Brocade Fabric OS prior 8.2.3a/9.0.1a Authentication Header buffer overflow
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.0 | $0-$5k | 0.00 |
A vulnerability, which was classified as critical, has been found in Brocade Fabric OS. Affected by this issue is an unknown code block of the component Authentication Header Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability.
The weakness was shared 08/13/2021 as brocade-security-advisory-2021-1491. The advisory is available at broadcom.com. This vulnerability is handled as CVE-2021-27791. The technical details are unknown and an exploit is not available.
Upgrading to version 8.2.3a or 9.0.1a eliminates this vulnerability.
Product
Vendor
Name
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.3VulDB Meta Temp Score: 6.0
VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Buffer overflowCWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Partially
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Fabric OS 8.2.3a/9.0.1a
Timeline
02/26/2021 🔍08/13/2021 🔍
08/13/2021 🔍
08/18/2021 🔍
Sources
Advisory: brocade-security-advisory-2021-1491Status: Confirmed
CVE: CVE-2021-27791 (🔍)
Entry
Created: 08/13/2021 07:59Updated: 08/18/2021 02:42
Changes: 08/13/2021 07:59 (38), 08/18/2021 02:42 (2)
Complete: 🔍
Cache ID: 3:3CF:103
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