🟠 《高危安全漏洞：CVE-2026-63090》

CVSS 评分: 高危（8.7）　　状态: Received　　发布时间: 2026-07-20

漏洞描述

ProFTPD before 1.3.9c and 1.3.10rc3 contains a heap-based buffer overflow vulnerability in the mod_sftp module that allows authenticated low-privilege attackers to achieve arbitrary code execution by sending crafted SFTP packet fragments exceeding the 16 KB reassembly buffer in the fxp.c component. Attackers can supply oversized fragments to trigger an incorrectly conditioned reallocation, corrupt pool freelist metadata, overwrite the root_fs BSS global pointer to reference a fake filesystem struct, and redirect pr_fsio_stat() to system() via a crafted RENAME request.

🔍 技术细节

字段 值
CVE ID CVE-2026-63090
CVSS 评分 8.7 🟠
严重程度 高危
CVSS 向量 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE 分类 CWE-122
发布时间 2026-07-20
最后更新 2026-07-20
状态 Received
数据来源 disclosure@vulncheck.com

🔗 参考链接