Vulnerability identifier: #VU14559

Vulnerability risk: Low

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L/E:U/RL:U/RC:C]

CVE-ID: N/A

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Fiserv web platform
Web applications / Other software

Vendor: Fiserv

Description
The vulnerability allows a remote attacker to conduct brute-force attack on the target system.

The vulnerability exists due to use of a specific “event number" in the operation alerts. A remote attacker can conduct brute-force attack, gain access to the victims' data and potentially modify or delete important information, as phone numbers and email addresses.

Mitigation
Cybersecurity Help is currently unaware of any solutions addressing the vulnerability.

Vulnerable software versions

Fiserv web platform: All versions

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External links
http://krebsonsecurity.com/2018/08/fiserv-flaw-exposed-customer-data-at-hundreds-of-banks/#more-447...

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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.