high
8.5
CWE
264
Advisory Published
Updated

CVE-2014-8143

First published: Sat Jan 17 2015(Updated: )

Samba 4.0.x before 4.0.24, 4.1.x before 4.1.16, and 4.2.x before 4.2rc4, when an Active Directory Domain Controller (AD DC) is configured, allows remote authenticated users to set the LDB userAccountControl UF_SERVER_TRUST_ACCOUNT bit, and consequently gain privileges, by leveraging delegation of authority for user-account or computer-account creation.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Samba=4.0.0
Samba=4.0.1
Samba=4.0.2
Samba=4.0.3
Samba=4.0.4
Samba=4.0.5
Samba=4.0.6
Samba=4.0.7
Samba=4.0.8
Samba=4.0.9
Samba=4.0.10
Samba=4.0.11
Samba=4.0.12
Samba=4.0.13
Samba=4.0.14
Samba=4.0.15
Samba=4.0.16
Samba=4.0.17
Samba=4.0.18
Samba=4.0.19
Samba=4.0.20
Samba=4.0.21
Samba=4.0.22
Samba=4.0.23
Samba=4.1.0
Samba=4.1.1
Samba=4.1.2
Samba=4.1.3
Samba=4.1.4
Samba=4.1.5
Samba=4.1.6
Samba=4.1.7
Samba=4.1.8
Samba=4.1.9
Samba=4.1.10
Samba=4.1.11
Samba=4.1.12
Samba=4.1.13
Samba=4.1.14
Samba=4.1.15
Samba=4.2.0-rc1
Samba=4.2.0-rc2
Samba=4.2.0-rc3

Remedy

https://download.samba.org/pub/samba/patches/security/samba-4.0.23-CVE-2014-8143.patch

Remedy

https://download.samba.org/pub/samba/patches/security/samba-4.1.15-CVE-2014-8143.patch

Remedy

https://www.samba.org/samba/security/CVE-2014-8143

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2014-8143?

    CVE-2014-8143 is considered a high-severity vulnerability due to its potential to allow privilege escalation for authenticated users.

  • How do I fix CVE-2014-8143?

    To fix CVE-2014-8143, update Samba to versions 4.0.24, 4.1.16, or 4.2rc4 or later.

  • Who is impacted by CVE-2014-8143?

    CVE-2014-8143 affects Samba versions prior to 4.0.24, 4.1.16, and 4.2rc4 installed on servers acting as Active Directory Domain Controllers.

  • What kind of access does CVE-2014-8143 provide to attackers?

    CVE-2014-8143 allows remote authenticated users to gain elevated privileges by manipulating the userAccountControl attribute.

  • Is CVE-2014-8143 still a risk if Samba is updated?

    Once Samba is updated to the recommended versions, CVE-2014-8143 should no longer pose a risk.

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