漏洞信息
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Vulnerability Title
libgit2 - Unauthenticated network-reachable heap out-of-bounds read in transports/smart_pkt.c:set_data
Vulnerability Description
libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, libgit2 performs a fixed-size strncmp in set_data in src/libgit2/transports/smart_pkt.c without first verifying that the smart-protocol pkt-line capability buffer contains 14 bytes. A malicious Git server can make bytes after the pkt-line complete object-format=, causing format_str to advance beyond the pkt-line and the following memchr length calculation to underflow. The resulting heap out-of-bounds walk can crash a client during the first refs-advertisement packet over HTTP, HTTPS, SSH, or the Git protocol. This issue is fixed in versions 1.8.6 and 1.9.5.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vulnerability Type
输入验证不恰当
Vulnerability Title
libgit2 缓冲区错误漏洞
Vulnerability Description
libgit2是Libgit2团队开源的一款可嵌入的Git版本控制库。 libgit2 1.8.6之前版本和1.9.0至1.9.5之前版本存在安全漏洞,该漏洞源于src/libgit2/transports/smart_pkt.c的set_data函数中未验证缓冲区长度即执行固定大小strncmp,导致堆越界访问,可能使客户端在首次refs-advertisement包时崩溃。
CVSS Information
N/A
Vulnerability Type
N/A