CVE-2018-19830 Missing authorization in n/a
Attackers can change the owner of the BAFC token contract because the UBSexToken function lacks caller identity checks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-19830?
CVE-2018-19830 is a high-severity missing authorization vulnerability in n/a, published on 31 Dec 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The UBSexToken() function of a smart contract implementation for Business Alliance Financial Circle (BAFC), an tradable Ethereum ERC20 token, allows attackers to change the owner of the contract, because the function is public (by default) and does not check the caller's identity.
Weakness: CWE-862
Which versions are affected by CVE-2018-19830?
It affects 1 product.
Products include Business Alliance Financial Circle Project Business Alliance Financial Circle.
How do I fix CVE-2018-19830?
No fix has been published for CVE-2018-19830 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-2018-19830 being exploited?
There is no known exploitation of CVE-2018-19830 in the wild and no public exploit code.
Sources
Also known as GHSA-pxr5-3mrm-cp72.