CVE-2017-15088

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

plugins/preauth/pkinit/pkinit_crypto_openssl.c in MIT Kerberos 5 (aka krb5) through 1.15.2 mishandles Distinguished Name (DN) fields, which allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow and application crash) in situations involving untrusted X.509 data, related to the get_matching_data and X509_NAME_oneline_ex functions. NOTE: this has security relevance only in use cases outside of the MIT Kerberos distribution, e.g., the use of get_matching_data in KDC certauth plugin code that is specific to Red Hat.

plugins/preauth/pkinit/pkinit_crypto_openssl.c en MIT Kerberos 5 (también conocido como krb5) hasta la versión 1.15.2 gestiona de manera incorrecta los campos Distinguished Name (DN). Esto permite que atacantes remotos ejecuten código arbitrario o provoquen una denegación de servicio (desbordamiento de búfer y cierre inesperado de la aplicación) en situaciones relacionadas con datos X.509 no fiables. Esto se relaciona con las funciones get_matching_data y X509_NAME_oneline_ex. NOTA: esto es relevante para la seguridad solo en casos externos a la distribución de MIT Kerberos, por ejemplo, el uso de get_matching_data en el código del plugin KDC certauth específico de Red Hat.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-10-08 CVE Reserved
2017-11-23 CVE Published
2023-11-03 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-121: Stack-based Buffer Overflow

CAPEC

References (5)

URL	Tag	Source
http://www.securityfocus.com/bid/101594	Third Party Advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=871698	Issue Tracking

URL	Date	SRC

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=1504045	2021-01-26
https://github.com/krb5/krb5/commit/fbb687db1088ddd894d975996e5f6a4252b9a2b4	2021-01-26
https://github.com/krb5/krb5/pull/707	2021-01-26

URL	Date	SRC

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"				<= 1.15.2 Search vendor "Mit" for product "Kerberos 5" and version " <= 1.15.2"		-		Affected