CVE-2021-29473

low

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.

References

https://github.com/Exiv2/exiv2/security/policy

https://github.com/Exiv2/exiv2/security/advisories/GHSA-7569-phvm-vwc2

https://github.com/github/advisory-review/pull/1587

https://lists.fedoraproject.org/archives/list/[email protected]/message/2XQT5F5IINTDYDAFGVGQZ7PMMLG7I5ZZ/

https://lists.fedoraproject.org/archives/list/[email protected]/message/JWZLDECIXXW3CCZ3RS4A3NG5X5VE4WZM/

https://lists.fedoraproject.org/archives/list/[email protected]/message/LBKWLTXM7IKZ4PVGKLUQVAVFAYGGF7QR/

https://lists.fedoraproject.org/archives/list/[email protected]/message/P2A5GMJEXQ5Q76JK6F6VKK5JYCLVFGKN/

https://www.debian.org/security/2021/dsa-4958

https://lists.debian.org/debian-lts-announce/2021/08/msg00028.html

Details

Source: MITRE

Published: 2021-04-26

Updated: 2021-09-21

Type: CWE-125

Risk Information

CVSS v2

Base Score: 2.6

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

Impact Score: 2.9

Exploitability Score: 4.9

Severity: LOW

CVSS v3

Base Score: 2.5

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

Impact Score: 1.4

Exploitability Score: 1

Severity: LOW