VDB-227557 · CVE-2023-31287 · EUVD-2023-1158

Serenity Serene/StartSharp up to 6.6.x Link Token password recovery

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.4	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Serenity Serene and StartSharp up to 6.6.x. Affected by this vulnerability is an unknown functionality of the component Link Token Handler. This manipulation causes password recovery. This vulnerability is tracked as CVE-2023-31287. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Serenity Serene and StartSharp up to 6.6.x. Affected by this vulnerability is an unknown functionality of the component Link Token Handler. The manipulation with an unknown input leads to a password recovery vulnerability. The CWE definition for the vulnerability is CWE-640. The product contains a mechanism for users to recover or change their passwords without knowing the original password, but the mechanism is weak. As an impact it is known to affect integrity, and availability. The summary by CVE is:

An issue was discovered in Serenity Serene (and StartSharp) before 6.7.0. Password reset links are sent by email. A link contains a token that is used to reset the password. This token remains valid even after the password reset and can be used a second time to change the password of the corresponding user. The token expires only 3 hours after issuance and is sent as a query parameter when resetting. An attacker with access to the browser history can thus use the token again to change the password in order to take over the account.

The weakness was disclosed 04/27/2023 as 11b9d267f840513d04b4f4d4876de7823a6e48d2. The advisory is shared at github.com. This vulnerability is known as CVE-2023-31287 since 04/27/2023. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1552 for this issue.

Upgrading to version 6.7.0 eliminates this vulnerability. Applying the patch 11b9d267f840513d04b4f4d4876de7823a6e48d2 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-1158). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Serenity

Name

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 7.8
CNA Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Password recovery
CWE: CWE-640
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Serene/StartSharp 6.7.0
Patch: 11b9d267f840513d04b4f4d4876de7823a6e48d2

Timelineinfo

04/27/2023 🔍
04/27/2023 +0 days 🔍
04/27/2023 +0 days 🔍
07/06/2025 +801 days 🔍

Sourcesinfo

Advisory: 11b9d267f840513d04b4f4d4876de7823a6e48d2
Status: Confirmed

CVE: CVE-2023-31287 (🔍)
GCVE (CVE): GCVE-0-2023-31287
GCVE (VulDB): GCVE-100-227557
EUVD: 🔍

Entryinfo

Created: 04/27/2023 07:22
Updated: 07/06/2025 18:27
Changes: 04/27/2023 07:22 (42), 05/21/2023 07:34 (11), 01/31/2025 20:41 (26), 07/06/2025 18:27 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.