An out-of-bounds read was found in Exiv2 versions v0.28.5 and earlier.
Exiv2 is a command-line utility and C++ library for reading, writing,
deleting, and modifying the metadata of image files. 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 delete.