CVE-2019-14769 Cross-site scripting in n/a

Medium 6.1 Published Updated

An attacker with block creation permissions can inject scripts into block labels, leading to code execution when administrators view layouts.

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-2019-14769?

CVE-2019-14769 is a medium-severity cross-site scripting vulnerability in n/a, published on 8 Aug 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

Backdrop CMS 1.12.x before 1.12.8 and 1.13.x before 1.13.3 doesn't sufficiently filter output when displaying certain block labels created by administrators. An attacker could potentially craft a specialized label, then have an administrator execute scripting when administering a layout. (This issue is mitigated by the attacker needing permission to create custom blocks on the site, which is typically an administrative permission.)

Weakness: CWE-79

Which versions are affected by CVE-2019-14769?

It affects 1 product.

Products include Backdropcms Backdrop.

How do I fix CVE-2019-14769?

No fix has been published for CVE-2019-14769 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2019-14769 being exploited?

There is no known exploitation of CVE-2019-14769 in the wild and no public exploit code.

Sources

Also known as GHSA-48qf-j39f-v99r.

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