CVE-2013-6401

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2014-03-21 · updated 2026-06-17
Weakness: CWE-310

Description

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.

Affected products

Jansson Project Jansson: through 2.4; 2.0, 2.0.1, 2.1, 2.2, 2.2.1, 2.3 (+1)

References

http://comments.gmane.org/gmane.comp.security.oss.general/12099
http://lists.opensuse.org/opensuse-updates/2014-03/msg00057.html
https://bugzilla.redhat.com/show_bug.cgi?id=1035538
https://github.com/akheron/jansson/commit/8f80c2d83808150724d31793e6ade92749b1faa4
http://comments.gmane.org/gmane.comp.security.oss.general/12099
http://lists.opensuse.org/opensuse-updates/2014-03/msg00057.html
https://bugzilla.redhat.com/show_bug.cgi?id=1035538
https://github.com/akheron/jansson/commit/8f80c2d83808150724d31793e6ade92749b1faa4

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