high8.2Known exploited
CVE-2021-27877
Veritas Backup Exec Agent Improper Authentication Vulnerability
Exploited in the wild
This vulnerability is on a Known Exploited Vulnerabilities catalogue, added 2023-04-07. Federal due date: 2023-04-28.
Apply updates per vendor instructions.
Impact
An issue was discovered in Veritas Backup Exec before 21.2. It supports multiple authentication schemes: SHA authentication is one of these. This authentication scheme is no longer used in current versions of the product, but hadn't yet been disabled. An attacker could remotely exploit this scheme to gain unauthorized access to an Agent and execute privileged commands.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Veritas | Backup Exec | before 21.2 |
References
- NVD record
- CVE.org record
- CISA KEV catalog
- http://packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-Remote-Code-Execution.html
- https://www.veritas.com/content/support/en_US/security/VTS21-001#issue1
- http://packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-Remote-Code-Execution.html
- https://www.veritas.com/content/support/en_US/security/VTS21-001#issue1
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27877