VDB-251682 · CVE-2023-52353 · Issue 8654

mbed TLS up to 3.5.1 mbedtls_ssl_session_reset session fixiation

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.
6.7	$0-$5k	0.00

Summaryinfo

A vulnerability was found in mbed TLS up to 3.5.1 and classified as critical. This affects the function mbedtls_ssl_session_reset. The manipulation results in an unknown weakness. This vulnerability is reported as CVE-2023-52353. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in mbed TLS up to 3.5.1. It has been classified as critical. CWE is classifying the issue as CWE-384. Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions. The impact remains unknown. CVE summarizes:

An issue was discovered in Mbed TLS through 3.5.1. In mbedtls_ssl_session_reset, the maximum negotiable TLS version is mishandled. For example, if the last connection negotiated TLS 1.2, then 1.2 becomes the new maximum.

The weakness was disclosed 01/22/2024 as 8654. The advisory is available at github.com. This vulnerability is traded as CVE-2023-52353 since 01/21/2024. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 211939 (CBL Mariner 2.0 Security Update: hvloader (CVE-2023-52353)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.6.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (211939). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

mbed TLS

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.7

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

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: Session fixiation
CWE: CWE-384
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Nessus ID: 211939
Nessus Name: CBL Mariner 2.0 Security Update: hvloader (CVE-2023-52353)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: mbed TLS 3.6.0

Timelineinfo

01/21/2024 🔍
01/22/2024 +1 days 🔍
01/22/2024 +0 days 🔍
02/03/2026 +743 days 🔍

Sourcesinfo

Advisory: 8654
Status: Confirmed

CVE: CVE-2023-52353 (🔍)
GCVE (CVE): GCVE-0-2023-52353
GCVE (VulDB): GCVE-100-251682

Entryinfo

Created: 01/22/2024 07:02
Updated: 02/03/2026 14:59
Changes: 01/22/2024 07:02 (35), 01/22/2024 07:03 (2), 02/16/2024 07:49 (12), 11/28/2024 11:51 (17), 05/31/2025 02:47 (1), 02/03/2026 14:56 (2), 02/03/2026 14:59 (4)
Complete: 🔍
Committer: lywand
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.