CVE-2019-1877 Cisco Enterprise Chat and Email Attachment Download Vulnerability

Medium 6.5 Published 5 Nov 2019 Updated 21 Nov 2024

Unauthenticated attackers can download chat attachments due to insufficient API authentication, exposing sensitive user data.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2019-1877?

CVE-2019-1877 is a medium-severity missing authorization vulnerability in Cisco Enterprise Chat and Email, published on 5 Nov 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A vulnerability in the HTTP API of Cisco Enterprise Chat and Email could allow an unauthenticated, remote attacker to download files attached through chat sessions. The vulnerability is due to insufficient authentication mechanisms on the file download function of the API. An attacker could exploit this vulnerability by sending a crafted request to the API. A successful exploit could allow the attacker to download files that other users attach through the chat feature. This vulnerability affects versions prior to 12.0(1)ES1.

Weakness: CWE-287, CWE-200

Which versions are affected by CVE-2019-1877?

It affects 1 product.

Products include Cisco Enterprise Chat and Email.

How do I fix CVE-2019-1877?

No fix has been published for CVE-2019-1877 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2019-1877 being exploited?

There is no known exploitation of CVE-2019-1877 in the wild and no public exploit code.

Sources

Also known as GHSA-mcq8-w4cg-w5v4.