FortiOS FortiWeb/FortiOS/FortiSwitch/FortiProxy Session Management Cookie signature verification

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in FortiOS FortiWeb, FortiOS, FortiSwitch and FortiProxy. Affected is an unknown function of the component Session Management Cookie Handler. This manipulation causes signature verification. The identification of this vulnerability is CVE-2021-43074. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in FortiOS FortiWeb, FortiOS, FortiSwitch and FortiProxy (Firewall Software) (affected version not known). It has been declared as problematic. Affected by this vulnerability is some unknown functionality of the component Session Management Cookie Handler. The manipulation with an unknown input leads to a signature verification vulnerability. The CWE definition for the vulnerability is CWE-347. The product does not verify, or incorrectly verifies, the cryptographic signature for data. As an impact it is known to affect confidentiality. The summary by CVE is:

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.

The weakness was shared 02/16/2023. The advisory is shared at fortiguard.com. This vulnerability is known as CVE-2021-43074 since 10/28/2021. Neither technical details nor an exploit are publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 4.3
CNA Vector (Fortinet, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Signature verification
CWE: CWE-347 / CWE-345
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/28/2021 🔍
02/16/2023 +476 days 🔍
02/16/2023 +0 days 🔍
02/16/2023 +0 days 🔍

Sourcesinfo

Advisory: fortiguard.com
Status: Confirmed

CVE: CVE-2021-43074 (🔍)
GCVE (CVE): GCVE-0-2021-43074
GCVE (VulDB): GCVE-100-221209

Entryinfo

Created: 02/16/2023 21:57
Changes: 02/16/2023 21:57 (47)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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