CVE-2019-18894 Command injection in n/a
Attackers can execute arbitrary OS commands via a crafted request to the local web server, allowing sandbox escape from browser extensions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2019-18894?
CVE-2019-18894 is a high-severity command injection vulnerability in n/a, published on 13 Jan 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
In Avast Premium Security 19.8.2393, attackers can send a specially crafted request to the local web server run by Avast Antivirus on port 27275 to support Bank Mode functionality. A flaw in the processing of a command allows execution of arbitrary OS commands with the privileges of the currently logged in user. This allows for example attackers who compromised a browser extension to escape from the browser sandbox.
Weakness: CWE-78
Which versions are affected by CVE-2019-18894?
It affects 1 product.
Products include Avast Premium Security.
How do I fix CVE-2019-18894?
No fix has been published for CVE-2019-18894 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2019-18894 being exploited?
There is no known exploitation of CVE-2019-18894 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2023-42125 Avast Premium Security Sandbox Protection Link Following Privilege Escalation Vulnerability
- CVE-2022-28964 Path traversal in n/a
- CVE-2022-28965 Other in n/a
- CVE-2021-27241 Path traversal in Premium Security
- CVE-2023-42124 Avast Premium Security Sandbox Protection Incorrect Authorization Privilege Escalation Vulnerability
Sources
Also known as GHSA-8g22-628c-4vg2.