CVE Catalog

CVE-2005-4827

High
Published: Translated: NVD NIST

Summary

Internet Explorer 6.0 (and possibly other versions) allows remote attackers to bypass the same origin security policy and make requests outside of the intended domain by calling open on an XMLHttpRequest object (Microsoft.XMLHTTP) and using tab, newline, and carriage return characters within the first argument (method name). Some proxy servers convert tabs to spaces, enabling the attack.

Risk Assessment

The organization is exposed to referer spoofing, HTTP Request Smuggling, and other attacks that may compromise data confidentiality, integrity, and lead to unauthorized access to resources.

Recommendation

It is recommended to update Internet Explorer to the latest available version and apply security patches from Microsoft. Additionally, configure proxy servers to not convert tab characters to spaces in request headers.

Related vulnerabilities

Original NVD description (English source)

Internet Explorer 6.0, and possibly other versions, allows remote attackers to bypass the same origin security policy and make requests outside of the intended domain by calling open on an XMLHttpRequest object (Microsoft.XMLHTTP) and using tab, newline, and carriage return characters within the first argument (method name), which is supported by some proxy servers that convert tabs to spaces. NOTE: this issue can be leveraged to conduct referer spoofing, HTTP Request Smuggling, and other attacks.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS