Bug 1912960 (CVE-2019-25013)

Summary:	CVE-2019-25013 glibc: buffer over-read in iconv when processing invalid multi-byte input sequences in the EUC-KR encoding
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:	aoliva, arjun.is, ashankar, bdettelb, cmoore, codonell, cperry, csvoboda, dchong, dj, dramseur, fcanogab, fweimer, glibc-bugzilla, gmccullo, jhunter, jminter, kaycoth, kmitts, kmullins, kwalsh, law, mbenatto, mfabian, mgala, mjudeiki, mnewsome, pfrankli, rth, sadams, scorneli, sipoyare, tomckay
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	glibc 2.33	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in glibc. When processing input in the EUC-KR encoding, an invalid input sequence could cause glibc to read beyond the end of a buffer, resulting in a segmentation fault. The highest threat from this vulnerability is to system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-02-02 14:42:18 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:	1912543, 1912544, 1913056, 1913542, 1914218, 1914219, 1914220, 1914221, 1914222, 1914325, 1914326, 1914327, 1914328, 1914329, 1968669, 1968670, 1968671
Bug Blocks:	1912962, 1954955

Description Guilherme de Almeida Suckevicz 2021-01-05 17:04:35 UTC

The iconv feature in the GNU C Library (aka glibc or libc6) through 2.32, when processing invalid multi-byte input sequences in the EUC-KR encoding, may have a buffer over-read.

Reference:
https://sourceware.org/bugzilla/show_bug.cgi?id=24973

Upstream patch:
https://sourceware.org/git/?p=glibc.git;a=commit;h=ee7a3144c9922808181009b7b3e50e852fb4999b

Comment 1 Guilherme de Almeida Suckevicz 2021-01-05 20:46:46 UTC

Created glibc tracking bugs for this issue:

Affects: fedora-all [bug 1913056]

Comment 19 errata-xmlrpc 2021-02-02 12:08:14 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2021:0348 https://access.redhat.com/errata/RHSA-2021:0348

Comment 20 Product Security DevOps Team 2021-02-02 14:42:18 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-2019-25013

Comment 24 Huzaifa S. Sidhpurwala 2021-02-23 10:04:15 UTC

Statement:

This flaw has been rated as having moderate impact for glibc packages shipped with Red Hat Enterprise Linux because, the maximum impact of this vulnerability is a crash, and it relies on processing untrusted input in an uncommon encoding (EUC-KR).  When this encoding is not used, the vulnerability can not be triggered.

Comment 25 errata-xmlrpc 2021-05-18 13:26:26 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:1585 https://access.redhat.com/errata/RHSA-2021:1585