OCSP_basic_verify may incorrectly verify the response signing certificate (CVE-2022-1343)
Published Last modified Sources: Siemens ProductCERT, Ubuntu, CVE.org, OSV
What is affected, what to do
The function `OCSP_basic_verify` verifies the signer certificate on an OCSP response. In the case where the (non-default) flag OCSP_NOCHECKS is used then the response will be positive (meaning a successful verification) even in the case where the response signing certificate fails to verify.
Update openssl to version 3.0.3.
- Affected
- OpenSSL
eq Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2)..Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2)
- OpenSSL
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Metrics
5.3
Priority
XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.
Source: NVD, CVSS v3
5.3
CVSS v3
Severity Medium on the scale from 0 to 10.
Source: Siemens ProductCERT, Ubuntu, CVE.org, OSV
2.1 %
EPSS score
Moderate — model estimates 1-10% exploitation likelihood.
Source: FIRST EPSS, percentile 82.0
Show all metrics
- Severity
- Medium
Priority (0–325)
The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?
Read in glossary- 81.07 Methodology
Exploit maturity
An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.
Read in glossary- no public PoC known
XIEM Effective CVSS
XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.
Read in glossary- 5.3 Methodology
CVSS v3
CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.
Read in glossary- 5.3
EPSS score
The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.
Read in glossary- 2.1 %
- Moderate — model estimates 1-10% exploitation likelihood.
EPSS percentile
The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.
Read in glossary- 82.0
- Critical — this CVE ranks in the top fifth of all CVEs scored today (rank ≥ 80%).
KEV status
The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.
Read in glossary- —
- Published
- CISA assessment (SSVC)
- Exploitation: none known · automatable · Technical impact: partial
- Source: CISA Vulnrichment, as of 23 April 2025
CWE
CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect.
Read in glossary- CWE-295
Detection rules
No NEOSEC detection rule is available for this vulnerability yet.
Classification under NIS2 and CRA
Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.
NIS2
NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.
Read in glossary- Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.
CRA
The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.
Read in glossary- From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
ISO/IEC 27001
ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.
Read in glossary- Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.
Description
The function `OCSP_basic_verify` verifies the signer certificate on an OCSP response. In the case where the (non-default) flag OCSP_NOCHECKS is used then the response will be positive (meaning a successful verification) even in the case where the response signing certificate fails to verify. It is anticipated that most users of `OCSP_basic_verify` will not use the OCSP_NOCHECKS flag. In this case the `OCSP_basic_verify` function will return a negative value (indicating a fatal error) in the case of a certificate verification failure. The normal expected return value in this case would be 0. This issue also impacts the command line OpenSSL "ocsp" application. When verifying an ocsp response with the "-no_cert_checks" option the command line application will report that the verification is successful even though it has in fact failed. In this case the incorrect successful response will also be accompanied by error messages showing the failure and contradicting the apparently successful result. Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2).
Source: siemens_advisory, Ubuntu Security Notices, cvelistv5, NVD (NIST), OSV (Open Source Vulnerabilities)
Affected products
The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.
| Affected versions | Fixed in | ||
|---|---|---|---|
| OpenSSL | OpenSSL |
|
|
| netapp | active_iq_unified_manager |
|
|
| netapp | clustered_data_ontap |
|
|
| netapp | clustered_data_ontap_antivirus_connector |
|
|
| netapp | santricity_smi-s_provider |
|
|
| netapp | smi-s_provider |
|
|
| netapp | snapmanager |
|
|
| netapp | solidfire\,_enterprise_sds_\&_hci_storage_node |
|
|
| netapp | solidfire_\&_hci_management_node |
|
|
| openssl | openssl |
|
|
Vendors and products
- NetApp A250 Firmware
- NetApp A700s Firmware
- NetApp Active IQ Unified Manager
- NetApp Aff 500f Firmware
- NetApp Aff 8300 Firmware
- NetApp Aff 8700 Firmware
- NetApp Aff A400 Firmware
- NetApp FreeBSD
- NetApp Clustered Data Ontap Antivirus Connector
- NetApp Fabric-attached Storage A400 Firmware
- NetApp Fas 500f Firmware
- NetApp Fas 8300 Firmware
Affected operating systems
| Linux | ubuntu | openssl | bionic |
| Linux | ubuntu | openssl | focal |
| Linux | ubuntu | openssl | impish |
| Linux | ubuntu | openssl | jammy |
| Linux | ubuntu | openssl1.0 | bionic |
| Other | netapp | a250_firmware | — |
| Other | netapp | a700s_firmware | — |
| Other | netapp | aff_500f_firmware | — |
| Other | netapp | aff_8300_firmware | — |
| Other | netapp | aff_8700_firmware | — |
| Other | netapp | aff_a400_firmware | — |
| Other | netapp | fabric-attached_storage_a400_firmware | — |
| Other | netapp | fas_500f_firmware | — |
| Other | netapp | fas_8300_firmware | — |
| Other | netapp | fas_8700_firmware | — |
| Other | netapp | h300e_firmware | — |
| Other | netapp | h300s_firmware | — |
| Other | netapp | h410s_firmware | — |
| Other | netapp | h500e_firmware | — |
| Other | netapp | h500s_firmware | — |
| Other | netapp | h700e_firmware | — |
| Other | netapp | h700s_firmware | — |
Weakness classes (CWE)
CWE-295Improper Certificate Validation
Base
The product does not validate, or incorrectly validates, a certificate.
Entry at MITRE CWE-295
References & sources
- crates.iocrates/openssl-srcpackage
- rustsec.orgadvisories/RUSTSEC-2022-0027.htmladvisory
- openssl.orgnews/secadv/20220503.txtweb
- git.openssl.orggitweb/?p=openssl.git;a=commitdiff;h=2eda98790c5c2741d76d23cc1e…
- security.netapp.comadvisory/ntap-20220602-0009
- Siemens ProductCERTproductcert/pdf/ssa-953464.pdf
- NVD (NIST)vuln/detail/CVE-2022-1343advisory
- github.comgithub/advisory-database/issues/405web
- git.openssl.orggitweb/?p=openssl.git;a=commitdiff;h=2eda98790c5c2741d76d23cc1e…web
- security.netapp.comadvisory/ntap-20220602-0009web
- Siemens ProductCERTproductcert/html/ssa-953464.html
- Siemens ProductCERTproductcert/html/ssa-419740.html
- Siemens ProductCERTproductcert/html/ssa-794697.html
- Siemens ProductCERTproductcert/html/ssa-942865.html
- Siemens ProductCERTproductcert/html/ssa-398330.html
Changes to this CVE
Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).
Record modifiedSiemens ADP
Show 6 original changes
Individual changes of this event as published by NVD Type Action Before After Affected versions (publisher) added —New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2022/1xxx/CVE-2022-1343.json">CVE-2022-1343</a>Reference added —https://cert-portal.siemens.com/productcert/html/ssa-398330.htmlReference added —https://cert-portal.siemens.com/productcert/html/ssa-419740.htmlReference added —https://cert-portal.siemens.com/productcert/html/ssa-794697.htmlReference added —https://cert-portal.siemens.com/productcert/html/ssa-942865.htmlReference added —https://cert-portal.siemens.com/productcert/html/ssa-953464.htmlSource identifier: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Record modifiedopenssl.org
Show 10 original changes
Individual changes of this event as published by NVD Type Action Before After Reference added —https://cert-portal.siemens.com/productcert/pdf/ssa-953464.pdfReference added —https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=2eda98790c5c2741d76d23cc1e74b0dc4f4b391aReference added —https://security.netapp.com/advisory/ntap-20220602-0009/Reference added —https://www.openssl.org/news/secadv/20220503.txtReference removed https://cert-portal.siemens.com/productcert/pdf/ssa-953464.pdf—Reference removed https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=2eda98790c5c2741d76d23cc1e74b0dc4f4b391a—Reference removed https://security.netapp.com/advisory/ntap-20220602-0009/—Reference removed https://www.openssl.org/news/secadv/20220503.txt—Reference type removed https://security.netapp.com/advisory/ntap-20220602-0009/ Types: Third Party Advisory—Reference type removed https://www.openssl.org/news/secadv/20220503.txt Types: Vendor Advisory—Source identifier: openssl-security@openssl.org
Record modifiedCVE Program
Show 10 original changes
Individual changes of this event as published by NVD Type Action Before After Reference added —https://cert-portal.siemens.com/productcert/pdf/ssa-953464.pdfReference added —https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=2eda98790c5c2741d76d23cc1e74b0dc4f4b391aReference added —https://security.netapp.com/advisory/ntap-20220602-0009/Reference added —https://www.openssl.org/news/secadv/20220503.txtReference removed https://cert-portal.siemens.com/productcert/pdf/ssa-953464.pdf—Reference removed https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=2eda98790c5c2741d76d23cc1e74b0dc4f4b391a—Reference removed https://security.netapp.com/advisory/ntap-20220602-0009/—Reference removed https://www.openssl.org/news/secadv/20220503.txt—Reference type removed https://security.netapp.com/advisory/ntap-20220602-0009/ Types: Third Party Advisory—Reference type removed https://www.openssl.org/news/secadv/20220503.txt Types: Vendor Advisory—Source identifier: af854a3a-2127-422b-91ae-364da2661108
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<a href="https://intel.neosec.eu/en/cve/CVE-2022-1343"><img src="https://intel.neosec.eu/badge/cve/CVE-2022-1343.svg?lang=en" alt="CVE-2022-1343 – NEOSEC Intel" height="20"></a>