Bug 1472776 – CVE-2017-11423 libmspack, clamav: Stack-based buffer over-read in cabd_read_string function

Bugzilla will be upgraded to version 5.0 on a still to be determined date in the near future. The original upgrade date has been delayed.

Bug 1472776 - (CVE-2017-11423) CVE-2017-11423 libmspack, clamav: Stack-based buffer over-read in cabd_read_string function

Summary:	CVE-2017-11423 libmspack, clamav: Stack-based buffer over-read in cabd_read_s...

Status:	CLOSED ERRATA

Aliases:	CVE-2017-11423

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20170718,repor...
Keywords:	Security

Depends On:	1472777 1472778 1483999 1484000
Blocks:
	Show dependency tree / graph

Reported:	2017-07-19 07:45 EDT by Adam Mariš
Modified:	2018-09-26 01:45 EDT (History)
CC List:	12 users (show)

See Also:
Fixed In Version:
Doc Type:	If docs needed, set a value
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2018-09-26 01:45:22 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Adam Mariš 2017-07-19 07:45:58 EDT

The cabd_read_string function in mspack/cabd.c in libmspack 0.5alpha,
as used in ClamAV 0.99.2 and other products, allows remote attackers to
cause a denial of service (stack-based buffer over-read and application
crash) via a crafted CAB file.

Reference:

https://github.com/hackerlib/hackerlib-vul/tree/master/clamav-vul

Upstream bug:

https://bugzilla.clamav.net/show_bug.cgi?id=11873

Comment 1 Adam Mariš 2017-07-19 07:46:28 EDT

Created clamav tracking bugs for this issue:

Affects: epel-all [bug 1472777]
Affects: fedora-all [bug 1472778]

Comment 2 Sergio Monteiro Basto 2017-07-19 07:50:12 EDT

Adam Mariš , can I sergio@serjux.com have permission to look  at 
https://bugzilla.clamav.net/show_bug.cgi?id=11873 ? 

Thanks

Comment 3 Adam Mariš 2017-08-22 07:18:05 EDT

(In reply to Sergio Monteiro Basto from comment #2)
> Adam Mariš , can I sergio@serjux.com have permission to look  at 
> https://bugzilla.clamav.net/show_bug.cgi?id=11873 ? 
> 
> Thanks

Sorry, I can't help you with that. Neither do I have access there.

Comment 4 Adam Mariš 2017-08-22 08:46:01 EDT

Created libmspack tracking bugs for this issue:

Affects: fedora-all [bug 1483999]

Comment 5 Adam Mariš 2017-08-22 08:48:03 EDT

Created libmspack tracking bugs for this issue:

Affects: epel-all [bug 1484000]

Comment 6 Tuomo Soini 2017-09-20 13:21:25 EDT

Adam, rhel7 tracking bug is still missing?

Comment 7 Sergio Monteiro Basto 2018-01-10 23:03:23 EST

clamav source , clean and not clean does not contain any cabd_read_string function neither libclamav/libmspack.c only libclamav/mspack.c [2], i.e those function only available on version 0.99.3 [3] 
anyway maybe also applicable to libmspack itself [1] 


[1]
https://apps.fedoraproject.org/packages/libmspack

[2]
https://github.com/vrtadmin/clamav-devel/blob/0.99.2/libclamav/mspack.c

[3]
https://github.com/vrtadmin/clamav-devel/tree/0.99.3/libclamav

Note You need to log in before you can comment on or make changes to this bug.