CVE-2023-42765 Westermo Lynx Cross-site Scripting

What is CVE-2023-42765?

CVE-2023-42765 is a medium-severity cross-site scripting vulnerability in Westermo Lynx, published on 6 Feb 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An attacker with access to the vulnerable software could introduce arbitrary JavaScript by injecting a cross-site scripting payload into the "username" parameter in the SNMP configuration.

Weakness: CWE-79

Which versions are affected by CVE-2023-42765?

It affects 1 product.

Products include Westermo L206-F2g Firmware.

How do I fix CVE-2023-42765?

No fix has been published for CVE-2023-42765 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-2023-42765 being exploited?

There is no known exploitation of CVE-2023-42765 in the wild and no public exploit code.

Other vulnerabilities in Westermo Lynx

• CVE-2023-38579 Westermo Lynx 206-F2G Cross-Site Request Forgery High 8.0
• CVE-2023-45735 Westermo Lynx Code Injection High 8.0
• CVE-2023-45213 Westermo Lynx Permissive Cross-domain Policy with Untrusted Domains Medium 6.6
• CVE-2023-40544 Westermo Lynx Cleartext Transmission of Sensitive Information Medium 5.7
• CVE-2023-40143 Westermo Lynx Medium 5.4

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-3mxj-h7pr-364q.