CVE-2023-0286 (GCVE-0-2023-0286)
Vulnerability from cvelistv5 – Published: 2023-02-08 19:01 – Updated: 2026-10-14 19:23
VLAI
EPSS
VEX
Title
X.400 address type confusion in X.509 GeneralName
Summary
There is a type confusion vulnerability relating to X.400 address processing
inside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING but
the public structure definition for GENERAL_NAME incorrectly specified the type
of the x400Address field as ASN1_TYPE. This field is subsequently interpreted by
the OpenSSL function GENERAL_NAME_cmp as an ASN1_TYPE rather than an
ASN1_STRING.
When CRL checking is enabled (i.e. the application sets the
X509_V_FLAG_CRL_CHECK flag), this vulnerability may allow an attacker to pass
arbitrary pointers to a memcmp call, enabling them to read memory contents or
enact a denial of service. In most cases, the attack requires the attacker to
provide both the certificate chain and CRL, neither of which need to have a
valid signature. If the attacker only controls one of these inputs, the other
input must already contain an X.400 address as a CRL distribution point, which
is uncommon. As such, this vulnerability is most likely to only affect
applications which have implemented their own functionality for retrieving CRLs
over a network.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-06 15:57 UTC
CWE
- type confusion vulnerability
- CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
References
21 references
Impacted products
10 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| OpenSSL | OpenSSL |
Affected:
3.0.0 , < 3.0.8
(semver)
Affected: 1.1.1 , < 1.1.1t (custom) Affected: 1.0.2 , < 1.0.2zg (custom) |
guessed | |
| Siemens | BFCClient |
Affected:
0 , < V2.17
(custom)
|
guessed | |
| Siemens | RUGGEDCOM APE1808 |
Affected:
0 , < *
(custom)
|
guessed | |
| Siemens | SCALANCE W1750D (JP) |
Affected:
0 , < V8.10.0.9
(custom)
|
guessed | |
| Siemens | SCALANCE W1750D (ROW) |
Affected:
0 , < V8.10.0.9
(custom)
|
guessed | |
| Siemens | SCALANCE W1750D (USA) |
Affected:
0 , < V8.10.0.9
(custom)
|
guessed | |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
guessed | |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
guessed | |
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem |
Affected:
0 , < V1.1
(custom)
|
guessed | |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
guessed |
Date Public
2023-02-07 00:00
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"value": "There is a type confusion vulnerability relating to X.400 address processing\ninside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING but\nthe public structure definition for GENERAL_NAME incorrectly specified the type\nof the x400Address field as ASN1_TYPE. This field is subsequently interpreted by\nthe OpenSSL function GENERAL_NAME_cmp as an ASN1_TYPE rather than an\nASN1_STRING.\n\nWhen CRL checking is enabled (i.e. the application sets the\nX509_V_FLAG_CRL_CHECK flag), this vulnerability may allow an attacker to pass\narbitrary pointers to a memcmp call, enabling them to read memory contents or\nenact a denial of service. In most cases, the attack requires the attacker to\nprovide both the certificate chain and CRL, neither of which need to have a\nvalid signature. If the attacker only controls one of these inputs, the other\ninput must already contain an X.400 address as a CRL distribution point, which\nis uncommon. As such, this vulnerability is most likely to only affect\napplications which have implemented their own functionality for retrieving CRLs\nover a network."
}
],
"metrics": [
{
"format": "other",
"other": {
"content": {
"text": "High"
},
"type": "https://www.openssl.org/policies/secpolicy.html"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "type confusion vulnerability",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-02-04T09:06:58.565Z",
"orgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
"shortName": "openssl"
},
"references": [
{
"name": "OpenSSL Advisory",
"tags": [
"vendor-advisory"
],
"url": "https://www.openssl.org/news/secadv/20230207.txt"
},
{
"name": "3.0.8 git commit",
"tags": [
"patch"
],
"url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2f7530077e0ef79d98718138716bc51ca0cad658"
},
{
"name": "1.1.1t git commit",
"tags": [
"patch"
],
"url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2c6c9d439b484e1ba9830d8454a34fa4f80fdfe9"
},
{
"name": "1.0.2zg patch (premium)",
"tags": [
"patch"
],
"url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fd2af07dc083a350c959147097003a14a5e8ac4d"
},
{
"url": "https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/018_x509.patch.sig"
},
{
"url": "https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.6.2-relnotes.txt"
},
{
"url": "https://security.gentoo.org/glsa/202402-08"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "X.400 address type confusion in X.509 GeneralName",
"x_generator": {
"engine": "Vulnogram 0.1.0-dev"
}
}
},
"cveMetadata": {
"assignerOrgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
"assignerShortName": "openssl",
"cveId": "CVE-2023-0286",
"datePublished": "2023-02-08T19:01:50.514Z",
"dateReserved": "2023-01-13T10:40:41.259Z",
"dateUpdated": "2026-10-14T19:23:44.227Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.