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GitHub_MCVELIST:CVE-2021-29452

HistoryApr 16, 2021 - 9:35 p.m.

CVE-2021-29452 Any logged in user could edit any other logged in user.

2021-04-1621:35:15

CWE-269

GitHub_M

www.cve.org

cve-2021-29452

authentication system

hal-form

user editing

privilege escalation

npm package

vulnerability

patch

CVSS3

8.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

8.5

Confidence

High

EPSS

0.001

Percentile

22.7%

JSON

a12n-server is an npm package which aims to provide a simple authentication system. A new HAL-Form was added to allow editing users in version 0.18.0. This feature should only have been accessible to admins. Unfortunately, privileges were incorrectly checked allowing any logged in user to make this change. Patched in v0.18.2.

CNA Affected

[
  {
    "product": "a12n-server",
    "vendor": "curveball",
    "versions": [
      {
        "status": "affected",
        "version": ">= 0.18 < 0.18.2"
      }
    ]
  }
]

References

github.com/curveball/a12n-server/security/advisories/GHSA-8hw9-22v6-9jr9

www.npmjs.com/package/%40curveball/a12n-server

CVSS3

8.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

8.5

Confidence

High

EPSS

0.001

Percentile

22.7%

JSON

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