Bug 1588760 – CVE-2018-12015 perl: Directory traversal in Archive::Tar

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Bug 1588760 - (CVE-2018-12015) CVE-2018-12015 perl: Directory traversal in Archive::Tar

Summary:	CVE-2018-12015 perl: Directory traversal in Archive::Tar

Status:	NEW

Aliases:	CVE-2018-12015

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

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

URL:
Whiteboard:	impact=moderate,public=20180607,repor...
Keywords:	Security

Depends On:	1592803 1592804 1592805 1588761 1591205 1592806
Blocks:	1588762
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Reported:	2018-06-07 15:51 EDT by Pedro Sampaio
Modified:	2018-09-19 08:38 EDT (History)
CC List:	17 users (show)

See Also:
Fixed In Version:	perl-Archive-Tar 2.28
Doc Type:	If docs needed, set a value
Doc Text:	It was found that the Archive::Tar module did not properly sanitize symbolic links when extracting tar archives. An attacker, able to provide a specially crafted archive for processing, could use this flaw to write or overwrite arbitrary files in the context of the Perl interpreter.
Story Points:	---
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Last Closed:
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Regression:	---
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oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
CPAN	125523	None	None	None	2018-06-08 02:00 EDT

Groups: None (edit)

Description Pedro Sampaio 2018-06-07 15:51:57 EDT

In Perl through 5.26.2, the Archive::Tar module allows remote attackers to bypass a directory-traversal protection mechanism, and overwrite arbitrary files, via an archive file containing a symlink and a regular file with the same name.

References:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=900834

Comment 1 Pedro Sampaio 2018-06-07 15:52:54 EDT

Created perl tracking bugs for this issue:

Affects: fedora-all [bug 1588761]

Comment 2 Petr Pisar 2018-06-12 04:22:12 EDT

Please note that all Fedoras, RHSCLs and RHEL ≥ 7 do not provide Archive::Tar module by perl source package, but by perl-Archive-Tar source package.

Comment 3 Cedric Buissart 2018-06-14 04:06:57 EDT

(In reply to Petr Pisar from comment #2)
> Please note that all Fedoras, RHSCLs and RHEL ≥ 7 do not provide
> Archive::Tar module by perl source package, but by perl-Archive-Tar source
> package.
Corrected. However, it seems that RHEL-5 also provides perl-Archive-Tar as source (i.e.: only RHEL-6 has Archive::Tar merged into perl source)

Comment 4 Petr Pisar 2018-06-14 04:59:21 EDT

(In reply to Cedric Buissart from comment #3)
> However, it seems that RHEL-5 also provides perl-Archive-Tar as
> source (i.e.: only RHEL-6 has Archive::Tar merged into perl source)

You are right. RHEL-5 also has a standalone perl-Archive-Tar. perl-5.8.8 never distributed Archive::Tar because upstream started to bundle it with perl sources since 5.9.3.

Comment 5 Cedric Buissart 2018-06-14 05:33:10 EDT

Created perl-Archive-Tar tracking bugs for this issue:

Affects: fedora-all [bug 1591205]

Comment 8 Fedora Update System 2018-06-18 11:15:53 EDT

perl-Archive-Tar-2.28-1.fc27 has been pushed to the Fedora 27 stable repository. If problems still persist, please make note of it in this bug report.

Comment 9 Fedora Update System 2018-06-18 12:17:48 EDT

perl-Archive-Tar-2.28-1.fc28 has been pushed to the Fedora 28 stable repository. If problems still persist, please make note of it in this bug report.

Comment 11 Cedric Buissart 2018-06-29 08:05:54 EDT

Upstream fix:
https://github.com/jib/archive-tar-new/commit/ae65651eab05

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