discourse-encrypt on Discourse Topic Title 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 has been found in discourse-encrypt on Discourse and classified as problematic. This affects an unknown function of the component Topic Title Handler. Performing a manipulation results in cross site scripting. This vulnerability is identified as CVE-2023-43657. The attack can be initiated remotely. There is not any exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability classified as problematic has been found in discourse-encrypt on Discourse (the affected version unknown). This affects an unknown part of the component Topic Title Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity. The summary by CVE is:

discourse-encrypt is a plugin that provides a secure communication channel through Discourse. Improper escaping of encrypted topic titles could lead to a cross site scripting (XSS) issue when a site has content security policy (CSP) headers disabled. Having CSP disabled is a non-default configuration, and having it disabled with discourse-encrypt installed will result in a warning in the Discourse admin dashboard. This has been fixed in commit `9c75810af9` which is included in the latest version of the discourse-encrypt plugin. Users are advised to upgrade. Users unable to upgrade should ensure that CSP headers are enabled and properly configured.

The weakness was released 09/28/2023 as GHSA-5fh6-wp7p-xx7v. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2023-43657 since 09/20/2023. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Applying the patch 9c75810af9a474d7edaec67dea66f852c0ba1f4e is able to eliminate this problem. The bugfix is ready for download at github.com.

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

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 2.0
VulDB Temp Score: 1.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CNA Base Score: 7.2
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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

Exploitinginfo

Class: Cross site scripting
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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 9c75810af9a474d7edaec67dea66f852c0ba1f4e

Timelineinfo

09/20/2023 🔍
09/28/2023 +8 days 🔍
09/28/2023 +0 days 🔍
10/21/2023 +23 days 🔍

Sourcesinfo

Advisory: GHSA-5fh6-wp7p-xx7v
Status: Confirmed

CVE: CVE-2023-43657 (🔍)
GCVE (CVE): GCVE-0-2023-43657
GCVE (VulDB): GCVE-100-240831

Entryinfo

Created: 09/28/2023 23:28
Updated: 10/21/2023 17:25
Changes: 09/28/2023 23:28 (51), 10/21/2023 17:25 (11)
Complete: 🔍
Cache ID: 216::103

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

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