CVE-2018-20783

MEDIUM

Description

In PHP before 5.6.39, 7.x before 7.0.33, 7.1.x before 7.1.25, and 7.2.x before 7.2.13, a buffer over-read in PHAR reading functions may allow an attacker to read allocated or unallocated memory past the actual data when trying to parse a .phar file. This is related to phar_parse_pharfile in ext/phar/phar.c.

References

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00083.html

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00104.html

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00041.html

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00044.html

http://php.net/ChangeLog-5.php

http://php.net/ChangeLog-7.php

https://access.redhat.com/errata/RHSA-2019:2519

https://bugs.php.net/bug.php?id=77143

https://usn.ubuntu.com/3566-2/

Details

Source: MITRE

Published: 2019-02-21

Updated: 2019-05-22

Type: CWE-125

Risk Information

CVSS v2.0

Base Score: 5

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

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH