github - ghsa-9j5v-h34p-h6g6

GHSA-9J5V-H34P-H6G6

Vulnerability from github – Published: 2022-05-24 17:43 – Updated: 2025-10-22 00:32

Details

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.

Severity ?

8.1 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2021-27876"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-03-01T22:15:00Z",
    "severity": "HIGH"
  },
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  "id": "GHSA-9j5v-h34p-h6g6",
  "modified": "2025-10-22T00:32:03Z",
  "published": "2022-05-24T17:43:26Z",
  "references": [
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-27876"
    },
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      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27876"
    },
    {
      "type": "WEB",
      "url": "https://www.veritas.com/content/support/en_US/security/VTS21-001#issue2"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-Remote-Code-Execution.html"
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  "severity": [
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      "type": "CVSS_V3"
    }
  ]
}

CVE-2021-27876 (GCVE-0-2021-27876)

Vulnerability from cvelistv5 – Published: 2021-03-01 21:49 – Updated: 2025-10-21 23:25

Summary

Severity ?

8.1 (High)


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

CWE

Assigner

mitre

References

URL

Tags

	https://www.veritas.com/content/support/en_US/sec…	x_refsource_MISC
	http://packetstormsecurity.com/files/168506/Verit…	x_refsource_MISC

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-9J5V-H34P-H6G6

CVE-2021-27876 (GCVE-0-2021-27876)

Tags

Sightings

Nomenclature