Bug 1553531 – CVE-2018-1071 zsh: Stack-based buffer overflow in exec.c:hashcmd()

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Bug 1553531 - (CVE-2018-1071) CVE-2018-1071 zsh: Stack-based buffer overflow in exec.c:hashcmd()

Summary:	CVE-2018-1071 zsh: Stack-based buffer overflow in exec.c:hashcmd()

Status:	NEW

Aliases:	CVE-2018-1071

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:
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URL:
Whiteboard:	impact=low,public=20180309,reported=2...
Keywords:	Security

Depends On:	1555019 1553533 1555016 1555017 1555018
Blocks:	1553534
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Reported:	2018-03-08 21:18 EST by Sam Fowler
Modified:	2018-10-30 03:30 EDT (History)
CC List:	8 users (show)

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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2018:3073	None	None	None	2018-10-30 03:30 EDT

Groups: None (edit)

Description Sam Fowler 2018-03-08 21:18:55 EST

zsh through version 5.4.2 is vulnerable to a stack-based buffer overflow in the exec.c:hashcmd() function. A local attacker could exploit this to cause a denial of service.

Comment 1 Sam Fowler 2018-03-08 21:19:07 EST

Acknowledgments:

Name: Richard Maciel Costa (Red Hat)

Comment 2 Sam Fowler 2018-03-08 21:19:31 EST

Created zsh tracking bugs for this issue:

Affects: fedora-all [bug 1553533]

Comment 3 Kamil Dudka 2018-03-12 09:27:06 EDT

Do we have a reproducer and/or fix for this bug?

"a stack-based buffer overflow in the exec.c:hashcmd() function" is too vague and I was not able to find any publicly available information about CVE-2018-1071).

Comment 4 Sam Fowler 2018-03-12 19:20:29 EDT

(In reply to Kamil Dudka from comment #3)
> Do we have a reproducer and/or fix for this bug?
> 
> "a stack-based buffer overflow in the exec.c:hashcmd() function" is too
> vague and I was not able to find any publicly available information about
> CVE-2018-1071).

Setting needinfo for the original reporter, Richard Costa.

Comment 14 errata-xmlrpc 2018-10-30 03:30:18 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:3073 https://access.redhat.com/errata/RHSA-2018:3073

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