When PHP EXIF extension is parsing EXIF information from an image, e.g. via exif_read_data() function, in PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0 it is possible to supply it with data what will cause it to read past the allocated buffer. This may lead to information disclosure or crash.
https://bugs.php.net/bug.php?id=78910
https://lists.debian.org/debian-lts-announce/2019/12/msg00034.html
https://security.netapp.com/advisory/ntap-20200103-0002/
https://usn.ubuntu.com/4239-1/
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00036.html
https://seclists.org/bugtraq/2020/Feb/27
https://www.debian.org/security/2020/dsa-4626
https://seclists.org/bugtraq/2020/Feb/31
https://www.debian.org/security/2020/dsa-4628
Source: MITRE
Published: 2019-12-23
Updated: 2022-08-29
Type: CWE-125
Base Score: 6.4
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:P
Impact Score: 4.9
Exploitability Score: 10
Severity: MEDIUM
Base Score: 6.5
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Impact Score: 2.5
Exploitability Score: 3.9
Severity: MEDIUM