CVE-2021-31577 Missing authorization in EN7528, EN7580
A missing permission check in MediaTek Boa allows remote attackers to escalate privileges without user interaction or additional execution rights.
- 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-2021-31577?
CVE-2021-31577 is a critical missing authorization vulnerability in MediaTek, Inc. EN7528, EN7580, published on 6 Feb 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In Boa, there is a possible escalation of privilege due to a missing permission check. This could lead to remote escalation of privilege from a proximal attacker with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: A20210008; Issue ID: OSBNB00123241.
Weakness: CWE-862
Which versions are affected by CVE-2021-31577?
It affects 2 products.
Products include Mediatek En7528 Firmware, Mediatek En7580 Firmware.
How do I fix CVE-2021-31577?
No fix has been published for CVE-2021-31577 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-2021-31577 being exploited?
There is no known exploitation of CVE-2021-31577 in the wild and no public exploit code.
Other vulnerabilities in MediaTek, Inc. EN7528, EN7580
Sources
Also known as GHSA-28g5-fvw4-57w5.