Vulnerabilities > CVE-2013-6401 - Cryptographic Issues vulnerability in Jansson Project Jansson
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
PARTIAL Summary
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.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 8 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Signature Spoofing by Key Recreation An attacker obtains an authoritative or reputable signer's private signature key by exploiting a cryptographic weakness in the signature algorithm or pseudorandom number generation and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.
Nessus
NASL family Fedora Local Security Checks NASL id FEDORA_2014-3778.NASL description Florian Weimer of the Red Hat Product Security Team found that the hashing implementation in Jansson, a library for encoding, decoding and manipulating JSON data, was susceptible to predictable hash collisions. A remote attacker could use this flaw to cause an application using Jansson to use an excessive amount of CPU time by sending a crafted JSON document containing a large number of parameters whose names map to the same hash value. (CVE-2013-6401) Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-03-17 modified 2014-03-25 plugin id 73165 published 2014-03-25 reporter This script is Copyright (C) 2014-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/73165 title Fedora 20 : jansson-2.6-1.fc20 (2014-3778) NASL family Fedora Local Security Checks NASL id FEDORA_2014-3782.NASL description Florian Weimer of the Red Hat Product Security Team found that the hashing implementation in Jansson, a library for encoding, decoding and manipulating JSON data, was susceptible to predictable hash collisions. A remote attacker could use this flaw to cause an application using Jansson to use an excessive amount of CPU time by sending a crafted JSON document containing a large number of parameters whose names map to the same hash value. (CVE-2013-6401) Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-03-17 modified 2014-03-25 plugin id 73166 published 2014-03-25 reporter This script is Copyright (C) 2014-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/73166 title Fedora 19 : jansson-2.6-1.fc19 (2014-3782) NASL family SuSE Local Security Checks NASL id OPENSUSE-2014-224.NASL description libjansson was updated to fix a hash table collission CPU usage denial of service issue, when an attacker can supply his own JSON file. last seen 2020-06-05 modified 2014-06-13 plugin id 75299 published 2014-06-13 reporter This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/75299 title openSUSE Security Update : libjansson (openSUSE-SU-2014:0394-1)