Bug 1542261 (CVE-2018-6540) - CVE-2018-6540 zziplib: bus error in zzip_disk_findfirst function in zzip/mmapped.c
Summary: CVE-2018-6540 zziplib: bus error in zzip_disk_findfirst function in zzip/mmap...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2018-6540
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1542262 1548363
Blocks: 1542260
TreeView+ depends on / blocked
 
Reported: 2018-02-05 23:43 UTC by Laura Pardo
Modified: 2019-09-29 14:31 UTC (History)
2 users (show)

Fixed In Version: zziplib 0.13.68
Doc Type: If docs needed, set a value
Doc Text:
An unaligned memory access bug was found in the way ZZIPlib handled ZIP files. This flaw could potentially be used to crash the application using ZZIPlib by tricking the application into processing specially crafted ZIP files.
Clone Of:
Environment:
Last Closed: 2019-06-08 03:39:21 UTC

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Description Laura Pardo 2018-02-05 23:43:50 UTC 
A flaw was found in ZZIPlib 0.13.67, there is a bus error caused by loading of a misaligned address in the zzip_disk_findfirst function of zzip/mmapped.c. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted zip file.

References:
https://github.com/gdraheim/zziplib/issues/15

Patch:
https://github.com/gdraheim/zziplib/commit/72ec933663f738d8e166979aa7fd5590b2104a07
Comment 1 Laura Pardo 2018-02-05 23:44:24 UTC 
Created zziplib tracking bugs for this issue:

Affects: fedora-all [bug 1542262]
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