Jansson up to 2.4 cryptographic issue

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Jansson up to 2.4. Affected is an unknown function. The manipulation leads to cryptographic issue. This vulnerability is referenced as CVE-2013-6401. No exploit is available.

Detailsinfo

A vulnerability was found in Jansson up to 2.4. It has been rated as problematic. This issue affects an unknown functionality. The manipulation with an unknown input leads to a cryptographic issue vulnerability. Using CWE to declare the problem leads to CWE-310. Impacted is availability. The summary by CVE is:

Jansson, possibly 2.4 and earlier, does not restrict the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via a crafted JSON document.

The weakness was published 03/20/2014 by Florian Weimer (Website). The advisory is shared at github.com. The identification of this vulnerability is CVE-2013-6401 since 11/04/2013. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1600 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 73166 (Fedora 19 : jansson-2.6-1.fc19 (2014-3782)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 166872 (OpenSuSE Security Update for libjansson (openSUSE-SU-2014:0394-1)).

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 databases at X-Force (91065), Tenable (73166), SecurityFocus (BID 65503†), Vulnerability Center (SBV-43807†) and CERT Bund (WID-SEC-2025-2843). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • IBM DataPower Gateway

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Cryptographic issue
CWE: CWE-310
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: 73166
Nessus Name: Fedora 19 : jansson-2.6-1.fc19 (2014-3782)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 867632
OpenVAS Name: Fedora Update for jansson FEDORA-2014-3778
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

11/04/2013 🔍
02/12/2014 +100 days 🔍
02/12/2014 +0 days 🔍
03/20/2014 +36 days 🔍
03/20/2014 +0 days 🔍
03/25/2014 +5 days 🔍
03/30/2014 +5 days 🔍
03/24/2015 +359 days 🔍
05/08/2026 +4063 days 🔍

Sourcesinfo

Advisory: 8f80c2d83808150724d31793e6ade92749b1faa4
Researcher: Florian Weimer
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-6401 (🔍)
GCVE (CVE): GCVE-0-2013-6401
GCVE (VulDB): GCVE-100-66725
X-Force: 91065
SecurityFocus: 65503 - Jansson Predictable Hash Collisions Denial of Service Vulnerability
Vulnerability Center: 43807 - Jansson Prior to 2.4 Remote DoS Vulnerability via a Crafted JSON Document, Medium
CERT Bund: WID-SEC-2025-2843 - IBM DataPower Gateway (Jansson): Schwachstelle ermöglicht Denial of Service

Entryinfo

Created: 03/24/2015 15:54
Updated: 05/08/2026 15:56
Changes: 03/24/2015 15:54 (62), 05/24/2017 10:47 (5), 02/06/2022 07:40 (4), 02/06/2022 07:46 (1), 12/23/2024 11:54 (25), 12/15/2025 14:31 (7), 05/08/2026 15:56 (2)
Complete: 🔍
Cache ID: 216::103

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