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nvd[email protected]NVD:CVE-2023-42450
HistorySep 19, 2023 - 4:15 p.m.

CVE-2023-42450

2023-09-1916:15:12
CWE-918
CWE-113
web.nvd.nist.gov
3
mastodon
activitypub
arbitrary data injection
http requests
confused deputy attacks
server configuration
patch

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

AI Score

6.2

Confidence

High

EPSS

0.001

Percentile

49.1%

Mastodon is a free, open-source social network server based on ActivityPub. Starting in version 4.2.0-beta1 and prior to version 4.2.0-rc2, by crafting specific input, attackers can inject arbitrary data into HTTP requests issued by Mastodon. This can be used to perform confused deputy attacks if the server configuration includes ALLOWED_PRIVATE_ADDRESSES to allow access to local exploitable services. Version 4.2.0-rc2 has a patch for the issue.

Affected configurations

Nvd
Node
joinmastodonmastodonMatch4.2.0beta1
OR
joinmastodonmastodonMatch4.2.0beta2
OR
joinmastodonmastodonMatch4.2.0beta3
OR
joinmastodonmastodonMatch4.2.0rc1
VendorProductVersionCPE
joinmastodonmastodon4.2.0cpe:2.3:a:joinmastodon:mastodon:4.2.0:beta1:*:*:*:*:*:*
joinmastodonmastodon4.2.0cpe:2.3:a:joinmastodon:mastodon:4.2.0:beta2:*:*:*:*:*:*
joinmastodonmastodon4.2.0cpe:2.3:a:joinmastodon:mastodon:4.2.0:beta3:*:*:*:*:*:*
joinmastodonmastodon4.2.0cpe:2.3:a:joinmastodon:mastodon:4.2.0:rc1:*:*:*:*:*:*

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

AI Score

6.2

Confidence

High

EPSS

0.001

Percentile

49.1%

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