CVE-2021-27790

HIGHCVSS 7.8/10EPSS 0.46%

Last modified

CVE-2021-27790 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. The command ipfilter in Brocade Fabric OS before Brocade Fabric OS v.9.0.1a, v8.2.3, and v8.2.0_CBN4, and v7.4.2h uses unsafe string function to process user input. Authenticated attackers can abuse this vulnerability to exploit stack-based buffer overflows, allowing execution of arbitrary code as the root user account.. EPSS estimates a 0.46% chance of exploitation in the next 30 days.

Description

The command ipfilter in Brocade Fabric OS before Brocade Fabric OS v.9.0.1a, v8.2.3, and v8.2.0_CBN4, and v7.4.2h uses unsafe string function to process user input. Authenticated attackers can abuse this vulnerability to exploit stack-based buffer overflows, allowing execution of arbitrary code as the root user account.

Metrics

CVSS 3.1
7.8/10

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

EPSS Probability
0.46%

36.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
BroadcomFabric Operating System< 7.4.2h
BroadcomFabric Operating System>= 8.0.0, < 8.2.0_cbn4
BroadcomFabric Operating System>= 8.2.1, < 8.2.3
BroadcomFabric Operating System>= 9.0.0, < 9.0.1a

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-27790?
The command ipfilter in Brocade Fabric OS before Brocade Fabric OS v.9.0.1a, v8.2.3, and v8.2.0_CBN4, and v7.4.2h uses unsafe string function to process user input. Authenticated attackers can abuse this vulnerability to exploit stack-based buffer overflows, allowing execution of arbitrary code as the root user account.
How severe is CVE-2021-27790?
CVE-2021-27790 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.
How do I fix CVE-2021-27790?
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-2021-27790?

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

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Source: NVD / NIST