Jansson up to 2.7 JSON Data input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Jansson up to 2.7. It has been rated as problematic. The affected element is an unknown function of the component JSON Data Handler. Performing a manipulation results in input validation. This vulnerability was named CVE-2016-4425. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Jansson up to 2.7. It has been classified as critical. This affects an unknown function of the component JSON Data Handler. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

Jansson 2.7 and earlier allows context-dependent attackers to cause a denial of service (deep recursion, stack consumption, and crash) via crafted JSON data.

The weakness was presented 05/17/2016 (Website). It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2016-4425 since 05/02/2016. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 91133 (Debian DLA-471-1 : jansson security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276169 (Fedora Security Update for jansson (FEDORA-2016-59fda81436)).

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (91133). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 91133
Nessus Name: Debian DLA-471-1 : jansson security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for jansson FEDORA-2016-cc7f19cb5b
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

05/02/2016 🔍
05/13/2016 +11 days 🔍
05/16/2016 +3 days 🔍
05/17/2016 +1 days 🔍
05/17/2016 +0 days 🔍
05/18/2016 +1 days 🔍
12/04/2025 +3487 days 🔍

Sourcesinfo

Advisory: 282
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-4425 (🔍)
GCVE (CVE): GCVE-0-2016-4425
GCVE (VulDB): GCVE-100-87423

OVAL: 🔍

Entryinfo

Created: 05/18/2016 09:55
Updated: 12/04/2025 18:25
Changes: 05/18/2016 09:55 (57), 11/30/2018 11:58 (12), 08/19/2022 15:19 (5), 10/01/2024 22:50 (16), 12/04/2025 18:25 (3)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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