VDB-123050 · CVE-2018-1000216 · Issue 241

Dave Gamble cJSON Library up to 1.7.2 JSON Data double free

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 was found in Dave Gamble cJSON Library up to 1.7.2 and classified as problematic. This issue affects some unknown processing. Such manipulation as part of JSON Data leads to double free. This vulnerability is referenced as CVE-2018-1000216. It is possible to launch the attack remotely. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Dave Gamble cJSON Library up to 1.7.2 (Software Library). Affected by this issue is an unknown code. The manipulation as part of a JSON Data leads to a double free vulnerability. Using CWE to declare the problem leads to CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. Impacted is availability. CVE summarizes:

Dave Gamble cJSON version 1.7.2 and earlier contains a CWE-415: Double Free vulnerability in cJSON library that can result in Possible crash or RCE. This attack appear to be exploitable via Attacker must be able to force victim to print JSON data, depending on how cJSON library is used this could be either local or over a network. This vulnerability appears to have been fixed in 1.7.3.

The bug was discovered 02/07/2018. The weakness was published 08/20/2018 (GitHub Repository). The advisory is available at github.com. This vulnerability is handled as CVE-2018-1000216 since 08/20/2018. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

The vulnerability was handled as a non-public zero-day exploit for at least 194 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 1.7.3 eliminates this vulnerability.

Similar entries are available at VDB-123051 and VDB-123049. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Software Library

Vendor

Dave Gamble

Name

cJSON Library

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.4

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
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: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Double free
CWE: CWE-415 / 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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: cJSON Library 1.7.3

Timelineinfo

02/07/2018 🔍
08/20/2018 +193 days 🔍
08/20/2018 +0 days 🔍
08/20/2018 +0 days 🔍
08/21/2018 +1 days 🔍
07/22/2025 +2527 days 🔍

Sourcesinfo

Advisory: 241
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-1000216 (🔍)
GCVE (CVE): GCVE-0-2018-1000216
GCVE (VulDB): GCVE-100-123050
See also: 🔍

Entryinfo

Created: 08/21/2018 06:50
Updated: 07/22/2025 23:05
Changes: 08/21/2018 06:50 (60), 03/16/2020 21:17 (2), 05/02/2023 15:05 (4), 07/22/2025 23:05 (20)
Complete: 🔍
Cache ID: 216::103

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