VDB-178660 · CVE-2021-24119 · Nessus 240979

ARM Mbed TLS 2.24.0 BASE64 PEM File Decoding information exposure

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.
3.5	$0-$5k	0.00

Summaryinfo

A vulnerability was found in ARM Mbed TLS 2.24.0. It has been declared as problematic. This impacts an unknown function of the component BASE64 PEM File Decoding. Executing a manipulation can lead to information exposure. This vulnerability is registered as CVE-2021-24119. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as problematic was found in ARM Mbed TLS 2.24.0. This vulnerability affects some unknown processing of the component BASE64 PEM File Decoding. The manipulation with an unknown input leads to a information exposure vulnerability. The CWE definition for the vulnerability is CWE-203. The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not. As an impact it is known to affect confidentiality.

The weakness was published 07/14/2021. The advisory is shared for download at github.com. This vulnerability was named CVE-2021-24119. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

The vulnerability scanner Nessus provides a plugin with the ID 240979 (Debian dla-4236 : libmbedcrypto3 - security update), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (240979). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Mbed TLS

Version

2.24.0

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.6
VulDB Meta Temp Score: 3.6

VulDB Base Score: 2.2
VulDB Temp Score: 2.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.9
NVD Vector: 🔍

CVSSv2info

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

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Information exposure
CWE: CWE-203 / CWE-200 / CWE-284
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: 240979
Nessus Name: Debian dla-4236 : libmbedcrypto3 - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/14/2021 🔍
07/14/2021 +180 days 🔍
07/14/2021 +0 days 🔍
11/04/2025 +1574 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2021-24119 (🔍)

GCVE (CVE): GCVE-0-2021-24119
GCVE (VulDB): GCVE-100-178660

Entryinfo

Created: 07/14/2021 19:05
Updated: 11/04/2025 05:42
Changes: 07/14/2021 19:05 (36), 07/18/2021 14:03 (2), 07/01/2025 04:44 (16), 11/04/2025 05:42 (19)
Complete: 🔍
Cache ID: 216::103