Fortinet FortiOS/FortiProxy sslvpn Service bookmark null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Fortinet FortiOS and FortiProxy. Affected by this issue is some unknown functionality of the component sslvpn Service. This manipulation of the argument bookmark causes null pointer dereference. This vulnerability is tracked as CVE-2023-33306. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Fortinet FortiOS and FortiProxy (Firewall Software) (version now known) and classified as critical. Affected by this vulnerability is some unknown processing of the component sslvpn Service. The manipulation of the argument bookmark with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is:

A null pointer dereference in Fortinet FortiOS before 7.2.5, before 7.0.11 and before 6.4.13, FortiProxy before 7.2.4 and before 7.0.10 allows attacker to denial of sslvpn service via specifically crafted request in bookmark parameter.

The weakness was disclosed 06/16/2023 as FG-IR-23-015. It is possible to read the advisory at fortiguard.com. This vulnerability is known as CVE-2023-33306 since 05/22/2023. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading eliminates this vulnerability.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (Fortinet, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/22/2023 🔍
06/16/2023 +25 days 🔍
06/16/2023 +0 days 🔍
07/14/2023 +28 days 🔍

Sourcesinfo

Vendor: fortinet.com

Advisory: FG-IR-23-015
Status: Confirmed

CVE: CVE-2023-33306 (🔍)
GCVE (CVE): GCVE-0-2023-33306
GCVE (VulDB): GCVE-100-231727

Entryinfo

Created: 06/16/2023 14:23
Updated: 07/14/2023 10:58
Changes: 06/16/2023 14:23 (50), 07/14/2023 10:58 (1)
Complete: 🔍
Cache ID: 216::103

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