Medium severity · published Aug 12, 2021
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…
5.4
CVSS
0.6%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
Fabric Operating System · Broadcom
8.2.1 before 8.2.3a; 9.0.0 before 9.0.1a · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-27791
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-27791
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210819-0002/
Vendor Advisory
https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2021-1491
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