Bug 1789069 (CVE-2019-11044)
Summary: | CVE-2019-11044 php: link function accepts filenames with embedded null byte and treats them as terminating at that byte on Windows | ||
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Product: | [Other] Security Response | Reporter: | Guilherme de Almeida Suckevicz <gsuckevi> |
Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
Status: | CLOSED NOTABUG | QA Contact: | |
Severity: | low | Docs Contact: | |
Priority: | low | ||
Version: | unspecified | CC: | fedora, hhorak, jorton, rcollet, webstack-team |
Target Milestone: | --- | Keywords: | Security |
Target Release: | --- | ||
Hardware: | All | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | php 7.3.14RC1 | Doc Type: | If docs needed, set a value |
Doc Text: |
A flaw was discovered in the link function in PHP. When compiled on Windows, it does not correctly handle paths containing NULL bytes. An attacker could abuse this flaw to bypass application checks on file paths.
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Story Points: | --- |
Clone Of: | Environment: | ||
Last Closed: | 2020-01-15 14:09:26 UTC | Type: | --- |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: | |||
Bug Depends On: | |||
Bug Blocks: | 1789070 |
Description
Guilherme de Almeida Suckevicz
2020-01-08 16:46:30 UTC
This flaw is present in the file ext/standard/link_win32.c, which is compiled only on Windows builds. Similar code is present in ext/standard/link.c and there was a similar flaw there in the past, named CVE-2006-7243. This was however fixed in the versions of php we ship. Statement: This issue did not affect the versions of php as shipped with Red Hat Enterprise Linux 5, 6, 7, and 8 as the flaw only affects Windows builds. See CVE-2006-7243 for the Linux version of this flaw. This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2019-11044 |