CVE-2021-27878

תיאור (מקור, אנגלית)

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.

מדדים

CVSS 3.1

8.8 (HIGH) מקור הציון: NVD CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — סבירות ניצול

24% (אחוזון 100) נכון ל-30/7/2026

מוצרים מושפעים

veritas: backup exec

קישורים

• https://www.veritas.com/content/support/en_US/security/VTS21-001#issue3 Vendor Advisory
• https://www.veritas.com/content/support/en_US/security/VTS21-001#issue3 Vendor Advisory
• http://packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-Remote-C‮… ExploitThird Party AdvisoryVDB Entry
• http://packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-Remote-C‮… ExploitThird Party AdvisoryVDB Entry
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-202‮… US Government Resource