Insecure cryptographic storage in Defender

Published: 2019-09-04

Risk	Medium
Patch available	NO
Number of vulnerabilities	1
CVE-ID	N/A
CWE-ID	CWE-310
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Defender Client/Desktop applications / Antivirus software/Personal firewalls
Vendor	One Identity

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Insecure cryptographic storage

EUVDB-ID: #VU20850

Risk: Medium

CVSSv3.1: 6 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:U/RC:C]

CVE-ID: N/A

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

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

The vulnerability exists due to the software stores token seeds, PAP secrets, and user passwords in Active Directory attributes. Defender passwords are hashed using MD5 in conjunction with a static key for obfuscation, which allows a remote authenticated user to read the computed hash from the defender-user TokenData attribute in Active Directory and then use it in an offline brute force attack.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Defender: 5.9.3

External links

http://seclists.org/fulldisclosure/2019/Sep/4

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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