Information disclosure in Azure Active Directory Microsoft Account



Published: 2019-08-13
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-1172
CWE-ID CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Windows
Operating systems & Components / Operating system

Windows Server
Operating systems & Components / Operating system

Vendor Microsoft

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU20212

Risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-1172

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists in Azure Active Directory (AAD) Microsoft Account (MSA) during the login request session due to insecure cookie handling. A remote attacker can trick the victim to visit a specially crafted website and steal user's cookie.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 8.1 - 10 1903

Windows Server: 2012 R2 - 2019 1903

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1172


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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