CyberRota Analysis
AI-GeneratedThe cJSON library, up to version 1.7.19, is vulnerable to a denial-of-service attack due to uncontrolled recursion when processing untrusted JSON Patch documents. Attackers can exploit this vulnerability by crafting a malicious patch that causes excessive recursion, leading to stack exhaustion and potential application crashes. Organizations utilizing cJSON in their applications should prioritize patching this vulnerability to mitigate the risk of service disruption.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
cJSON through 1.7.19 is vulnerable to uncontrolled recursion leading to stack exhaustion when an untrusted RFC 6902 JSON Patch is applied via cJSONUtils_ApplyPatches() or cJSONUtils_ApplyPatchesCaseSensitive(). A patch containing add and copy operations grafts duplicated subtrees to amplify document depth beyond the parser's nesting limit: cJSON_Delete() recurses with no depth bound, and the cJSON_Duplicate() guard CJSON_CIRCULAR_LIMIT is set to 10000, ten times the parser's 1000-level nesting limit and high enough to overflow a default thread stack. An attacker who can supply the patch document can crash the process, resulting in denial of service.
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