漏洞信息
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Vulnerability Title
MessagePack::Buffer#clear Use-After-Free that Enables Cross-Buffer Disclosure
Vulnerability Description
MessagePack for Ruby is an implementation of the MessagePack binary serialization format. Prior to 1.8.2, MessagePack::Buffer#clear in ext/msgpack/buffer.c leaves rmem_last, rmem_end, and rmem_owner stale after _msgpack_buffer_shift_chunk returns an rmem page to the shared pool, allowing a subsequent Buffer#write and a second MessagePack::Buffer to alias the page and disclose or corrupt cross-buffer data. This issue is fixed in version 1.8.2.
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Vulnerability Type
释放后使用
Vulnerability Title
MessagePack 资源管理错误漏洞
Vulnerability Description
msgpack messagepack是msgpack团队开源的一种消息序列化格式。 MessagePack 1.8.2之前版本存在资源管理错误漏洞,该漏洞源于MessagePack::Buffer#clear函数在返回rmem页到共享池后未清除rmem_last、rmem_end和rmem_owner,导致后续Buffer#write和第二个MessagePack::Buffer可能别名该页并泄露或破坏跨缓冲区数据。
CVSS Information
N/A
Vulnerability Type
N/A