The int_x509_param_set_hosts function in lib/libcrypto/x509/x509_vpm.c in LibreSSL 2.7.0 before 2.7.1 does not support a certain special case of a zero name length, which causes silent omission of hostname verification, and consequently allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate. NOTE: the LibreSSL documentation indicates that this special case is supported, but the BoringSSL documentation does not.
结论预警: CVE-2018-8970 综合评估为中等风险(50.9/100):CVSS 技术影响为高级,利用概率(EPSS 1.06%) 强制指令: 梳理受影响资产并纳入修补计划。
风险随态势动态变化;本站持续评估并同步更新本页展示内容。
EPSS 日更估计相对被利用可能性;百分位表示该 CVE 在已评分漏洞中的相对排名(越高表示相对更严重)。
| # | 日期 | 旧 EPSS 分数 | 新 EPSS 分数 | 变化(新 − 旧) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.71% | 1.06% | +0.34% |
| 2 | 2026-03-04 | 0.37% | 0.71% | +0.34% |
| 3 | 2026-03-01 | — | 0.37% | — |
完整 EPSS 历史 (共 39 条)
该 CVE 的 CVSS 指标。
| 底座分 | 版本 | 严重度 | 向量 | 可利用性 | 影响 | 分数来源 |
|---|---|---|---|---|---|---|
| 7.4 | 3.0 | HIGH |
|
2.2 | 5.2 | [email protected] |
| 5.8 | 2.0 | MEDIUM |
|
8.6 | 4.9 | [email protected] |
| URL | 标签 |
|---|---|
| https://boringssl.googlesource.com/boringssl/+/e759a9cd84198613199259dbed401f4951747cff | Third Party Advisory |
| https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.7.1-relnotes.txt | Vendor Advisory |
| https://github.com/libressl-portable/openbsd/commit/0654414afcce51a16d35d05060190a3ec4618d42 | Patch Third Party Advisory |