CVE-2021-29473

Description


Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. An out-of-bounds read 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 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. Please see our security policy for information about Exiv2 security.

Related CPE's


CvssV3 impact


BaseSeverity

LOW

ConfidentialityImpact

NONE

AttackComplexity

HIGH

Scope

UNCHANGED

AttackVector

LOCAL

AvailabilityImpact

LOW

IntegrityImpact

NONE

PrivilegesRequired

NONE

BaseScore

2.5

VectorString

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

Version

3.1

UserInteraction

REQUIRED

CvssV2 impact


AccessComplexity

HIGH

ConfidentialityImpact

NONE

AvailabilityImpact

PARTIAL

IntegrityImpact

NONE

BaseScore

2.6

VectorString

AV:N/AC:H/Au:N/C:N/I:N/A:P

Version

2.0

AccessVector

NETWORK

Authentication

NONE