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CVE-2021-27877

An issue was discovered in Veritas Backup Exec before 21.2. It supports multiple authentication schemes: SHA authentication is one of these. This...

Basic Information

CVE State
PUBLISHED
Reserved Date
March 01, 2021
Published Date
March 01, 2021
Last Updated
February 04, 2025
Vendor
n/a
Product
n/a
Description
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.

CVSS Scores

CVSS v3.1

8.2 - HIGH

Vector: CVSS:3.1/AC:L/AV:N/A:N/C:H/I:L/PR:N/S:U/UI:N

SSVC Information

Exploitation
active
Automatable
Yes
Technical Impact
partial

Exploit Status

Exploited in the Wild
Yes (added 2023-04-07 00:00:00 UTC) Source
Used in Malware
Yes (added 2023-04-07 00:00:00 UTC) Source

References

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

Known Exploited Vulnerability Information

Source Added Date
CISA 2023-04-07 00:00:00 UTC

Scanner Integrations

Scanner URL Date Detected
Metasploit https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/veritas/beagent_sha_auth_rce.rb 2025-04-29 11:01:25 UTC