Bug 1953708 (CVE-2021-29470) - CVE-2021-29470 exiv2: Out-of-bounds read in Exiv2::Jp2Image::encodeJp2Header
Summary: CVE-2021-29470 exiv2: Out-of-bounds read in Exiv2::Jp2Image::encodeJp2Header
Alias: CVE-2021-29470
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1953709 1953710 1955014 1955015 1955016
Blocks: 1953711
TreeView+ depends on / blocked
Reported: 2021-04-26 17:20 UTC by Guilherme de Almeida Suckevicz
Modified: 2022-04-17 21:19 UTC (History)
4 users (show)

Fixed In Version: exiv2 0.27.4
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in exiv2. An out-of-bounds read in the Exiv2::Jp2Image::encodeJp2Header function may allow a remote attacker to crash an application using exiv2 library. The highest threat from this vulnerability is to application availability.
Clone Of:
Last Closed: 2021-11-09 22:21:04 UTC

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:4173 0 None None None 2021-11-09 17:34:18 UTC

Description Guilherme de Almeida Suckevicz 2021-04-26 17:20:32 UTC
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.


Upstream patch:

Comment 1 Guilherme de Almeida Suckevicz 2021-04-26 17:21:21 UTC
Created exiv2 tracking bugs for this issue:

Affects: fedora-all [bug 1953709]

Created mingw-exiv2 tracking bugs for this issue:

Affects: fedora-all [bug 1953710]

Comment 2 Riccardo Schirone 2021-04-29 09:07:14 UTC
Upstream patch:

Comment 3 Riccardo Schirone 2021-04-29 09:07:19 UTC
External References:


Comment 6 errata-xmlrpc 2021-11-09 17:34:17 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4173 https://access.redhat.com/errata/RHSA-2021:4173

Comment 7 Product Security DevOps Team 2021-11-09 22:21:02 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):


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