CVE-2021-29623 Uninitialized variable bug in Exiv2

2021-05-1300:00:00

CWE-908

GitHub_M

www.cve.org

exiv2

uninitialized memory

image metadata

CVSS3

3.6

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

5.4

Confidence

High

EPSS

0.001

Percentile

32.7%

JSON

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.

CNA Affected

[
  {
    "vendor": "Exiv2",
    "product": "exiv2",
    "versions": [
      {
        "version": "< v0.27.4",
        "status": "affected"
      }
    ]
  }
]