MEDIUM
When processing certain files, PHP EXIF extension in versions 7.1.x below 7.1.28, 7.2.x below 7.2.17 and 7.3.x below 7.3.4 can be caused to read past allocated buffer in exif_iif_add_value function. This may lead to information disclosure or crash.
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00010.html
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00012.html
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00041.html
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00044.html
https://access.redhat.com/errata/RHSA-2019:2519
https://access.redhat.com/errata/RHSA-2019:3299
https://bugs.php.net/bug.php?id=77831
https://lists.debian.org/debian-lts-announce/2019/05/msg00035.html
https://seclists.org/bugtraq/2019/Sep/38
https://security.netapp.com/advisory/ntap-20190502-0001/
https://support.f5.com/csp/article/K44590877
https://usn.ubuntu.com/3953-1/
Source: MITRE
Published: 2019-04-18
Updated: 2020-10-02
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: 9.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Impact Score: 5.2
Exploitability Score: 3.9
Severity: CRITICAL