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: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED WONTFIX QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: 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   
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:
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:


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-...