Bug 1431730 (CVE-2017-6800, CVE-2017-6801, CVE-2017-6802, CVE-2017-9058, CVE-2017-9146)

Summary: CVE-2017-6800 CVE-2017-6801 CVE-2017-6802 CVE-2017-9058 CVE-2017-9146 ytnef: Multiple vulnerabilities fixed in 1.9.2 version
Product: [Other] Security Response Reporter: Andrej Nemec <anemec>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED UPSTREAM QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: andreas.bierfert, itamar, ppisar, sheltren
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: ytnef 1.9.2 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-06-08 03:08:58 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: 1422814, 1422815, 1422816, 1422817    
Bug Blocks:    
Attachments:
Description Flags
spec patch none

Description Andrej Nemec 2017-03-13 16:27:05 UTC 
CVE-2017-6802 - An issue was discovered in ytnef before 1.9.2. There is a potential
heap-based buffer over-read on incoming Compressed RTF Streams, related to DecompressRTF() in libytnef.

Upstream bug:

https://github.com/Yeraze/ytnef/issues/34

CVE-2017-6801 - An issue was discovered in ytnef before 1.9.2. There is a potential
out-of-bounds access with fields of Size 0 in TNEFParse() in libytnef.

Upstream patch:

https://github.com/Yeraze/ytnef/commit/3cb0f914d6427073f262e1b2b5fd973e3043cdf7

CVE-2017-6800 - An issue was discovered in ytnef before 1.9.2. An invalid memory access
(heap-based buffer over-read) can occur during handling of LONG data types, related to MAPIPrint() in libytnef.

Upstream bug:

https://github.com/Yeraze/ytnef/issues/28
Comment 1 Andrej Nemec 2017-03-13 16:28:33 UTC 
Created libytnef tracking bugs for this issue:

Affects: fedora-all [bug 1422817]
Affects: epel-all [bug 1422814]
Comment 2 Andrej Nemec 2017-03-13 16:28:39 UTC 
Created ytnef tracking bugs for this issue:

Affects: fedora-all [bug 1422815]
Affects: epel-all [bug 1422816]
Comment 3 Andreas Bierfert 2017-03-18 13:44:56 UTC 
The correct fix will be to merge ytnef and libytnef into one package (as done upstream with version 1.9. I have prepared a scratch build here. Itamar if you don't mind I will push this to rawhide and deprecate the separate libytnef there and then go to the releases once this got a bit more testing.

https://koji.fedoraproject.org/koji/taskinfo?taskID=18454905
Comment 4 Andreas Bierfert 2017-03-18 13:47:13 UTC 
Created attachment 1264378 [details]
spec patch
Comment 5 Andrej Nemec 2017-05-18 13:33:47 UTC 
Another CVE was reported in libytnef.

CVE-2017-9058 - In libytnef in ytnef through 1.9.2, there is a heap-based buffer over-read due to incorrect boundary checking in the SIZECHECK macro in lib/ytnef.c. 

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=862556
Comment 6 Andrej Nemec 2017-05-23 07:42:45 UTC 
Another CVE was reported in libytnef.

CVE-2017-9146 - The TNEFFillMapi function in lib/ytnef.c in libytnef in ytnef through 1.9.2 does not ensure a nonzero count value before a certain memory allocation, which 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 tnef file. 

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=862707
Comment 7 Product Security DevOps Team 2019-06-08 03:08:58 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.