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CVE-2021-45841

HIGHCVSS 8.1/10EPSS 8.06%

Last modified

CVE-2021-45841 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. In Terramaster F4-210, F2-210 TOS 4.2.X (4.2.15-2107141517), an attacker can self-sign session cookies by knowing the target's MAC address and the user's password hash. Guest users (disabled by default) can be abused using a null/empty hash and allow an unauthenticated attacker to login as guest.. EPSS estimates a 8.06% chance of exploitation in the next 30 days.

Description

In Terramaster F4-210, F2-210 TOS 4.2.X (4.2.15-2107141517), an attacker can self-sign session cookies by knowing the target's MAC address and the user's password hash. Guest users (disabled by default) can be abused using a null/empty hash and allow an unauthenticated attacker to login as guest.

Metrics

CVSS 3.1
8.1/10

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

EPSS Probability
8.06%

94.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Terra-MasterTos4.2.15-2107141517

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-45841?
In Terramaster F4-210, F2-210 TOS 4.2.X (4.2.15-2107141517), an attacker can self-sign session cookies by knowing the target's MAC address and the user's password hash. Guest users (disabled by default) can be abused using a null/empty hash and allow an unauthenticated attacker to login as guest.
How severe is CVE-2021-45841?
CVE-2021-45841 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 8.06% probability of exploitation in the next 30 days.
How do I fix CVE-2021-45841?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-45841?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST