CVE-2023-20218 Cross-site scripting in Cisco Small Business IP Phones
Authenticated attackers can inject scripts into the web management interface of Cisco SPA500 ATAs, enabling page redirection and client-side attacks.
- 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-2023-20218?
CVE-2023-20218 is a medium-severity cross-site scripting vulnerability in Cisco Small Business IP Phones, published on 3 Aug 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in web-based management interface of Cisco SPA500 Series Analog Telephone Adapters (ATAs) could allow an authenticated, remote attacker to to modify a web page in the context of a user's browser. This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected software. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacker to alter the contents of a web page to redirect the user to potentially malicious websites, or the attacker could use this vulnerability to conduct further client-side attacks. Cisco will not release software updates that address this vulnerability. {{value}} ["%7b%7bvalue%7d%7d"])}]]
Which versions are affected by CVE-2023-20218?
It affects 12 products.
Products include Cisco Spa500ds Firmware, Cisco Spa500s Firmware, Cisco Spa501g Firmware, Cisco Spa502g Firmware, Cisco Spa504g Firmware, Cisco Spa508g Firmware and 6 more.
How do I fix CVE-2023-20218?
No fix has been published for CVE-2023-20218 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2023-20218 being exploited?
There is no known exploitation of CVE-2023-20218 in the wild and no public exploit code.
Other vulnerabilities in Cisco Small Business IP Phones
Sources
Also known as GHSA-8397-p27v-5qrr.