CVE-2021-43074

Description

An improper verification of cryptographic signature vulnerability [CWE-347] in FortiWeb 6.4 all versions, 6.3.16 and below, 6.2 all versions, 6.1 all versions, 6.0 all versions; FortiOS 7.0.3 and below, 6.4.8 and below, 6.2 all versions, 6.0 all versions; FortiSwitch 7.0.3 and below, 6.4.10 and below, 6.2 all versions, 6.0 all versions; FortiProxy 7.0.1 and below, 2.0.7 and below, 1.2 all versions, 1.1 all versions, 1.0 all versions may allow an attacker to decrypt portions of the administrative session management cookie if able to intercept the latter.

Remediation

Solution:

  • Upgrade to FortiOS version 7.0.7 or above. Upgrade to FortiOS version 6.4.9 or above. Upgrade to FortiWeb version 7.0.0 or above. upgrade to FortiWeb version 6.3.17 or above. Upgrade to FortiProxy version 7.0.7 or above. Upgrade to FortiProxy version 2.0.8 or above. Upgrade to FortiSwitch version 7.2.0 or above. Upgrade to FortiSwitch version 7.0.4 or above. Upgrade to FortiSwitch version 6.4.11 or above.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.09%
Vendor Advisory fortiguard.com
Affected: Fortinet FortiSwitch
Affected: Fortinet FortiWeb
Affected: Fortinet FortiProxy
Affected: Fortinet FortiOS
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2021-43074?
CVE-2021-43074 has been scored as a medium severity vulnerability.
How to fix CVE-2021-43074?
To fix CVE-2021-43074: Upgrade to FortiOS version 7.0.7 or above. Upgrade to FortiOS version 6.4.9 or above. Upgrade to FortiWeb version 7.0.0 or above. upgrade to FortiWeb version 6.3.17 or above. Upgrade to FortiProxy version 7.0.7 or above. Upgrade to FortiProxy version 2.0.8 or above. Upgrade to FortiSwitch version 7.2.0 or above. Upgrade to FortiSwitch version 7.0.4 or above. Upgrade to FortiSwitch version 6.4.11 or above.
Is CVE-2021-43074 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-43074 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-43074?
CVE-2021-43074 affects Fortinet FortiSwitch, Fortinet FortiWeb, Fortinet FortiProxy, Fortinet FortiOS.
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