GitHub_MCVE-2023-42452CVE-2023-42452
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
AI Score
Confidence
High
EPSS
Percentile
21.7%
Mastodon is a free, open-source social network server based on ActivityPub. In versions on the 4.x branch prior to versions 4.0.10, 4.2.8, and 4.2.0-rc2, under certain conditions, attackers can abuse the translation feature to bypass the server-side HTML sanitization, allowing unescaped HTML to execute in the browser. The impact is limited thanks to Mastodon’s strict Content Security Policy, blocking inline scripts, etc. However a CSP bypass or loophole could be exploited to execute malicious XSS. Furthermore, it requires user interaction, as this can only occur upon clicking the “Translate” button on a malicious post. Versions 4.0.10, 4.2.8, and 4.2.0-rc2 contain a patch for this issue.
Affected configurations
| Vendor | Product | Version | CPE |
|---|---|---|---|
| joinmastodon | mastodon | * | cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:* |
| joinmastodon | mastodon | 4.2.0 | cpe:2.3:a:joinmastodon:mastodon:4.2.0:beta1:*:*:*:*:*:* |
| joinmastodon | mastodon | 4.2.0 | cpe:2.3:a:joinmastodon:mastodon:4.2.0:beta2:*:*:*:*:*:* |
| joinmastodon | mastodon | 4.2.0 | cpe:2.3:a:joinmastodon:mastodon:4.2.0:beta3:*:*:*:*:*:* |
| joinmastodon | mastodon | 4.2.0 | cpe:2.3:a:joinmastodon:mastodon:4.2.0:rc1:*:*:*:*:*:* |
CNA Affected
[
{
"vendor": "mastodon",
"product": "mastodon",
"versions": [
{
"version": ">= 4.0.0, < 4.0.10",
"status": "affected"
},
{
"version": ">= 4.1.0, < 4.1.8",
"status": "affected"
},
{
"version": ">= 4.2.0-beta1, < 4.2.0-rc2",
"status": "affected"
}
]
}
]Related
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
AI Score
Confidence
High
EPSS
Percentile
21.7%