Bug 1537062 – CVE-2018-1000033 unzip: Heap-based out-of-bounds access in extract.c:ef_scan_for_stream() possibly causing crash

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Bug 1537062 - (CVE-2018-1000033) CVE-2018-1000033 unzip: Heap-based out-of-bounds access in extract.c:ef_scan_for_stream() possibly causing crash

Summary:	CVE-2018-1000033 unzip: Heap-based out-of-bounds access in extract.c:ef_scan_...

Status:	NEW

Aliases:	CVE-2018-1000033

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

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

URL:
Whiteboard:	impact=low,public=20180207,reported=2...
Keywords:	Security

Depends On:	1537063 1543337
Blocks:	1537057
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Reported:	2018-01-22 06:22 EST by Adam Mariš
Modified:	2018-02-15 03:39 EST (History)
CC List:	6 users (show)

See Also:
Fixed In Version:	unzip 6.1c23
Doc Type:	If docs needed, set a value
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Last Closed:
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RHEL 7.3 requirements from Atomic Host:
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Description Adam Mariš 2018-01-22 06:22:02 EST

Heap-based out-of-bounds access in extract.c:ef_scan_for_stream() function due to missing length check when accessing data was found.

Comment 3 Adam Mariš 2018-01-22 07:57:53 EST

Acknowledgments:

Name: R. Freingruber (SEC Consult Vulnerability Lab)

Comment 4 Pedro Yóssis Silva Barbosa 2018-01-25 11:00:38 EST

Statement:

This issue did not affect the versions of unzip as shipped with Red Hat Enterprise Linux 5, 6, and 7, as they did not include support for ef_scan_for_stream function.

Comment 5 Adam Mariš 2018-02-08 04:02:41 EST

External References:

https://www.sec-consult.com/en/blog/advisories/multiple-vulnerabilities-in-infozip-unzip/index.html

Comment 6 Adam Mariš 2018-02-08 04:45:13 EST

Created unzip tracking bugs for this issue:

Affects: fedora-all [bug 1543337]

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