Bug 1629973 – CVE-2018-16743 mgetty: Stack-based buffer overflow with long username in contrib/next-login/login.c

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Bug 1629973 - (CVE-2018-16743) CVE-2018-16743 mgetty: Stack-based buffer overflow with long username in contrib/next-login/login.c

Summary:	CVE-2018-16743 mgetty: Stack-based buffer overflow with long username in cont...

Status:	CLOSED NOTABUG

Aliases:	CVE-2018-16743

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
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URL:
Whiteboard:	impact=low,public=20180913,reported=2...
Keywords:	Security

Depends On:	1629974
Blocks:	1629987
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Reported:	2018-09-17 13:34 EDT by Pedro Sampaio
Modified:	2018-10-10 09:48 EDT (History)
CC List:	7 users (show)

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Last Closed:	2018-10-10 09:48:53 EDT
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Description Pedro Sampaio 2018-09-17 13:34:11 EDT

An issue was discovered in mgetty before 1.2.1. In contrib/next-login/login.c, the command-line parameter username is passed unsanitized to strcpy(), which can cause a stack-based buffer overflow.

References:

https://www.x41-dsec.de/lab/advisories/x41-2018-007-mgetty

Comment 1 Pedro Sampaio 2018-09-17 13:34:39 EDT

Created mgetty tracking bugs for this issue:

Affects: fedora-all [bug 1629974]

Comment 2 Riccardo Schirone 2018-09-19 09:18:42 EDT

Statement:

This issue did not affect the versions of mgetty as shipped with Red Hat Enterprise Linux 5, 6 and 7 as they did not include the patched login binary provided by mgetty.

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