漏洞信息
尽管我们使用了先进的大模型技术,但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性,但请您根据实际情况进行核实和判断。
Vulnerability Title
libssh2 Heap Out-of-Bounds Read via publickey subsystem
Vulnerability Description
libssh2 through 1.11.1, fixed in commit a13bb6c, contains a missing bounds check vulnerability that allows a malicious SSH server to trigger an arbitrary-length heap out-of-bounds read and a free of an uninitialized pointer via the publickey subsystem. In libssh2_publickey_list_fetch(), the version 1 response parser reads a server-controlled comment_len value and advances the parse pointer without verifying sufficient bytes remain in the buffer, causing the out-of-bounds read to leak heap pointers from adjacent allocations defeating ASLR, followed by heap allocator state corruption when the error cleanup path frees an uninitialized pointer from a non-zeroed realloc() region.
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Vulnerability Type
跨界内存读
Vulnerability Title
libssh2 缓冲区错误漏洞
Vulnerability Description
libssh2是libssh2团队开源的一款实现SSH2协议的客户端C库。 libssh2 1.11.1及之前版本存在安全漏洞,该漏洞源于libssh2的publickey子系统缺少边界检查,允许恶意SSH服务器触发任意长度堆越界读取和释放未初始化指针,可能导致堆指针泄露和堆分配器状态损坏。
CVSS Information
N/A
Vulnerability Type
N/A