In PHP versions 7.2.x below 7.2.9, 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while parsing EXIF data with exif_read_data() function, it is possible for malicious data to cause PHP to read one byte of uninitialized memory. This could potentially lead to information disclosure or crash.
https://bugs.php.net/bug.php?id=79282
https://security.netapp.com/advisory/ntap-20200403-0001/
https://lists.debian.org/debian-lts-announce/2020/04/msg00021.html
https://usn.ubuntu.com/4330-1/
https://usn.ubuntu.com/4330-2/
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00025.html
https://www.debian.org/security/2020/dsa-4717
https://www.debian.org/security/2020/dsa-4719
Source: MITRE
Published: 2020-04-01
Updated: 2022-08-29
Type: CWE-125
Base Score: 5.8
Vector: AV:N/AC:M/Au:N/C:P/I:N/A:P
Impact Score: 4.9
Exploitability Score: 8.6
Severity: MEDIUM
Base Score: 5.4
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
Impact Score: 2.5
Exploitability Score: 2.8
Severity: MEDIUM