CVE-2023-26154
Vulnérabilité moyenne dans pubnub
Description
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.
Gravité et risque d'exploitation
CVE-2023-26154 obtient un score CVSS de 5.9/10, soit une gravité moyenne. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.96 %, ce qui la place devant 61.0 % des CVE référencées.
Que faire ?
- Vérifiez si pubnub (versions <5.2.0, <7.2.0, <6.19.0, <6.1.0, <7.4.0, <0.4.0, <4.5.0, <4.3.0, <7.7.0, 0, <7.3.0, <6.2.0, <5.3.0, <*) est présent sur votre parc.
- Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
- À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
- Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.
Références
- https://security.snyk.io/vuln/SNYK-JS-PUBNUB-5840690
- https://security.snyk.io/vuln/SNYK-JAVA-COMPUBNUB-6098371
- https://security.snyk.io/vuln/SNYK-DOTNET-PUBNUB-6098372
- https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMPUBNUBGO-6098373
- https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMPUBNUBGOV7-6098374
- https://security.snyk.io/vuln/SNYK-PYTHON-PUBNUB-6098375
- https://security.snyk.io/vuln/SNYK-PHP-PUBNUBPUBNUB-6098376
- https://security.snyk.io/vuln/SNYK-RUBY-PUBNUB-6098377
- https://security.snyk.io/vuln/SNYK-RUST-PUBNUB-6098378
- https://security.snyk.io/vuln/SNYK-UNMANAGED-PUBNUBCCORE-6098379
- https://security.snyk.io/vuln/SNYK-JAVA-COMPUBNUB-6098380
- https://security.snyk.io/vuln/SNYK-SWIFT-PUBNUBSWIFT-6098381
- https://security.snyk.io/vuln/SNYK-COCOAPODS-PUBNUB-6098384
- https://security.snyk.io/vuln/SNYK-PUB-PUBNUB-6098385
- https://gist.github.com/vargad/20237094fce7a0a28f0723d7ce395bb0
- https://github.com/pubnub/javascript/blob/master/src/crypto/modules/web.js%23L70
- https://github.com/pubnub/javascript/commit/fb6cd0417cbb4ba87ea2d5d86a9c94774447e119
