Cryptographic issues in json-c

1) Cryptographic issues

EUVDB-ID: #VU32546

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2013-6371

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

The hash functionality in json-c before 0.12 allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted JSON data, involving collisions.

Mitigation

Install update from vendor's website.

Vulnerable software versions

json-c: 0.10 - 0.11

External links

http://lists.fedoraproject.org/pipermail/package-announce/2014-April/131845.html
http://secunia.com/advisories/57791
http://www.mandriva.com/security/advisories?name=MDVSA-2014:079
http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
http://www.securityfocus.com/bid/66715
http://bugzilla.redhat.com/show_bug.cgi?id=1032311
http://exchange.xforce.ibmcloud.com/vulnerabilities/92541
http://github.com/json-c/json-c/commit/64e36901a0614bf64a19bc3396469c66dcd0b015

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.