142 lines
6.4 KiB
JSON
142 lines
6.4 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-33936",
|
|
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "GitHub_M",
|
|
"dateReserved": "2026-03-24T19:50:52.103Z",
|
|
"datePublished": "2026-03-27T22:08:22.868Z",
|
|
"dateUpdated": "2026-04-01T13:44:46.297Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"title": "python-ecdsa: Denial of Service via improper DER length validation in crafted private keys",
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"cweId": "CWE-20",
|
|
"lang": "en",
|
|
"description": "CWE-20: Improper Input Validation",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"cweId": "CWE-130",
|
|
"lang": "en",
|
|
"description": "CWE-130: Improper Handling of Length Parameter Inconsistency",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"attackComplexity": "LOW",
|
|
"attackVector": "NETWORK",
|
|
"availabilityImpact": "LOW",
|
|
"baseScore": 5.3,
|
|
"baseSeverity": "MEDIUM",
|
|
"confidentialityImpact": "NONE",
|
|
"integrityImpact": "NONE",
|
|
"privilegesRequired": "NONE",
|
|
"scope": "UNCHANGED",
|
|
"userInteraction": "NONE",
|
|
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
|
|
"version": "3.1"
|
|
}
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"name": "https://github.com/tlsfuzzer/python-ecdsa/security/advisories/GHSA-9f5j-8jwj-x28g",
|
|
"tags": [
|
|
"x_refsource_CONFIRM"
|
|
],
|
|
"url": "https://github.com/tlsfuzzer/python-ecdsa/security/advisories/GHSA-9f5j-8jwj-x28g"
|
|
},
|
|
{
|
|
"name": "https://github.com/tlsfuzzer/python-ecdsa/commit/bd66899550d7185939bf27b75713a2ac9325a9d3",
|
|
"tags": [
|
|
"x_refsource_MISC"
|
|
],
|
|
"url": "https://github.com/tlsfuzzer/python-ecdsa/commit/bd66899550d7185939bf27b75713a2ac9325a9d3"
|
|
},
|
|
{
|
|
"name": "https://github.com/tlsfuzzer/python-ecdsa/releases/tag/python-ecdsa-0.19.2",
|
|
"tags": [
|
|
"x_refsource_MISC"
|
|
],
|
|
"url": "https://github.com/tlsfuzzer/python-ecdsa/releases/tag/python-ecdsa-0.19.2"
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"vendor": "tlsfuzzer",
|
|
"product": "python-ecdsa",
|
|
"versions": [
|
|
{
|
|
"version": "< 0.19.2",
|
|
"status": "affected"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"providerMetadata": {
|
|
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
|
|
"shortName": "GitHub_M",
|
|
"dateUpdated": "2026-03-27T22:08:22.868Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "The `ecdsa` PyPI package is a pure Python implementation of ECC (Elliptic Curve Cryptography) with support for ECDSA (Elliptic Curve Digital Signature Algorithm), EdDSA (Edwards-curve Digital Signature Algorithm) and ECDH (Elliptic Curve Diffie-Hellman). Prior to version 0.19.2, an issue in the low-level DER parsing functions can cause unexpected exceptions to be raised from the public API functions. `ecdsa.der.remove_octet_string()` accepts truncated DER where the encoded length exceeds the available buffer. For example, an OCTET STRING that declares a length of 4096 bytes but provides only 3 bytes is parsed successfully instead of being rejected. Because of that, a crafted DER input can cause `SigningKey.from_der()` to raise an internal exception (`IndexError: index out of bounds on dimension 1`) rather than cleanly rejecting malformed DER (e.g., raising `UnexpectedDER` or `ValueError`). Applications that parse untrusted DER private keys may crash if they do not handle unexpected exceptions, resulting in a denial of service. Version 0.19.2 patches the issue."
|
|
}
|
|
],
|
|
"source": {
|
|
"advisory": "GHSA-9f5j-8jwj-x28g",
|
|
"discovery": "UNKNOWN"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-04-01T13:44:27.418372Z",
|
|
"id": "CVE-2026-33936",
|
|
"options": [
|
|
{
|
|
"Exploitation": "poc"
|
|
},
|
|
{
|
|
"Automatable": "yes"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"role": "CISA Coordinator",
|
|
"version": "2.0.3"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-04-01T13:44:46.297Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |