What is CVE-2021-27790?

CVE-2021-27790 is a high-severity vulnerability in Broadcom Fabric Operating System, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2021-08-12.

How severe is CVE-2021-27790?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Broadcom Fabric Operating System

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.

Vulnerability class: Buffer Overflow

EPSS: 0.005 (37.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Broadcom Fabric_operating_system
N/a Brocade Fabric Os — versions Brocade Fabric OS before Brocade Fabric OS v.9.0.1a, v8.2.3, and v8.2.0_CBN4, and v7.4.2h

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

sirt@brocade.com (x_refsource_MISC, Vendor Advisory)
sirt@brocade.com (x_refsource_CONFIRM, Third Party Advisory)

Frequently asked questions

What is CVE-2021-27790?: CVE-2021-27790 is a high-severity vulnerability in Broadcom Fabric Operating System, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2021-08-12.
How severe is CVE-2021-27790?: High severity. CVSS v3 base score is 7.8 out of 10.