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Gentoo Linux Security Advisory                           GLSA 200509-21
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                                            https://security.gentoo.org/
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  Severity: Normal
     Title: Hylafax: Insecure temporary file creation in xferfaxstats
            script
      Date: September 30, 2005
      Bugs: #106882
        ID: 200509-21

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Synopsis
=======
Hylafax is vulnerable to linking attacks, potentially allowing a local
user to overwrite arbitrary files.

Background
=========
Hylafax is a client-server fax package for class 1 and 2 fax modems.

Affected packages
================
    -------------------------------------------------------------------
     Package           /  Vulnerable  /                     Unaffected
    -------------------------------------------------------------------
  1  net-misc/hylafax       < 4.2.2                       *>= 4.2.0-r3
                                                          *>= 4.2.1-r2
                                                              >= 4.2.2

Description
==========
Javier Fernandez-Sanguino has discovered that xferfaxstats cron script
supplied by Hylafax insecurely creates temporary files with predictable
filenames.

Impact
=====
A local attacker could create symbolic links in the temporary file
directory, pointing to a valid file somewhere on the filesystem. When
the xferfaxstats script of Hylafax is executed, this would result in
the file being overwritten with the rights of the user running the
script, which typically is the root user.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All Hylafax users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose net-misc/hylafax

References
=========
  [ 1 ] Original bug report
        
Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  https://security.gentoo.org/glsa/200509-21

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 2005 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.

https://creativecommons.org/licenses/by-sa/2.0/

Gentoo: GLSA-200509-21: Hylafax: Insecure temporary file creation in xferfaxstats script

Hylafax is vulnerable to linking attacks, potentially allowing a local user to overwrite arbitrary files.

Summary

Gentoo Linux Security Advisory GLSA 200509-21 https://security.gentoo.org/ Severity: Normal Title: Hylafax: Insecure temporary file creation in xferfaxstats script Date: September 30, 2005 Bugs: #106882 ID: 200509-21

Synopsis ======= Hylafax is vulnerable to linking attacks, potentially allowing a local user to overwrite arbitrary files.
Background ========= Hylafax is a client-server fax package for class 1 and 2 fax modems.
Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-misc/hylafax < 4.2.2 *>= 4.2.0-r3 *>= 4.2.1-r2 >= 4.2.2
========== Javier Fernandez-Sanguino has discovered that xferfaxstats cron script supplied by Hylafax insecurely creates temporary files with predictable filenames.
Impact ===== A local attacker could create symbolic links in the temporary file directory, pointing to a valid file somewhere on the filesystem. When the xferfaxstats script of Hylafax is executed, this would result in the file being overwritten with the rights of the user running the script, which typically is the root user.
Workaround ========= There is no known workaround at this time.
Resolution ========= All Hylafax users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose net-misc/hylafax
References ========= [ 1 ] Original bug report
Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/200509-21
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 2005 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.
https://creativecommons.org/licenses/by-sa/2.0/

Resolution

References

Availability

Concerns

Severity

Synopsis

Background

Affected Packages

Impact

Workaround

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