CVE-2018-5730

krb5: DN container check bypass by supplying special crafted data

Severity Score

3.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

MIT krb5 1.6 or later allows an authenticated kadmin with permission to add principals to an LDAP Kerberos database to circumvent a DN containership check by supplying both a "linkdn" and "containerdn" database argument, or by supplying a DN string which is a left extension of a container DN string but is not hierarchically within the container DN.

MIT krb5, en versiones 1.6 o posteriores, permite que un kadmin autenticado con permiso para añadir entidades de seguridad a una base de datos LDAP Kerberos sortee una comprobación de containership DN proporcionando argumentos "linkdn" y "containerdn" de la base de datos, o proporcionando una cadena DN, que es una extensión a la izquierda de una cadena DN de contenedor pero que, jerárquicamente, no está dentro del contenedor DN.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-01-16 CVE Reserved
2018-03-06 CVE Published
2024-05-24 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-90: Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')

CAPEC

References (11)

URL	Tag	Source
http://www.securitytracker.com/id/1042071	Broken Link
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891869	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/01/msg00020.html	Mailing List
https://lists.debian.org/debian-lts-announce/2021/09/msg00019.html	Mailing List

URL	Date	SRC

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=1551082	2018-10-30
https://github.com/krb5/krb5/commit/e1caf6fb74981da62039846931ebdffed71309d1	2024-05-23

URL	Date	SRC
https://access.redhat.com/errata/RHBA-2019:0327	2024-05-23
https://access.redhat.com/errata/RHSA-2018:3071	2024-05-23
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GK5T6JPMBHBPKS7HNGHYUUF4KKRMNSNU	2024-05-23
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OIFUL3CPM4S5TOXTTOCQ3CUZN6XCXUTR	2024-05-23
https://access.redhat.com/security/cve/CVE-2018-5730	2018-10-30

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				>= 5-1.6 < 5-1.21.2 Search vendor "Mit" for product "Kerberos 5" and version " >= 5-1.6 < 5-1.21.2"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				26 Search vendor "Fedoraproject" for product "Fedora" and version "26"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				27 Search vendor "Fedoraproject" for product "Fedora" and version "27"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop"				7.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server"				7.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation"				7.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "7.0"		-		Affected