CVE-2019-1912 Cisco Small Business 220 Series Smart Switches Authentication Bypass Vulnerability
Unauthenticated remote attackers can upload arbitrary files to Cisco Small Business 220 Series Smart Switches, enabling configuration modification or reverse shell injection.
- 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-2019-1912?
CVE-2019-1912 is a critical missing authorization vulnerability in Cisco Small Business 220 Series Smart Plus Switches, published on 7 Aug 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the web management interface of Cisco Small Business 220 Series Smart Switches could allow an unauthenticated, remote attacker to upload arbitrary files. The vulnerability is due to incomplete authorization checks in the web management interface. An attacker could exploit this vulnerability by sending a malicious request to certain parts of the web management interface. Depending on the configuration of the affected switch, the malicious request must be sent via HTTP or HTTPS. A successful exploit could allow the attacker to modify the configuration of an affected device or to inject a reverse shell. This vulnerability affects Cisco Small Business 220 Series Smart Switches running firmware versions prior to 1.1.4.4 with the web management interface enabled. The web management interface is enabled via both HTTP and HTTPS by default.
Which versions are affected by CVE-2019-1912?
It affects 11 products.
Products include Cisco Sf-220-24 Firmware, Cisco Sf220-24p Firmware, Cisco Sf220-48 Firmware, Cisco Sf220-48p Firmware, Cisco Sg220-26 Firmware, Cisco Sg220-26p Firmware and 5 more.
How do I fix CVE-2019-1912?
No fix has been published for CVE-2019-1912 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-2019-1912 being exploited?
There is no known exploitation of CVE-2019-1912 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Cisco Small Business 220 Series Smart Plus Switches
Sources
Also known as GHSA-q6mv-m62h-7q28.