QID 150353

Date Published: 2021-09-16

QID 150353: Same Site Scripting

Most of the DNS servers include records of the form localhost. IN A 127.0.0.1 But if by mistake, the administrator misses the trailing dot, the record is not fully qualified. So if the domain is example.com, the queries for localhost.example.com would resolve to 127.0.0.1. Reference: https://seclists.org/bugtraq/2008/Jan/270

The websites in affected domain cannot be securely accessed on multi-user system. The attacker can trick another user on the same system to access websites on affected domain in such a manner as to result in cross site scripting leaking cookies.

CVSS V3 rated as Critical - 8.6 severity.

CVSS V2 rated as Medium - 5.9 severity.

Solution

Non fully qualified localhost entries should not be present in the nameserver for domains that host websites with HTTP state management (cookies).

Vendor References

CVEs related to QID 150353

Software Advisories

Advisory ID	Software	Component	Link

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