CVE-2021-21401 (GCVE-0-2021-21401)
Vulnerability from cvelistv5
Published
2021-03-23 17:45
Modified
2024-08-03 18:09
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-763 - Release of Invalid Pointer or Reference
Summary
Nanopb is a small code-size Protocol Buffers implementation in ansi C. In Nanopb before versions 0.3.9.8 and 0.4.5, decoding a specifically formed message can cause invalid `free()` or `realloc()` calls if the message type contains an `oneof` field, and the `oneof` directly contains both a pointer field and a non-pointer field. If the message data first contains the non-pointer field and then the pointer field, the data of the non-pointer field is incorrectly treated as if it was a pointer value. Such message data rarely occurs in normal messages, but it is a concern when untrusted data is parsed. This has been fixed in versions 0.3.9.8 and 0.4.5. See referenced GitHub Security Advisory for more information including workarounds.
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
Impacted products
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T18:09:16.087Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://github.com/nanopb/nanopb/security/advisories/GHSA-7mv5-5mxh-qg88"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/nanopb/nanopb/issues/647"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/nanopb/nanopb/commit/e2f0ccf939d9f82931d085acb6df8e9a182a4261"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/nanopb/nanopb/blob/c9124132a604047d0ef97a09c0e99cd9bed2c818/CHANGELOG.txt#L1"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "nanopb",
"vendor": "nanopb",
"versions": [
{
"status": "affected",
"version": "\u003e= 0.3.2, \u003c= 0.3.9.7"
},
{
"status": "affected",
"version": "\u003e= 0.4.0, \u003c= 0.4.4"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Nanopb is a small code-size Protocol Buffers implementation in ansi C. In Nanopb before versions 0.3.9.8 and 0.4.5, decoding a specifically formed message can cause invalid `free()` or `realloc()` calls if the message type contains an `oneof` field, and the `oneof` directly contains both a pointer field and a non-pointer field. If the message data first contains the non-pointer field and then the pointer field, the data of the non-pointer field is incorrectly treated as if it was a pointer value. Such message data rarely occurs in normal messages, but it is a concern when untrusted data is parsed. This has been fixed in versions 0.3.9.8 and 0.4.5. See referenced GitHub Security Advisory for more information including workarounds."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-763",
"description": "CWE-763: Release of Invalid Pointer or Reference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2021-03-23T17:45:19.000Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/nanopb/nanopb/security/advisories/GHSA-7mv5-5mxh-qg88"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/nanopb/nanopb/issues/647"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/nanopb/nanopb/commit/e2f0ccf939d9f82931d085acb6df8e9a182a4261"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/nanopb/nanopb/blob/c9124132a604047d0ef97a09c0e99cd9bed2c818/CHANGELOG.txt#L1"
}
],
"source": {
"advisory": "GHSA-7mv5-5mxh-qg88",
"discovery": "UNKNOWN"
},
"title": "Invalid free() call in Nanopb",
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "security-advisories@github.com",
"ID": "CVE-2021-21401",
"STATE": "PUBLIC",
"TITLE": "Invalid free() call in Nanopb"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "nanopb",
"version": {
"version_data": [
{
"version_value": "\u003e= 0.3.2, \u003c= 0.3.9.7"
},
{
"version_value": "\u003e= 0.4.0, \u003c= 0.4.4"
}
]
}
}
]
},
"vendor_name": "nanopb"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "Nanopb is a small code-size Protocol Buffers implementation in ansi C. In Nanopb before versions 0.3.9.8 and 0.4.5, decoding a specifically formed message can cause invalid `free()` or `realloc()` calls if the message type contains an `oneof` field, and the `oneof` directly contains both a pointer field and a non-pointer field. If the message data first contains the non-pointer field and then the pointer field, the data of the non-pointer field is incorrectly treated as if it was a pointer value. Such message data rarely occurs in normal messages, but it is a concern when untrusted data is parsed. This has been fixed in versions 0.3.9.8 and 0.4.5. See referenced GitHub Security Advisory for more information including workarounds."
}
]
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-763: Release of Invalid Pointer or Reference"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/nanopb/nanopb/security/advisories/GHSA-7mv5-5mxh-qg88",
"refsource": "CONFIRM",
"url": "https://github.com/nanopb/nanopb/security/advisories/GHSA-7mv5-5mxh-qg88"
},
{
"name": "https://github.com/nanopb/nanopb/issues/647",
"refsource": "MISC",
"url": "https://github.com/nanopb/nanopb/issues/647"
},
{
"name": "https://github.com/nanopb/nanopb/commit/e2f0ccf939d9f82931d085acb6df8e9a182a4261",
"refsource": "MISC",
"url": "https://github.com/nanopb/nanopb/commit/e2f0ccf939d9f82931d085acb6df8e9a182a4261"
},
{
"name": "https://github.com/nanopb/nanopb/blob/c9124132a604047d0ef97a09c0e99cd9bed2c818/CHANGELOG.txt#L1",
"refsource": "MISC",
"url": "https://github.com/nanopb/nanopb/blob/c9124132a604047d0ef97a09c0e99cd9bed2c818/CHANGELOG.txt#L1"
}
]
},
"source": {
"advisory": "GHSA-7mv5-5mxh-qg88",
"discovery": "UNKNOWN"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2021-21401",
"datePublished": "2021-03-23T17:45:19.000Z",
"dateReserved": "2020-12-22T00:00:00.000Z",
"dateUpdated": "2024-08-03T18:09:16.087Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…