CVEvulnerability

CVE-2021-21387

7.5 HIGH Published 2021-03-19 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-03-19
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.1 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-319, CWE-326, CWE-358

Description

Wrongthink peer-to-peer, end-to-end encrypted messenger with PeerJS and Axolotl ratchet. In wrongthink from version 2.0.0 and before 2.3.0 there was a set of vulnerabilities causing inadequate encryption strength. Part of the secret identity key was disclosed by the fingerprint used for connection. Additionally, the safety number was improperly calculated. It was computed using part of one of the public identity keys instead of being derived from both public identity keys. This caused issues in computing safety numbers which would potentially be exploitable in the real world. Additionally there was inadequate encryption strength due to use of 1024-bit DSA keys. These issues are all fixed in version 2.3.0.

Affected configurations

• wrongthink wrongthink (>= 2.0.0 < 2.3.0)

Related

Weakness · CWE (3)

  • CWE-319 Cleartext Transmission of Sensitive Information weakness
  • CWE-326 Inadequate Encryption Strength weakness
  • CWE-358 Improperly Implemented Security Check for Standard weakness

References