CVE-2022-39264 nheko vulnerable to secret poisoning using MITM on secret requests by the homeserver

2022-09-2800:00:00

CWE-287

CWE-295

GitHub_M

www.cve.org

nheko

secret poisoning

mitm

upgrade

patch

workaround

homeserver

man-in-the-middle

vulnerability

desktop client

CVSS3

8.6

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

8.6

Confidence

High

EPSS

0.001

Percentile

45.5%

JSON

nheko is a desktop client for the Matrix communication application. All versions below 0.10.2 are vulnerable homeservers inserting malicious secrets, which could lead to man-in-the-middle attacks. Users can upgrade to version 0.10.2 to protect against this issue. As a workaround, one may apply the patch manually, avoid doing verifications of one’s own devices, and/or avoid pressing the request button in the settings menu.

CNA Affected

[
  {
    "vendor": "Nheko-Reborn",
    "product": "nheko",
    "versions": [
      {
        "version": "< 0.10.2",
        "status": "affected"
      }
    ]
  }
]