漏洞信息
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Vulnerability Title
Ruby JSON: JSON::ResumableParser#partial_value dereferences a freed input buffer and crashes on truncated duplicate-key streams
Vulnerability Description
Ruby JSON is a JSON implementation for Ruby. From 2.20.0 until 2.21.2, Ruby's JSON native C extension clears the consumed JSON::ResumableParser input buffer but leaves state.start, state.cursor, and state.end pointing into released storage. When partial_value reconstructs an incomplete object containing duplicate keys, the duplicate-key warning path calls cursor_position, which dereferences those stale pointers. This results in a heap-use-after-free and can terminate the Ruby process. An attacker who can supply JSON stream data to an application using JSON::ResumableParser may cause process termination when the application calls partial_value on incomplete attacker-controlled input containing duplicate object keys. This issue has been fixed in version 2.21.2.
CVSS Information
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
Vulnerability Type
释放后使用
Vulnerability Title
Ruby json 资源管理错误漏洞
Vulnerability Description
Ruby json是Ruby组织的一款处理JSON数据的软件。 Ruby json 2.20.0版本至2.21.2之前版本存在资源管理错误漏洞,该漏洞源于Ruby JSON原生C扩展在清除已消费的JSON::ResumableParser输入缓冲区后,state.start、state.cursor和state.end仍指向已释放的存储,导致处理包含重复键的不完整对象时发生堆释放后重用,攻击者通过向使用JSON::ResumableParser的应用程序提供恶意JSON流数据,可导致进程终止。
CVSS Information
N/A
Vulnerability Type
N/A