CVE-2021-29623 LOW

CVE-2021-29623: Uninitialized variable bug in Exiv2

Vendor Exiv2
Product exiv2
Weakness CWE-908
Published May 13, 2021
Last update August 3, 2024

CVSS base score

3.6/10
Attack vector Local
Attack complexity High
Privileges required None
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

What the vulnerability does

01Description

Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. A read of uninitialized memory was found in Exiv2 versions v0.27.3 and earlier. Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. The read of uninitialized memory is triggered when Exiv2 is used to read the metadata of a crafted image file. An attacker could potentially exploit the vulnerability to leak a few bytes of stack memory, if they can trick the victim into running Exiv2 on a crafted image file. The bug is fixed in version v0.27.4.

Key dates

02Disclosure timeline

May 13, 2021 CVE published
August 3, 2024 Record updated

Related vulnerabilities

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