Bug 1179694 (CVE-2020-29562)

Summary:	VUL-1: CVE-2020-29562: glibc: iconv fails an assertion in the code path and aborts the program when converting UCS4 text containing an irreversible character
Product:	[Novell Products] SUSE Security Incidents	Reporter:	Wolfgang Frisch <wolfgang.frisch>
Component:	Incidents	Assignee:	Andreas Schwab <schwab>
Status:	RESOLVED FIXED	QA Contact:	Security Team bot <security-team>
Severity:	Minor
Priority:	P4 - Low	CC:	smash_bz
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/272742/
See Also:	https://sourceware.org/bugzilla/show_bug.cgi?id=26923
Whiteboard:	CVSSv3.1:SUSE:CVE-2020-29562:6.5:(AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description Wolfgang Frisch 2020-12-07 13:31:31 UTC

CVE-2020-29562

The iconv function in the GNU C Library (aka glibc or libc6) 2.30 to 2.32, when
converting UCS4 text containing an irreversible character, fails an assertion in
the code path and aborts the program, potentially resulting in a denial of
service.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-29562
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29562
https://sourceware.org/bugzilla/show_bug.cgi?id=26923

Comment 1 Wolfgang Frisch 2020-12-07 15:49:32 UTC

Patch:
https://sourceware.org/pipermail/libc-alpha/attachments/20201119/8aac5005/attachment.obj

Comment 2 Wolfgang Frisch 2020-12-07 15:50:31 UTC

QA reproducer:
wget "https://sourceware.org/bugzilla/attachment.cgi?id=12978" -O test.c
gcc -o test test.c
./test

GOOD:
No output

FAIL:
test: ../iconv/skeleton.c:739: __gconv_transform_ucs4_internal: Assertion `outbuf == outerr' failed.
Aborted (core dumped)

Comment 3 Wolfgang Frisch 2020-12-07 15:54:47 UTC

SUSE:Carwos:1           Affected
SUSE:SLE-11-SP1:Update  Not affected [1]
SUSE:SLE-11-SP3:Update  Affected
SUSE:SLE-12-SP2:Update  Affected
SUSE:SLE-12-SP4:Update  Affected
SUSE:SLE-15:Update      Affected
SUSE:SLE-15-SP3:Update  Affected

[1] not reproducible

Comment 4 OBSbugzilla Bot 2020-12-16 17:10:16 UTC

This is an autogenerated message for OBS integration:
This bug (1179694) was mentioned in
https://build.opensuse.org/request/show/856526 Factory / glibc

Comment 8 Swamp Workflow Management 2021-02-26 23:18:34 UTC

SUSE-SU-2021:0653-1: An update that solves 5 vulnerabilities and has one errata is now available.

Category: security (important)
Bug References: 1178386,1179694,1179721,1180038,1181505,1182117
CVE References: CVE-2019-25013,CVE-2020-27618,CVE-2020-29562,CVE-2020-29573,CVE-2021-3326
JIRA References: 
Sources used:
SUSE Manager Server 4.0 (src):    glibc-2.26-13.56.1, glibc-utils-src-2.26-13.56.1
SUSE Manager Retail Branch Server 4.0 (src):    glibc-2.26-13.56.1, glibc-utils-src-2.26-13.56.1
SUSE Manager Proxy 4.0 (src):    glibc-2.26-13.56.1, glibc-utils-src-2.26-13.56.1
SUSE Linux Enterprise Server for SAP 15-SP1 (src):    glibc-2.26-13.56.1, glibc-utils-src-2.26-13.56.1
SUSE Linux Enterprise Server for SAP 15 (src):    glibc-2.26-13.56.1, glibc-utils-src-2.26-13.56.1
SUSE Linux Enterprise Server 15-SP1-LTSS (src):    glibc-2.26-13.56.1, glibc-utils-src-2.26-13.56.1
SUSE Linux Enterprise Server 15-SP1-BCL (src):    glibc-2.26-13.56.1, glibc-utils-src-2.26-13.56.1
SUSE Linux Enterprise Server 15-LTSS (src):    glibc-2.26-13.56.1, glibc-utils-src-2.26-13.56.1
SUSE Linux Enterprise Module for Development Tools 15-SP2 (src):    glibc-2.26-13.56.1, glibc-utils-src-2.26-13.56.1
SUSE Linux Enterprise Module for Basesystem 15-SP2 (src):    glibc-2.26-13.56.1
SUSE Linux Enterprise High Performance Computing 15-SP1-LTSS (src):    glibc-2.26-13.56.1, glibc-utils-src-2.26-13.56.1
SUSE Linux Enterprise High Performance Computing 15-SP1-ESPOS (src):    glibc-2.26-13.56.1, glibc-utils-src-2.26-13.56.1
SUSE Linux Enterprise High Performance Computing 15-LTSS (src):    glibc-2.26-13.56.1, glibc-utils-src-2.26-13.56.1
SUSE Linux Enterprise High Performance Computing 15-ESPOS (src):    glibc-2.26-13.56.1, glibc-utils-src-2.26-13.56.1
SUSE Enterprise Storage 6 (src):    glibc-2.26-13.56.1, glibc-utils-src-2.26-13.56.1
SUSE CaaS Platform 4.0 (src):    glibc-2.26-13.56.1, glibc-utils-src-2.26-13.56.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 9 Swamp Workflow Management 2021-02-28 02:16:20 UTC

openSUSE-SU-2021:0358-1: An update that solves 5 vulnerabilities and has one errata is now available.

Category: security (important)
Bug References: 1178386,1179694,1179721,1180038,1181505,1182117
CVE References: CVE-2019-25013,CVE-2020-27618,CVE-2020-29562,CVE-2020-29573,CVE-2021-3326
JIRA References: 
Sources used:
openSUSE Leap 15.2 (src):    glibc-2.26-lp152.26.6.1, glibc-testsuite-src-2.26-lp152.26.6.1, glibc-utils-src-2.26-lp152.26.6.1

Comment 11 Swamp Workflow Management 2021-04-13 16:25:34 UTC

SUSE-SU-2021:1165-1: An update that solves three vulnerabilities and has one errata is now available.

Category: security (important)
Bug References: 1178386,1179694,1179721,1184034
CVE References: CVE-2020-27618,CVE-2020-29562,CVE-2020-29573
JIRA References: 
Sources used:
SUSE OpenStack Cloud Crowbar 9 (src):    glibc-2.22-114.8.3
SUSE OpenStack Cloud 9 (src):    glibc-2.22-114.8.3
SUSE Linux Enterprise Software Development Kit 12-SP5 (src):    glibc-2.22-114.8.3
SUSE Linux Enterprise Server for SAP 12-SP4 (src):    glibc-2.22-114.8.3
SUSE Linux Enterprise Server 12-SP5 (src):    glibc-2.22-114.8.3
SUSE Linux Enterprise Server 12-SP4-LTSS (src):    glibc-2.22-114.8.3

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 14 Swamp Workflow Management 2022-08-24 16:16:59 UTC

SUSE-SU-2022:2886-1: An update that fixes 7 vulnerabilities is now available.

Category: security (important)
Bug References: 1027496,1178386,1179694,1179721,1181505,1182117,941234
CVE References: CVE-2015-5180,CVE-2016-10228,CVE-2019-25013,CVE-2020-27618,CVE-2020-29562,CVE-2020-29573,CVE-2021-3326
JIRA References: 
Sources used:
SUSE Linux Enterprise Server 12-SP3-BCL (src):    glibc-2.22-126.1
SUSE Linux Enterprise Server 12-SP2-BCL (src):    glibc-2.22-126.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 15 Marcus Meissner 2022-11-25 09:58:57 UTC

released