Cesanta MJS 2.22.0 getprop_builtin_foreign buffer overflow

HistoryDiffrelatejsonxmlCTI

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.
7.6	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Cesanta MJS 2.22.0. Affected by this vulnerability is the function getprop_builtin_foreign. The manipulation leads to buffer overflow. This vulnerability is documented as CVE-2023-50044. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Cesanta MJS 2.22.0. This issue affects the function getprop_builtin_foreign. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Buffer Overflow vulnerability in Cesanta MJS version 2.22.0, allows attackers to execute arbitrary code, cause a denial of service (Dos), and obtain sensitive information via segmentation fault can occur in getprop_builtin_foreign when input string includes a name of Built-in APIs.

The weakness was released 12/20/2023. The advisory is shared at github.com. The identification of this vulnerability is CVE-2023-50044 since 12/04/2023. Technical details are known, but no exploit is available.

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

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Productinfo

Vendor

Cesanta

Name

Version

2.22.0

License

commercial

Website

Product: https://github.com/cesanta/mjs/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.6

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

12/04/2023 🔍
12/20/2023 +16 days 🔍
12/20/2023 +0 days 🔍
01/13/2024 +24 days 🔍

Sourcesinfo

Product: github.com

Advisory: 254
Status: Confirmed

CVE: CVE-2023-50044 (🔍)
GCVE (CVE): GCVE-0-2023-50044
GCVE (VulDB): GCVE-100-248501

Entryinfo

Created: 12/20/2023 10:23
Updated: 01/13/2024 13:39
Changes: 12/20/2023 10:23 (38), 01/13/2024 13:33 (2), 01/13/2024 13:39 (11)
Complete: 🔍
Cache ID: 216::103