medium
6.5
CWE
125
Advisory Published
Updated

CVE-2021-29470: Out-of-bounds read in Exiv2::Jp2Image::encodeJp2Header

First published: Fri Apr 23 2021(Updated: )

Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. An out-of-bounds read was found in Exiv2 versions v0.27.3 and earlier. The out-of-bounds read is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially exploit the vulnerability to cause a denial of service by crashing Exiv2, if they can trick the victim into running Exiv2 on a crafted image file. Note that this bug is only triggered when writing the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as insert. The bug is fixed in version v0.27.4.

Credit: security-advisories@github.com

Affected SoftwareAffected VersionHow to fix
redhat/exiv2<0.27.4
0.27.4
CentOS Dos2unix<=0.27.3
Fedora=33
Fedora=34

Remedy

https://github.com/Exiv2/exiv2/pull/1581

Remedy

https://github.com/Exiv2/exiv2/security/advisories/GHSA-8949-hhfh-j7rj

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-29470?

    CVE-2021-29470 has a moderate severity level due to the potential for information disclosure through an out-of-bounds read.

  • How do I fix CVE-2021-29470?

    To fix CVE-2021-29470, upgrade Exiv2 to version 0.27.4 or later.

  • What versions of Exiv2 are affected by CVE-2021-29470?

    Exiv2 versions 0.27.3 and earlier are affected by CVE-2021-29470.

  • What impact does CVE-2021-29470 have on an application?

    CVE-2021-29470 may allow an attacker to read sensitive metadata from image files, which can lead to information disclosure.

  • Is there a workaround for CVE-2021-29470?

    There is no specific workaround for CVE-2021-29470, and it is recommended to update to the patched version.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203