CVE Vulnerabilities

CVE-2023-26154

Insufficient Entropy

Published: Dec 06, 2023 | Modified: Dec 11, 2023
CVSS 3.x
5.9
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu

Versions of the package pubnub before 7.4.0; all versions of the package com.pubnub:pubnub; versions of the package pubnub before 6.19.0; all versions of the package github.com/pubnub/go; versions of the package github.com/pubnub/go/v7 before 7.2.0; versions of the package pubnub before 7.3.0; versions of the package pubnub/pubnub before 6.1.0; versions of the package pubnub before 5.3.0; versions of the package pubnub before 0.4.0; versions of the package pubnub/c-core before 4.5.0; versions of the package com.pubnub:pubnub-kotlin before 7.7.0; versions of the package pubnub/swift before 6.2.0; versions of the package pubnub before 5.2.0; versions of the package pubnub before 4.3.0 are vulnerable to Insufficient Entropy via the getKey function, due to inefficient implementation of the AES-256-CBC cryptographic algorithm. The provided encrypt function is less secure when hex encoding and trimming are applied, leaving half of the bits in the key always the same for every encoded message or file. Note: In order to exploit this vulnerability, the attacker needs to invest resources in preparing the attack and brute-force the encryption.

Weakness

The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.

Affected Software

Name Vendor Start Version End Version
C-core Pubnub * 4.5.0 (excluding)
Kotlin Pubnub * 7.7.0 (excluding)
Pubnub Pubnub * 0.4.0 (excluding)
Pubnub Pubnub * 7.2.0 (excluding)
Pubnub Pubnub 3.6.4 (including) 4.3.0 (excluding)
Pubnub Pubnub 4.3.1 (including) 5.2.0 (excluding)
Pubnub Pubnub 6.0.0 (including) 6.1.0 (excluding)
Pubnub Pubnub 6.2.0 (including) 6.19.0 (excluding)
Pubnub Pubnub 7.0.0 (including) 7.3.0 (excluding)
Pubnub Pubnub 7.3.1 (including) 7.4.0 (excluding)
Swift Pubnub * 6.2.0 (excluding)

Potential Mitigations

References