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CVE-2012-4388

Status Candidate

Overview

The sapi_header_op function in main/SAPI.c in PHP 5.4.0RC2 through 5.4.0 does not properly determine a pointer during checks for %0D sequences (aka carriage return characters), which allows remote attackers to bypass an HTTP response-splitting protection mechanism via a crafted URL, related to improper interaction between the PHP header function and certain browsers, as demonstrated by Internet Explorer and Google Chrome. NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-1398.

Related Files

Ubuntu Security Notice USN-1569-1
Posted Sep 17, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1569-1 - It was discovered that PHP incorrectly handled certain character sequences when applying HTTP response-splitting protection. A remote attacker could create a specially-crafted URL and inject arbitrary headers. It was discovered that PHP incorrectly handled directories with a large number of files. This could allow a remote attacker to execute arbitrary code with the privileges of the web server, or to perform a denial of service. Various other issues were also addressed.

tags | advisory, remote, web, denial of service, arbitrary, php
systems | linux, ubuntu
advisories | CVE-2012-2688, CVE-2012-3450, CVE-2011-1398, CVE-2012-2688, CVE-2012-3450, CVE-2012-4388
SHA-256 | ca286c3dc3421c19e6fd6053965096637970d19dc1b7ac9c4b2b75b876f38310
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