- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 202208-07
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                           https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

 Severity: Low
    Title: LibRaw: Stack buffer overread
     Date: August 10, 2022
     Bugs: #793956
       ID: 202208-07

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

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
security@gentoo.org 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/