Bug 1877402 (CVE-2020-14392)

Summary:	CVE-2020-14392 perl-dbi: Memory corruption in XS functions when Perl stack is reallocated
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	caillon+fedoraproject, hhorak, john.j5live, jorton, jplesnik, kasal, perl-devel, perl-maint-list, ppisar, rhughes, rstrode, vondruch
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	perl-DBI 1.643	Doc Type:	If docs needed, set a value
Doc Text:	An untrusted pointer dereference flaw was found in Perl-DBI before version 1.643. This flaw allows a local attacker who can manipulate calls to dbd_db_login6_sv() to cause memory corruption. The highest threat from this vulnerability is to system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-11-02 17:24:39 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:	1877403, 1877496, 1877497, 1877498, 1877499
Bug Blocks:	1857388

Description Pedro Sampaio 2020-09-09 14:47:19 UTC

A flaw was found in perl-dbi before version 1.643. Macro ST(*) returns pointer to Perl stack. Other Perl functions which use Perl stack (e.g. eval) may reallocate Perl stack and therefore pointer returned by ST(*) macro is invalid which may lead to memory corruption.

Upstream patch:

https://github.com/perl5-dbi/dbi/commit/ea99b6aafb437db53c28fd40d5eafbe119cd66e1

Comment 1 Pedro Sampaio 2020-09-09 14:48:05 UTC

Created perl-DBI tracking bugs for this issue:

Affects: fedora-all [bug 1877403]

Comment 2 Petr Pisar 2020-09-09 15:28:37 UTC

The fix is included in DBI-1.643 upstream release.

Comment 5 Todd Cullum 2020-09-10 21:23:17 UTC

External References:

Advisory: https://metacpan.org/pod/distribution/DBI/Changes#Changes-in-DBI-1.643-...