CVE-2017-11103
heimdal - security update
描述
Heimdal before 7.4 allows remote attackers to impersonate services with Orpheus' Lyre attacks because it obtains service-principal names in a way that violates the Kerberos 5 protocol specification. In _krb5_extract_ticket() the KDC-REP service name must be obtained from the encrypted version stored in 'enc_part' instead of the unencrypted version stored in 'ticket'. Use of the unencrypted version provides an opportunity for successful server impersonation and other attacks. NOTE: this CVE is only for Heimdal and other products that embed Heimdal code; it does not apply to other instances in which this part of the Kerberos 5 protocol specification is violated.
如何修補 CVE-2017-11103
要修補 CVE-2017-11103,請將受影響套件升級到下列已修補版本。
- —升級至 7.4.0-r0 或更新版本
- —升級至 4.2.14-r4 或更新版本
CVE-2017-11103 正在被利用嗎?
中等 — EPSS 為 5.1%,可持續追蹤但非最高優先。
受影響套件(2)
- from 0, < 7.4.0-r0
- >= 4.0.0, < 4.2.14-r4
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |