VDB-231551 · CVE-2023-34609 · EUVD-2023-38662

flexjson 3.3 Cyclic Dependency out-of-bounds write

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.
6.8	$0-$5k	0.00

Summaryinfo

A vulnerability was found in flexjson 3.3. It has been classified as problematic. Affected by this issue is some unknown functionality of the component Cyclic Dependency Handler. The manipulation leads to an unknown weakness. This vulnerability is documented as CVE-2023-34609. There is not any exploit available.

Detailsinfo

A vulnerability was found in flexjson 3.3. It has been rated as problematic. This issue affects an unknown code block of the component Cyclic Dependency Handler. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered flexjson thru 3.3 allows attackers to cause a denial of service or other unspecified impacts via crafted object that uses cyclic dependencies.

The weakness was released 06/14/2023. It is possible to read the advisory at sourceforge.net. The identification of this vulnerability is CVE-2023-34609 since 06/07/2023. The technical details are unknown and an exploit is not publicly available.

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 EUVD (EUVD-2023-38662). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

flexjson

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.8

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

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.5
CNA 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: Out-of-bounds write
CWE: CWE-787 / 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: 🔍

Timelineinfo

06/07/2023 🔍
06/14/2023 +7 days 🔍
06/14/2023 +0 days 🔍
01/08/2026 +939 days 🔍

Sourcesinfo

Advisory: sourceforge.net
Status: Confirmed

CVE: CVE-2023-34609 (🔍)
GCVE (CVE): GCVE-0-2023-34609
GCVE (VulDB): GCVE-100-231551
EUVD: 🔍

Entryinfo

Created: 06/14/2023 17:15
Updated: 01/08/2026 13:00
Changes: 06/14/2023 17:15 (36), 07/13/2023 13:20 (12), 01/07/2025 01:32 (26), 01/08/2026 13:00 (1)
Complete: 🔍
Cache ID: 216::103