#VU32546 Cryptographic issues in json-c - CVE-2013-6371

Vulnerability identifier: #VU32546

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2013-6371

CWE-ID: CWE-310

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
json-c
Other software / Other software solutions

Vendor: json-c

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

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

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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.