CVE-2021-27878Veritas Backup Exec Agent Command Execution Vulnerability
Bekannt ausgenutzt — Veritas Backup Exec Agent Command Execution Vulnerability
CISA hat am 07.04.2023 bestätigt, dass diese Schwachstelle in echten Angriffen genutzt wird. Frist für US-Bundesbehörden: 28.04.2023.
Erforderliche Maßnahme: Apply updates per vendor instructions. https://www.veritas.com/support/en_US/security/VTS21-001; https://nvd.nist.gov/vuln/detail/CVE-2021-27878
Beschreibung
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. The attacker could use one of these commands to execute an arbitrary command on the system using system privileges.
Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.
Betroffene Produkte und Versionen
| Hersteller | Produkt | Versionen | |
|---|---|---|---|
| veritas | backup exec | < 21.2 |
Referenzen und Patches
- https://www.veritas.com/content/support/en_US/security/VTS21-001#issue3 Vendor Advisory
- http://packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-Remote-Code-Execution.html ExploitThird Party AdvisoryVDB Entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27878 US Government Resource
CPE-Treffer (NVD) (1)
cpe:2.3:a:veritas:backup_exec:*:*:*:*:*:*:*:*< 21.2