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cvelistGitHub_MCVELIST:CVE-2023-36462
HistoryJul 06, 2023 - 7:16 p.m.

CVE-2023-36462 Mastodon's verified profile links can be formatted in a misleading way

2023-07-0619:16:37
CWE-20
GitHub_M
www.cve.org
4
mastodon
verified profile
misleading formatting
phishing
activitypub
server
vulnerability
patch

CVSS3

5.4

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

EPSS

0.001

Percentile

40.4%

Mastodon is a free, open-source social network server based on ActivityPub. Starting in version 2.6.0 and prior to versions 3.5.9, 4.0.5, and 4.1.3, an attacker can craft a verified profile link using specific formatting to conceal arbitrary parts of the link, enabling it to appear to link to a different URL altogether. The link is visually misleading, but clicking on it will reveal the actual link. This can still be used for phishing, though, similar to IDN homograph attacks. Versions 3.5.9, 4.0.5, and 4.1.3 contain a patch for this issue.

CNA Affected

[
  {
    "vendor": "mastodon",
    "product": "mastodon",
    "versions": [
      {
        "version": ">= 2.6.0, < 3.5.9",
        "status": "affected"
      },
      {
        "version": ">= 4.0.0, < 4.0.5",
        "status": "affected"
      },
      {
        "version": ">= 4.1.0, < 4.1.3",
        "status": "affected"
      }
    ]
  }
]

CVSS3

5.4

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

EPSS

0.001

Percentile

40.4%

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