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Attacker Value
Unknown

CVE-2021-31291

Disclosure Date: July 26, 2021 (last updated November 08, 2023)
Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2021-29457. Reason: This candidate is a duplicate of CVE-2021-29457. Notes: All CVE users should reference CVE-2021-29457 instead of this candidate. All references and descriptions in this candidate have been removed to prevent accidental usage
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Attacker Value
Unknown

CVE-2021-29457

Disclosure Date: April 19, 2021 (last updated November 08, 2023)
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.