Bug 1483909 (CVE-2017-6419)

Summary: CVE-2017-6419 libmspack, clamav: heap-based buffer overflow in mspack/lzxd.c
Product: [Other] Security Response Reporter: Adam Mariš <amaris>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dan, gbcox, janfrode, j, ondrejj, orion, redhat-bugzilla, rhbugs, rjones, sardella, sergio, steve
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Last Closed: 2018-09-26 05:46:36 UTC Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1483911, 1483912, 1483999, 1484000    
Bug Blocks:    

Description Adam Mariš 2017-08-22 09:09:07 UTC 
mspack/lzxd.c in libmspack 0.5alpha, as used in ClamAV 0.99.2, allows
remote attackers to cause a denial of service (heap-based buffer
overflow and application crash) or possibly have unspecified other
impact via a crafted CHM file.

Upstream patch:

https://github.com/vrtadmin/clamav-devel/commit/a83773682e856ad6529ba6db8d1792e6d515d7f1
Comment 1 Adam Mariš 2017-08-22 09:10:29 UTC 
Created clamav tracking bugs for this issue:

Affects: epel-all [bug 1483912]
Affects: fedora-all [bug 1483911]
Comment 2 Adam Mariš 2017-08-22 12:46:12 UTC 
Created libmspack tracking bugs for this issue:

Affects: fedora-all [bug 1483999]
Comment 3 Adam Mariš 2017-08-22 12:48:14 UTC 
Created libmspack tracking bugs for this issue:

Affects: epel-all [bug 1484000]
Comment 4 Sergio Basto 2018-01-11 04:08:39 UTC 
Same as bug 1472776#c7 libclamav/libmspack.c only exist in clamav  0.99.3 [1], in 0.99.2 we only have libclamav/mspack.c [2]. 


[1]
https://github.com/vrtadmin/clamav-devel/tree/0.99.3/libclamav

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