#VU35696 Improper Check for Unusual or Exceptional Conditions in cJSON - CVE-2019-1010239

Vulnerability identifier: #VU35696

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-1010239

CWE-ID: CWE-754

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
cJSON
Universal components / Libraries / Libraries used by multiple products

Vendor: DaveGamble

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

DaveGamble/cJSON cJSON 1.7.8 is affected by: Improper Check for Unusual or Exceptional Conditions. The impact is: Null dereference, so attack can cause denial of service. The component is: cJSON_GetObjectItemCaseSensitive() function. The attack vector is: crafted json file. The fixed version is: 1.7.9 and later.

Mitigation
Install update from vendor's website.

Vulnerable software versions

cJSON: 1.7.8

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External links
https://github.com/DaveGamble/cJSON/commit/be749d7efa7c9021da746e685bd6dec79f9dd99b
https://github.com/DaveGamble/cJSON/issues/315

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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.