CVE-2020-36284 Weak cryptography in n/a
Attackers can bypass payment verification in Union Pay Android apps by exploiting a null secret key in MAC generation, allowing free purchases.
- 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-2020-36284?
CVE-2020-36284 is a high-severity vulnerability in n/a, published on 6 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Union Pay up to 3.4.93.4.9, for android, contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability, allows attackers to shop for free in merchants' websites and mobile apps, via a crafted authentication code (MAC) which is generated based on a secret key which is NULL.
Weakness: CWE-347
Which versions are affected by CVE-2020-36284?
It affects 1 product.
Products include Unionpayintl Union Pay.
How do I fix CVE-2020-36284?
No fix has been published for CVE-2020-36284 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-36284 being exploited?
There is no known exploitation of CVE-2020-36284 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-vx7r-7h24-rm89.