CVE-2019-5274 Denial of service in USG9500
An attacker can cause a denial of service on Huawei USG9500 firewalls by sending a malicious certificate that triggers an infinite loop in the X.509 implementation.
- 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-2019-5274?
CVE-2019-5274 is a high-severity denial of service vulnerability in Huawei Usg9500 Firmware, published on 26 Dec 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
USG9500 with versions of V500R001C30;V500R001C60 have a denial of service vulnerability. Due to a flaw in the X.509 implementation in the affected products which can result in an infinite loop, an attacker may exploit the vulnerability via a malicious certificate to perform a denial of service attack on the affected products.
Weakness: CWE-835
Which versions are affected by CVE-2019-5274?
It affects 1 product.
Products include Huawei Usg9500 Firmware.
How do I fix CVE-2019-5274?
No fix has been published for CVE-2019-5274 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-5274 being exploited?
There is no known exploitation of CVE-2019-5274 in the wild and no public exploit code.
Other vulnerabilities in Huawei Usg9500 Firmware
Sources
Also known as GHSA-7f82-9q7c-v7p8.