Veille CVE
CVE-2021-27876
8.1 Élevée Exploitée activement Utilisée par des rançongicielsCatalogue CISA KEV — Veritas Backup Exec Agent File Access Vulnerability
Ajoutée le 07/04/2023 · Échéance de correction (agences US) : 28/04/2023
Action requise : Apply updates per vendor instructions.
Description
An issue was discovered in Veritas Backup Exec before 21.2. The communication between a client and an Agent requires successful authentication, which is typically completed over a secure TLS communication. However, due to a vulnerability in the SHA Authentication scheme, an attacker is able to gain unauthorized access and complete the authentication process. Subsequently, the client can execute data management protocol commands on the authenticated connection. By using crafted input parameters in one of these commands, an attacker can access an arbitrary file on the system using System privileges.
Produits concernés
Scores CVSS
| Version | Score | Source | Vecteur |
|---|---|---|---|
| 3.1 | 8.1 Élevée | cve@mitre.org | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
| 3.1 | 8.1 Élevée | nvd@nist.gov (NVD) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
| 2.0 | 7.5 Élevée | nvd@nist.gov (NVD) | AV:N/AC:L/Au:S/C:C/I:P/A:N |
Références
- http://packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-Remote-Code-Execution.html ExploitThird Party AdvisoryVDB Entry
- https://www.veritas.com/content/support/en_US/security/VTS21-001#issue2 Vendor Advisory
- http://packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-Remote-Code-Execution.html ExploitThird Party AdvisoryVDB Entry
- https://www.veritas.com/content/support/en_US/security/VTS21-001#issue2 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27876 US Government Resource