---

Gentoo Linux Security Advisory GLSA 202210-28

---

                                       https://security.gentoo.org/  

---

Severity: Low
Title: exif: Denial of Service
Date: October 31, 2022
Bugs: #783522
ID: 202210-28

---

Synopsis

A vulnerability has been discovered in exif which could result in denial
of service.

Background

libexif is a library for parsing, editing and saving Exif metadata from
images. exif is a small command line interface for libexif.

Affected packages

-------------------------------------------------------------------  
 Package              /     Vulnerable     /            Unaffected  
-------------------------------------------------------------------  

1 media-gfx/exif < 0.6.22 >= 0.6.22

Description

There is a bug in exif’s XML output format which can result in a null
pointer dereference when outputting crafted JPEG EXIF data.

Impact

A crafted JPEG image can trigger a denial of service in the form of a
null pointer dereference.

Workaround

There is no known workaround at this time.

Resolution

All exif users should upgrade to the latest version:

emerge --sync

emerge --ask --oneshot --verbose “>=media-gfx/exif-0.6.22”

References

[ 1 ] CVE-2021-27815
https://nvd.nist.gov/vuln/detail/CVE-2021-27815

Availability

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

https://security.gentoo.org/glsa/202210-28

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