Fortinet FortiOS up to 6.0.4 SSL VPN Web Portal err Reflected cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Fortinet FortiOS 6.0.0/6.0.1/6.0.2/6.0.3/6.0.4. It has been classified as problematic. Affected is an unknown function of the component SSL VPN Web Portal. The manipulation of the argument err as part of HTTP Requests leads to cross site scripting (Reflected). This vulnerability is traded as CVE-2019-5588. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Fortinet FortiOS 6.0.0/6.0.1/6.0.2/6.0.3/6.0.4 (Firewall Software) and classified as problematic. This issue affects an unknown code block of the component SSL VPN Web Portal. The manipulation of the argument err as part of a HTTP Requests leads to a cross site scripting vulnerability (Reflected). Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

A reflected Cross-Site-Scripting (XSS) vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4 under SSL VPN web portal may allow an attacker to execute unauthorized malicious script code via the "err" parameter of the error process HTTP requests.

The weakness was shared 05/24/2019 as FG-IR-19-034 as confirmed advisory (Website). It is possible to read the advisory at fortiguard.com. The identification of this vulnerability is CVE-2019-5588 since 01/07/2019. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 6.0.5 or 6.2.0 eliminates this vulnerability. It is possible to mitigate the problem by applying the configuration setting config vpn ssl settings; unset source-interface; end. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The entry VDB-135957 is related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Name: Reflected
Class: Cross site scripting / Reflected
CWE: CWE-79 / CWE-94 / CWE-74
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: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: FortiOS 6.0.5/6.2.0
Config: config vpn ssl settings; unset source-interface; end

Timelineinfo

01/07/2019 🔍
05/24/2019 +137 days 🔍
05/24/2019 +0 days 🔍
06/05/2019 +12 days 🔍
09/28/2023 +1576 days 🔍

Sourcesinfo

Vendor: fortinet.com

Advisory: FG-IR-19-034
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2019-5588 (🔍)
GCVE (CVE): GCVE-0-2019-5588
GCVE (VulDB): GCVE-100-135959
SecurityFocus: 108618

See also: 🔍

Entryinfo

Created: 06/05/2019 09:19
Updated: 09/28/2023 08:18
Changes: 06/05/2019 09:19 (66), 06/19/2020 12:33 (1), 09/28/2023 08:18 (4)
Complete: 🔍
Cache ID: 216::103

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

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