drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Unsichere Verwendung temporärer Dateien in Perl
Name: |
Unsichere Verwendung temporärer Dateien in Perl |
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ID: |
201709-12 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Mo, 18. September 2017, 09:09 |
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Referenzen: |
https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-6512 |
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Applikationen: |
Perl |
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Originalnachricht |
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201709-12 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: Perl: Race condition vulnerability Date: September 17, 2017 Bugs: #620304 ID: 201709-12
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Synopsis ========
A vulnerability in module File::Path for Perl allows local attackers to set arbitrary mode values on arbitrary files bypassing security restrictions.
Background ==========
File::Path module provides a convenient way to create directories of arbitrary depth and to delete an entire directory subtree from the filesystem.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-lang/perl < 5.24.1-r2 >= 5.24.1-r2 2 perl-core/File-Path < 2.130.0 >= 2.130.0 3 virtual/perl-File-Path < 2.130.0 >= 2.130.0 ------------------------------------------------------------------- 3 affected packages
Description ===========
A race condition occurs within concurrent environments. This condition was discovered by The cPanel Security Team in the rmtree and remove_tree functions in the File-Path module before 2.13 for Perl. This is due to the time-of-check-to-time-of-use (TOCTOU) race condition between the stat() that decides the inode is a directory and the chmod() that tries to make it user-rwx.
Impact ======
A local attacker could exploit this condition to set arbitrary mode values on arbitrary files and hence bypass security restrictions.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All Perl users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=dev-lang/perl-5.24.1-r2"
All File-Path users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=perl-core/File-Path-2.130.0"
All Perl-File-Path users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=virtual/perl-File-Path-2.130.0"
References ==========
[ 1 ] CVE-2017-6512 https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-6512
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/201709-12
Concerns? =========
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License =======
Copyright 2017 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5 --nextPart1636377.Gc9bMSXqAc Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part. Content-Transfer-Encoding: 7Bit
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