CVE-2021-29464: Heap buffer overflow in Exiv2::Jp2Image::encodeJp2Header
First published: Fri Apr 30 2021(Updated: )
Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. A heap buffer overflow was found in Exiv2 versions v0.27.3 and earlier. The heap overflow is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially exploit the vulnerability to gain code execution, 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 Software | Affected Version | How to fix |
|---|---|---|
| redhat/exiv2 | <0.27.4 | 0.27.4 |
| CentOS Dos2unix | <0.27.4 | |
| Fedora | =33 | |
| Fedora | =34 |
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.
Reference Links
- https://github.com/Exiv2/exiv2/commit/f9308839198aca5e68a65194f151a1de92398f54
- https://github.com/Exiv2/exiv2/security/advisories/GHSA-jgm9-5fw5-pw9p
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/K3HKXR6JOVKMBE4HY4FDXNVZGNCQG6T3/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDMZTVQAZSMLPTDVDYLBHAAF7I5QXVYQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NDMZTVQAZSMLPTDVDYLBHAAF7I5QXVYQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K3HKXR6JOVKMBE4HY4FDXNVZGNCQG6T3/
- https://security.gentoo.org/glsa/202312-06
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1982188
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1982189
- https://access.redhat.com/errata/RHSA-2021:4173
- https://access.redhat.com/security/cve/cve-2021-29464
- https://bugzilla.redhat.com/show_bug.cgi?id=1978105
Frequently Asked Questions
What is the severity of CVE-2021-29464?
CVE-2021-29464 has a high severity rating due to the potential for remote code execution resulting from a heap buffer overflow in Exiv2.
How do I fix CVE-2021-29464?
To remediate CVE-2021-29464, upgrade Exiv2 to version 0.27.4 or later.
Which versions of Exiv2 are affected by CVE-2021-29464?
Versions of Exiv2 up to and including 0.27.3 are affected by CVE-2021-29464.
Can CVE-2021-29464 be exploited remotely?
Yes, CVE-2021-29464 can be exploited remotely if an attacker provides a specially crafted image file.
What type of vulnerability is CVE-2021-29464?
CVE-2021-29464 is classified as a heap buffer overflow vulnerability.
- agent/type
- agent/event
- agent/first-publish-date
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2021-29464
- agent/software-canonical-lookup
- agent/title
- agent/severity
- agent/weakness
- agent/remedy
- agent/references
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/source
- agent/author
- agent/softwarecombine
- agent/tags
- collector/nvd-api
- agent/software-canonical-lookup-request
- collector/nvd-index
- package-manager/redhat
- vendor/exiv2
- canonical/centos dos2unix
- vendor/fedoraproject
- canonical/fedora
- version/fedora/33
- version/fedora/34