CVE-2023-27533 Command injection in https://github.com/curl/curl
Attackers can execute arbitrary code via malicious TELNET input in curl due to insufficient input validation during server negotiation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-27533?
CVE-2023-27533 is a critical command injection vulnerability in Fedoraproject Fedora, published on 30 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in input validation exists in curl <8.0 during communication using the TELNET protocol may allow an attacker to pass on maliciously crafted user name and "telnet options" during server negotiation. The lack of proper input scrubbing allows an attacker to send content or perform option negotiation without the application's intent. This vulnerability could be exploited if an application allows user input, thereby enabling attackers to execute arbitrary code on the system.
Which versions are affected by CVE-2023-27533?
It affects 9 products.
Products include Fedoraproject Fedora, Haxx Curl, Netapp Active Iq Unified Manager, Netapp Clustered Data Ontap, Netapp H300s Firmware, Netapp H410s Firmware and 3 more.
How do I fix CVE-2023-27533?
Upgrade to a fixed version.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2023-27533 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-27533 exists.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as ALPINE-CVE-2023-27533, AZL-25783, AZL-25804, AZL-25812, AZL-25894, AZL-34608 and 10 more.