CVE-2024-37903 (GCVE-0-2024-37903)
Vulnerability from cvelistv5 – Published: 2024-07-05 17:24 – Updated: 2024-08-02 04:04
VLAI
EPSS
VEX
Title
Mastodon has improper authorship check on audience extension for existing posts
Summary
Mastodon is a self-hosted, federated microblogging platform. Starting in version 2.6.0 and prior to versions 4.1.18 and 4.2.10, by crafting specific activities, an attacker can extend the audience of a post they do not own to other Mastodon users on a target server, thus gaining access to the contents of a post not intended for them. Versions 4.1.18 and 4.2.10 contain a patch for this issue.
Severity
8.2 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-31 19:04 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/mastodon/mastodon/security/adv… | x_refsource_CONFIRM |
| https://github.com/mastodon/mastodon/commit/a1c7a… | x_refsource_MISC |
| https://github.com/mastodon/mastodon/commit/d4bf2… | x_refsource_MISC |
| https://github.com/mastodon/mastodon/releases/tag… | x_refsource_MISC |
| https://github.com/mastodon/mastodon/releases/tag… | x_refsource_MISC |
Impacted products
3 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| mastodon | mastodon |
Affected:
>= 2.6.0, < 4.1.18
Affected: >= 4.2.0, < 4.2.10 |
guessed | |
| joinmastodon | mastodon |
Affected:
2.6.0 , < 4.1.18
(custom)
cpe:2.3:a:joinmastodon:mastodon:2.6.0:*:*:*:*:*:*:* |
||
| joinmastodon | mastodon |
Affected:
4.2.0 , < 4.2.10
(custom)
cpe:2.3:a:joinmastodon:mastodon:4.2.0:*:*:*:*:*:*:* |
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"url": "https://github.com/mastodon/mastodon/releases/tag/v4.2.10"
}
],
"title": "CVE Program Container"
},
{
"affected": [
{
"cpes": [
"cpe:2.3:a:joinmastodon:mastodon:2.6.0:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "mastodon",
"vendor": "joinmastodon",
"versions": [
{
"lessThan": "4.1.18",
"status": "affected",
"version": "2.6.0",
"versionType": "custom"
}
]
},
{
"cpes": [
"cpe:2.3:a:joinmastodon:mastodon:4.2.0:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "mastodon",
"vendor": "joinmastodon",
"versions": [
{
"lessThan": "4.2.10",
"status": "affected",
"version": "4.2.0",
"versionType": "custom"
}
]
}
],
"metrics": [
{
"other": {
"content": {
"id": "CVE-2024-37903",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-07-31T19:04:59.386414Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-07-31T19:17:12.398Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "mastodon",
"vendor": "mastodon",
"versions": [
{
"status": "affected",
"version": "\u003e= 2.6.0, \u003c 4.1.18"
},
{
"status": "affected",
"version": "\u003e= 4.2.0, \u003c 4.2.10"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Mastodon is a self-hosted, federated microblogging platform. Starting in version 2.6.0 and prior to versions 4.1.18 and 4.2.10, by crafting specific activities, an attacker can extend the audience of a post they do not own to other Mastodon users on a target server, thus gaining access to the contents of a post not intended for them. Versions 4.1.18 and 4.2.10 contain a patch for this issue."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-862",
"description": "CWE-862: Missing Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-07-05T17:24:49.213Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/mastodon/mastodon/security/advisories/GHSA-xjvf-fm67-4qc3",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/mastodon/mastodon/security/advisories/GHSA-xjvf-fm67-4qc3"
},
{
"name": "https://github.com/mastodon/mastodon/commit/a1c7aae28aecf06659c5b18cfa131b37cd1512a3",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/mastodon/mastodon/commit/a1c7aae28aecf06659c5b18cfa131b37cd1512a3"
},
{
"name": "https://github.com/mastodon/mastodon/commit/d4bf22b632ea8b1174375c4966a6768ab66393b6",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/mastodon/mastodon/commit/d4bf22b632ea8b1174375c4966a6768ab66393b6"
},
{
"name": "https://github.com/mastodon/mastodon/releases/tag/v4.1.18",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/mastodon/mastodon/releases/tag/v4.1.18"
},
{
"name": "https://github.com/mastodon/mastodon/releases/tag/v4.2.10",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/mastodon/mastodon/releases/tag/v4.2.10"
}
],
"source": {
"advisory": "GHSA-xjvf-fm67-4qc3",
"discovery": "UNKNOWN"
},
"title": "Mastodon has improper authorship check on audience extension for existing posts"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2024-37903",
"datePublished": "2024-07-05T17:24:49.213Z",
"dateReserved": "2024-06-10T19:54:41.362Z",
"dateUpdated": "2024-08-02T04:04:23.423Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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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.
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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.
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