[ GLSA 202208-07 ] LibRaw: Stack buffer overread

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Gentoo Linux Security Advisory                           GLSA 202208-07
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                                           https://security.gentoo.org/
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 Severity: Low
    Title: LibRaw: Stack buffer overread
     Date: August 10, 2022
     Bugs: #793956
       ID: 202208-07

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Synopsis
========

A buffer overread in LibRaw might allow an attacker to cause denial of
service.

Background
==========

LibRaw is a library for reading RAW files obtained from digital photo
cameras.

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  media-libs/libraw          < 0.20.2                    >= 0.20.2

Description
===========

LibRaw incorrectly handles parsing DNG fields in some cases, potentially
resulting in a buffer overread leading to denial of service.

Impact
======

An attacker capable of providing crafted input to LibRaw could trigger denial of service.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All LibRaw users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=media-libs/libraw-0.20.2"

References
==========

[ 1 ] CVE-2020-24870
      https://nvd.nist.gov/vuln/detail/CVE-2020-24870

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202208-07

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
[email protected] or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2022 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/2.5

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