漏洞信息
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Vulnerability Title
Oj: intern.c form_attr has an uninitialized stack read
Vulnerability Description
Oj (Optimized JSON) is a JSON parser and Object marshaller packaged as a Ruby gem. In versions prior to 3.17.3, Oj.load in :object mode reads uninitialized stack memory (and, for long keys, reads out of bounds) when parsing a JSON object whose key is 254 bytes or longer. The interned bytes can surface to the caller, disclosing process stack memory. In ext/oj/intern.c, form_attr() handles the long-key path by allocating a heap buffer, `b`, populating it with the attribute name, and then freeing it — but it passed the uninitialized stack buffer buf (not b) to rb_intern3(). rb_intern3 therefore reads len + 1 bytes of uninitialized stack memory. When the key length is >= 256, it also reads out of bounds past the 256-byte buf. The resulting bytes are interned and can reach the caller via the produced Symbol or via the EncodingError message raised on invalid UTF-8, leaking process stack contents. This issue has been fixed in version 3.17.3.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Vulnerability Type
跨界内存读
Vulnerability Title
Peter Ohler oj 缓冲区错误漏洞
Vulnerability Description
Peter Ohler oj是Peter Ohler个人开发者的一个高效JSON解析与代码生成的前端库。 Peter Ohler oj 3.17.3之前版本存在安全漏洞,该漏洞源于当解析键长254字节或更长的JSON对象时,Oj.load在:object模式下读取未初始化的栈内存(对于长键,越界读取),可能导致泄露进程栈内存。
CVSS Information
N/A
Vulnerability Type
N/A