CVE-2026-25075 漏洞深度分析

漏洞概述

CVE 编号: CVE-2026-25075
CVSS 评分: 8.7(HIGH)
CVSS 向量: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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-191,CWE-476
漏洞状态: Deferred
发布时间: 2026-03-23T19:16:39.313
最后更新: 2026-07-14T16:16:53.440

漏洞描述

strongSwan versions 4.5.0 prior to 6.0.5 contain an integer underflow vulnerability in the EAP-TTLS AVP parser that allows unauthenticated remote attackers to cause a denial of service by sending crafted AVP data with invalid length fields during IKEv2 authentication. Attackers can exploit the failure to validate AVP length fields before subtraction to trigger excessive memory allocation or NULL pointer dereference, crashing the charon IKE daemon.

影响分析

此漏洞的具体影响取决于实际利用场景。"

修复建议

  1. 及时关注厂商发布的安全更新和补丁
  2. 升级受影响组件到最新版本
  3. 如无法立即升级,参考厂商提供的临时缓解措施
  4. 加强网络访问控制和监控

参考链接

  1. https://www.strongswan.org/blog/2026/03/23/strongswan-6.0.5-released.html
  2. https://www.strongswan.org/blog/2026/03/23/strongswan-vulnerability-(cve-2026-25075).html
  3. https://www.vulncheck.com/advisories/strongswan-eap-ttls-avp-parsing-integer-underflow
  4. https://y637f9qq2x.com/posts/cve-2026-25075/
  5. https://lists.debian.org/debian-lts-announce/2026/03/msg00016.html