CVE-2019-14870
MEDIUM5.4EPSS 4.7%heimdal - security update
發布日:2019/12/10修改日:2026/4/28
描述
All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue, where the S4U (MS-SFU) Kerberos delegation model includes a feature allowing for a subset of clients to be opted out of constrained delegation in any way, either S4U2Self or regular Kerberos authentication, by forcing all tickets for these clients to be non-forwardable. In AD this is implemented by a user attribute delegation_not_allowed (aka not-delegated), which translates to disallow-forwardable. However the Samba AD DC does not do that for S4U2Self and does set the forwardable flag even if the impersonated client has the not-delegated flag set.
受影響套件(5)
- Alpine/heimdalfrom 0, < 7.7.1-r0
- Alpine/sambafrom 0, < 4.10.11-r0
- Debian/heimdalfrom 0, < 7.7.0+dfsg-1
- Debian/heimdalfrom 0, < 7.5.0+dfsg-3+deb10u1
- Debian/sambafrom 0, < 2:4.11.3+dfsg-1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |