CVE-2021-27913 - CVE House
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Status published Low CVE-2021-27913

Use of a Broken or Risky Cryptographic Algorithm

Vulnerability Description

The function mt_rand is used to generate session tokens, this function is cryptographically flawed due to its nature being one pseudorandomness, an attacker can take advantage of the cryptographically insecure nature of this function to enumerate session tokens for accounts that are not under his/her control This issue affects: Mautic Mautic versions prior to 3.3.4; versions prior to 4.0.0.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Reported by Michael Rowley https://github.com/michaellrowley, Fixed by Mohit Aghera https://github.com/mohit-rocks

References

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Affected Vendor

Affected Software

Mautic
Vulnerable Versions:
unspecified

Timeline

Official Publish: August 30th, 2021
Last Modified: September 16th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

Weaknesses (CWE)

CWE-327

MITRE ATT&CK TTPs

T1040 Network Sniffing
Credential Access
T1552 Unsecured Credentials
Credential Access
T1557 Adversary-in-the-Middle
Collection
T1078 Valid Accounts
Persistence
T1041 Exfiltration Over C2 Channel
Exfiltration