CVE-2019-5273 Memory corruption in USG9500
A heap buffer overrun in the X.509 implementation allows attackers to cause denial of service on Huawei USG9500 firewalls via malicious certificates.
- 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-2019-5273?
CVE-2019-5273 is a high-severity memory corruption 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 a large heap buffer overrun error, an attacker may exploit the vulnerability by a malicious certificate, resulting a denial of service on the affected products.
Weakness: CWE-120
Which versions are affected by CVE-2019-5273?
It affects 1 product.
Products include Huawei Usg9500 Firmware.
How do I fix CVE-2019-5273?
No fix has been published for CVE-2019-5273 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2019-5273 being exploited?
There is no known exploitation of CVE-2019-5273 in the wild and no public exploit code.
Other vulnerabilities in Huawei Usg9500 Firmware
Sources
Also known as GHSA-jc47-5xg9-mpc2.