PT-2019-2718 · Microsoft · Active Directory Federation Services+1

Published 2019-07-09 · Updated 2020-08-24 · CVE-2019-1126

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions Active Directory Federation Services (ADFS) (affected versions not specified)

Description A security feature bypass issue exists, allowing an attacker to bypass the extranet lockout policy. This could enable an attacker to launch a password brute-force attack or cause account lockouts in Active Directory by running a specially crafted application. The issue is related to how ADFS handles external authentication requests.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Restriction of Excessive Authentication Attempts

Improper Privilege Management

Weakness Enumeration

CWE-307

CWE-269

Related Identifiers

BDU:2019-02654

CVE-2019-1126

Affected Products

Active Directory Federation Services

Windows

References · 7

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1126 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-1126 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-1126 · Security Note
• https://bdu.fstec.ru/vul/2019-02654 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-1126 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2019-1126 · Vendor Advisory
• https://vuldb.com/?id.137582 · Note