CVE-2019-25018 Missing authorization in n/a
Malicious servers can bypass access restrictions to modify target directory permissions on clients using the unsupported rcp client.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-25018?
CVE-2019-25018 is a high-severity missing authorization vulnerability in n/a, published on 2 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In the rcp client in MIT krb5-appl through 1.0.3, malicious servers could bypass intended access restrictions via the filename of . or an empty filename, similar to CVE-2018-20685 and CVE-2019-7282. The impact is modifying the permissions of the target directory on the client side. NOTE: MIT krb5-appl is not supported upstream but is shipped by a few Linux distributions. The affected code was removed from the supported MIT Kerberos 5 (aka krb5) product many years ago, at version 1.8.
Which versions are affected by CVE-2019-25018?
It affects 1 product.
Products include Mit Krb5-Appl.
How do I fix CVE-2019-25018?
Product is end of life, replace it.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2019-25018 being exploited?
There is no known exploitation of CVE-2019-25018 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-xxwg-wfjg-vgjp.