Bug 1418771 – CVE-2017-5630 php-pear: File overwrite by malicious server

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Bug 1418771 - (CVE-2017-5630) CVE-2017-5630 php-pear: File overwrite by malicious server

Summary:	CVE-2017-5630 php-pear: File overwrite by malicious server

Status:	CLOSED WONTFIX

Aliases:	CVE-2017-5630

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
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URL:
Whiteboard:	impact=moderate,public=20170126,repor...
Keywords:	Security

Depends On:	1418773
Blocks:	1418772
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Reported:	2017-02-02 11:54 EST by Andrej Nemec
Modified:	2017-04-06 09:47 EDT (History)
CC List:	6 users (show)

See Also:
Fixed In Version:
Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in php-pear where if a malicious server responded to a pear
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Environment:
Last Closed:	2017-04-06 03:08:47 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Andrej Nemec 2017-02-02 11:54:02 EST

PECL in the download utility class in the Installer in PEAR Base System
v1.10.1 does not validate file types and filenames after a redirect,
which allows remote HTTP servers to overwrite files via crafted
responses, as demonstrated by a .htaccess overwrite.

Upstream bug:

http://pear.php.net/bugs/bug.php?id=21171

Comment 1 Andrej Nemec 2017-02-02 11:56:06 EST

Created php-pear tracking bugs for this issue:

Affects: fedora-all [bug 1418773]

Comment 3 Doran Moppert 2017-04-06 03:07:07 EDT

Mitigation:

This vulnerability only allows files in the current directory to be overwritten, so using `pear download` in a temporary directory effectively mitigates the risk of a dangerous file overwrite occurring.

Comment 4 Doran Moppert 2017-04-06 03:07:16 EDT

Statement:

Since pear's purpose is to download libraries for inclusion in an application, any use of `pear install` or `pear download` implicitly trusts the server. This vulnerability does not significantly extend the trust already given to pear and to servers used with it.

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