What is CVE-2021-27791?

CVE-2021-27791 is a medium-severity vulnerability in Broadcom Fabric Operating System, classified under Out-of-bounds Read. CVSS score: 5.4/10. Published 2021-08-12.

How severe is CVE-2021-27791?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Out-of-bounds Read in Broadcom Fabric Operating System

CVE-2021-27791

The function that is used to parse the Authentication header in Brocade Fabric OS Web application service before Brocade Fabric OS v9.0.1a and v8.2.3a fails to properly process a malformed authentication header from the client, resulting in reading memory addresses outside the intended range. An unauthenticated attacker could discover a request, which could bypass the authentication process.

Vulnerability class: Buffer Overflow

EPSS: 0.006 (45.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Broadcom Fabric_operating_system
N/a Brocade Fabric Os — versions Brocade Fabric OS before Brocade Fabric OS v9.0.1a and v8.2.3a

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

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

Frequently asked questions

What is CVE-2021-27791?: CVE-2021-27791 is a medium-severity vulnerability in Broadcom Fabric Operating System, classified under Out-of-bounds Read. CVSS score: 5.4/10. Published 2021-08-12.
How severe is CVE-2021-27791?: Medium severity. CVSS v3 base score is 5.4 out of 10.