CVE-2020-13443 File upload in n/a
Remote attackers with member access can upload and execute arbitrary PHP code by bypassing file extension and MIME type checks in the messaging feature.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-13443?
CVE-2020-13443 is a high-severity vulnerability in n/a, published on 24 Jun 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
ExpressionEngine before 5.3.2 allows remote attackers to upload and execute arbitrary code in a .php%20 file via Compose Msg, Add attachment, and Save As Draft actions. A user with low privileges (member) is able to upload this. It is possible to bypass the MIME type check and file-extension check while uploading new files. Short aliases are not used for an attachment; instead, direct access is allowed to the uploaded files. It is possible to upload PHP only if one has member access, or registration/forum is enabled and one can create a member with the default group id of 5. To exploit this, one must to be able to send and compose messages (at least).
Weakness: CWE-434
Which versions are affected by CVE-2020-13443?
It affects 1 product.
Products include Expressionengine Expressionengine.
How do I fix CVE-2020-13443?
No fix has been published for CVE-2020-13443 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-13443 being exploited?
There is no known exploitation of CVE-2020-13443 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-m6qg-wrwf-hqr2.