IBM478179A4FF7D7F88209674CCCA14AA5E28599D1CB2F8DECF2A69F98F78B27118Security Bulletin: Vulnerability in Fabric OS used by IBM b-type SAN directors and switches.
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
0.003 Low
EPSS
Percentile
64.6%
Summary
Public disclosed vulnerability from OpenSSL in the Fabric OS used by IBM b-type SAN directors and switches.
Vulnerability Details
CVEID:CVE-2021-3449
**DESCRIPTION:**OpenSSL is vulnerable to a denial of service, caused by a NULL pointer dereference in signature_algorithms processing. By sending a specially crafted renegotiation ClientHello message from a client, a remote attacker could exploit this vulnerability to cause the TLS server to crash.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/198752 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Affected Products and Versions
| Affected Product(s) | Version(s) |
|---|---|
| FOS | 9.X prior to 9.0.1b |
| FOS | |
| 8.X prior to 8.2.3 |
FOS
| 7.X prior to 7.4.2h
Remediation/Fixes
| Product | VRMF | Fix |
|---|---|---|
| FOS | ||
| 9.0.1b | ||
| <https://www.ibm.com/support/pages/node/6371270> | ||
| FOS | ||
| 8.2.3 | ||
<https://www.ibm.com/support/pages/node/6371270>
FOS
| 7.4.2h
|
<https://www.ibm.com/support/pages/node/6371270>
Workarounds and Mitigations
| CPE | Name | Operator | Version |
|---|---|---|---|
| fos 9.x prior to | eq | 9.0.1b | |
| fos 8.x prior to | eq | 8.2.3 | |
| fos 7.x prior to | eq | 7.4.2h |
Related
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
0.003 Low
EPSS
Percentile
64.6%