:openssl-debugsource | 1:3.0.7-16.el9_2 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:openssl-devel | 1:3.0.7-16.el9_2 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:openssl-libs | 1:3.0.7-16.el9_2 · Red Hat:enterprise_linux:9::baseos | Package registry (OSV) |
| red hat:openssl-libs-debuginfo | 1:3.0.7-16.el9_2 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:openssl-perl | 1:3.0.7-16.el9_2 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| suse:openssl | 1.0.2j-60.92.1 · SUSE:Linux Enterprise Server 12 SP2-BCL | Package registry (OSV) |
+6
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
No history yet (it accumulates with the daily EPSS job).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- David Benjamin (Google)reporter
- Tomas Mrazremediation developer
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- low · data or configuration can be modified
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- Low
- Availability impact
- None
Weakness class (CWE)
CWE-295 · Improper Certificate ValidationCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
nvd-primary
Root cause
A certificate validation error is silently swallowed instead of terminating the connection. Often, code added for a test environment makes its way into production.
The bug in code
The whole CWE-295 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
override fun checkServerTrusted(chain: Array<X509Certificate>, type: String) {
// Left empty for the test environment
}Fixed
val client = OkHttpClient.Builder()
.certificatePinner(
CertificatePinner.Builder()
.add("api.sirius.example", "sha256/…")
.build()
).build()Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (17 more)Show less
- git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=0d16b7e99aafc0b4a6d729eec65a411a7e025f0a
- git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=51e8a84ce742db0f6c70510d0159dad8f7825908
- git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=73398dea26de9899fb4baa94098ad0a61f435c72
- git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fc814a30fc4f0bc54fcea7d9a7462f5457aab061
- lists.debian.org/debian-lts-announce/2023/06/msg00011.html
- security.gentoo.org/glsa/202402-08
- security.netapp.com/advisory/ntap-20230414-0001/
- www.debian.org/security/2023/dsa-5417
- www.openssl.org/news/secadv/20230328.txt
- cert-portal.siemens.com/productcert/html/ssa-337522.html
- cert-portal.siemens.com/productcert/html/ssa-341067.html
- cert-portal.siemens.com/productcert/html/ssa-398330.html
- cert-portal.siemens.com/productcert/html/ssa-556635.html
- cert-portal.siemens.com/productcert/html/ssa-625862.html
- cert-portal.siemens.com/productcert/html/ssa-769027.html
- cert-portal.siemens.com/productcert/html/ssa-794697.html
- cert-portal.siemens.com/productcert/html/ssa-879734.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.