Bug 1808532 (CVE-2020-7062)

Summary:	CVE-2020-7062 php: NULL pointer dereference in PHP session upload progress
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	fedora, hhorak, jlyle, jorton, kyoshida, rcollet, tcrider, webstack-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-09-08 13:18:58 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:	1808533, 1810225, 1810226, 1810227, 1810228, 1810229, 1857711
Bug Blocks:	1808539

Description Guilherme de Almeida Suckevicz 2020-02-28 18:19:40 UTC

In PHP versions 7.2.x below 7.2.28, 7.3.x below 7.3.15 and 7.4.x below 7.4.3, when using file upload functionality, if upload progress tracking is enabled, but session.upload_progress.cleanup is set to 0 (disabled), and the file upload fails, the upload procedure would try to clean up data that does not exist and encounter null pointer dereference, which would likely lead to a crash.

Reference:
https://bugs.php.net/bug.php?id=79221

Comment 1 Guilherme de Almeida Suckevicz 2020-02-28 18:20:00 UTC

Created php tracking bugs for this issue:

Affects: fedora-all [bug 1808533]

Comment 2 Marco Benatto 2020-03-04 18:23:57 UTC

Upstream commit for this issue:
http://git.php.net/?p=php-src.git;a=commit;h=d76f7c6c636b8240e06a1fa29eebb98ad005008a

Comment 4 errata-xmlrpc 2020-09-08 09:47:13 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:3662 https://access.redhat.com/errata/RHSA-2020:3662

Comment 5 Product Security DevOps Team 2020-09-08 13:18:58 UTC

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-2020-7062

Comment 8 errata-xmlrpc 2020-12-01 12:03:12 UTC

This issue has been addressed in the following products:

  Red Hat Software Collections for Red Hat Enterprise Linux 7
  Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS

Via RHSA-2020:5275 https://access.redhat.com/errata/RHSA-2020:5275