漏洞信息
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Vulnerability Title
hashcat through 7.1.2 Heap Buffer Overflow in outfile_write() via Oversized Username
Vulnerability Description
hashcat contains a heap-based buffer overflow (out-of-bounds write) in the outfile_write() function in src/outfile.c. When assembling output into a fixed-size buffer (HCBUFSIZ_LARGE, ~16 MB), the function sequentially appends the username, separator, hash, and plaintext via memcpy without validating that the accumulated length stays within the buffer capacity. When run with --username --show against a crafted hash file containing an oversized username that nearly fills the buffer, the total assembled output exceeds the buffer, causing a heap buffer overflow that can corrupt memory and crash the process.
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Vulnerability Title
hashcat 缓冲区错误漏洞
Vulnerability Description
hashcat是hashcat团队的一款密码恢复工具。 hashcat 7.1.2及之前版本存在缓冲区错误漏洞,该漏洞源于src/outfile.c文件中的outfile_write()函数存在堆缓冲区溢出(越界写入),在将用户名、分隔符、哈希和明文通过memcpy依次追加到固定大小缓冲区时未验证累积长度,可能导致内存损坏和进程崩溃。
CVSS Information
N/A
Vulnerability Type
N/A