S4UTomato

S4UTomato 通过 Kerberos 将服务账户提升至 LocalSystem。 传统土豆 熟悉“土豆”系列权限提升的朋友应该知道，它可以将服务账户权限提升至本地系统权限。早期的“土豆”利用技术几乎相同：利用 COM 接口的某些特性，欺骗 NT AUTHORITY\SYSTEM 账户连接并认证到攻击者控制的 RPC 服务器。然后，通过一系列 API 调用，在此认证过程中执行中间人（NTLM 中继）攻击，从而在本地系统上生成 NT AUTHORITY\SYSTEM 账户的访问令牌。最后，窃取该令牌，并使用 CreateProcessWithToken 或...

bifrost

Bifrost \ /' | | | , | '| || , '/'\ /',| | | | || | | | , | | /' /'/ root@kitploit: Usage: ./bifrost -action dump | list | askhash | describe | asktgt | asktgs | s4u | ptt | remove For dump action: -source tickets | keytab for keytab, optional -path to specify a keytab for tickets, optional -name...

rbcd-attack

滥用 Kerberos 基于资源的约束性委派 TL;DR 本仓库介绍针对 Windows Active Directory 域中 Kerberos 基于资源的约束性委派的实际攻击方法。 与其他常见实现的不同之处在于，我们是从 Windows 域外部 发起攻击，而非从已加入域的（通常是 Windows）计算机。 该攻击仅使用 Python3Impacket（及其依赖）实现。已在 Arch 系统上使用最新版 Impacket（编写时版本为 0.9.21）测试通过。 攻击概述 简而言之，不涉及深层细节，该攻击针对域计算机，确切地说是针对目标域计算机的服务主体。 我们需要以下前提条件：...

Astra Linux – Vulnerability in freeipa

A vulnerability was discovered in FreeIPA regarding the initial implementation of MS-SFU by MIT Kerberos. This implementation lacked a condition for granting the “forwardable” flag on S4U2Self tickets. Fixing this issue required adding a special case for the checkallowedtodelegate function: If th...

EUVD-2019-5985

Malware in sbrugna...

CVE-2020-17049

It was found that the Kerberos Key Distribution Center KDC delegation feature, Service for User S4U, did not sufficiently protect the tickets it's providing from tempering. A malicious, authenticated service principal allowed to delegate could use this flaw to impersonate a non-forwardable user...

November 14, 2021—KB5008602(OS Build 17763.2305) Out-of-band

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July 13, 2021—KB5004307 (Security-only update)

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July 13, 2021—KB5004305 (Monthly Rollup)

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July 13, 2021—KB5004302 (Security-only update)

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July 13, 2021—KB5004299 (Security-only update)

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July 13, 2021—KB5004285 (Security-only update)

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November 19, 2020—KB4594441 (OS Build 14393.4048) Out-of-band

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Kerberos authentication and ticket renewal issues on Windows Server 2012 R2 - Out-of-band

Kerberos authentication and ticket renewal issues on Windows Server 2012 R2 - Out-of-band Applies to: Windows Server 2012 R2 Windows Server 2012 R2 Server Core installation NEW 11/17/20 For information about Windows update terminology, see the article about the types of Windows updates and the...

Fedora 32 : 2:samba / krb5 (2020-939681213a)

KRB5 : - Cross-realm s4u fixes for samba 1836630 - Drop unnecessary conflict with openssl-libs = 3.0.0 - Unify kvno option documentation - Use systemctl reload to HUP the KDC during logrotate SAMBA : - Support S4U operations for Samba AD DC 1836630 - Fix lookup of users and groups when realm used...

EulerOS Virtualization 3.0.6.0 : samba (EulerOS-SA-2020-1746)

According to the versions of the samba packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - 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 Kerbero...

EulerOS 2.0 SP8 : samba (EulerOS-SA-2020-1032)

According to the versions of the samba packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A flaw was found in samba's Heimdal KDC implementation, versions 4.8.x up to, excluding 4.8.12, 4.9.x up to, excluding 4.9.8 and 4.10.x up to,...

Samba 4.x < 4.9.17 / 4.10.x < 4.10.11 / 4.11.x < 4.11.3 Multiple Vulnerabilities

The version of Samba running on the remote host is 4.x prior to 4.9.17, 4.10.x prior to 4.10.11, or 4.11.x prior to 4.11.3. It is, therefore, affected by multiple vulnerabilities: - A denial of service DoS vulnerability exists in the ldbqsort and dnsnamecompare routines due to how the routines...

Authentication flaw

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...

Microsoft Windows - DeviceApi CMApi User Hive Impersonation Privilege Escalation (MS16-124)

/ Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=875 Windows: DeviceApi CMApi User Hive Impersonation EoP Platform: Windows 10 10586 not tested 8.1 Update 2 or Windows 7 Class: Elevation of Privilege Summary: The DeviceApi CMApi PnpCtxRegOpenCurrentUserKey function doesn’t chec...