CVE-2021-20653 Missing authorization in Calsos CSDJ
Remote attackers can bypass access restrictions to obtain unauthorized historical data from Calsos CSDJ devices without privileges.
- 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-2021-20653?
CVE-2021-20653 is a medium-severity missing authorization vulnerability in NEC Platforms, Ltd. Calsos CSDJ, published on 17 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Calsos CSDJ (CSDJ-B 01.08.00 and earlier, CSDJ-H 01.08.00 and earlier, CSDJ-D 01.08.00 and earlier, and CSDJ-A 03.08.00 and earlier) allows remote attackers to bypass access restriction and to obtain unauthorized historical data without access privileges via unspecified vectors.
Weakness: CWE-276
Which versions are affected by CVE-2021-20653?
It affects 4 products.
Products include Nec Csdj-a Firmware, Nec Csdj-B Firmware, Nec Csdj-D Firmware, Nec Csdj-H Firmware.
How do I fix CVE-2021-20653?
No fix has been published for CVE-2021-20653 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-2021-20653 being exploited?
There is no known exploitation of CVE-2021-20653 in the wild and no public exploit code.
Sources
Also known as GHSA-2h56-v244-fqpv.