CVE-2019-9021 Information

Description

An issue was discovered in PHP before 5.6.40 7.x before 7.1.26 7.2.x before 7.2.14 and 7.3.x before 7.3.1. A heap-based buffer over-read in PHAR reading functions in the PHAR extension may allow an attacker to read allocated or unallocated memory past the actual data when trying to parse the file name a different vulnerability than CVE-2018-20783. This is related to phar_detect_phar_fname_ext in ext/phar/phar.c.

CVSS Vector

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

Reference

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://www.securityfocus.com/bid/106747 http://www.securityfocus.com/bid/107156 https://access.redhat.com/errata/RHSA-2019:2519 https://access.redhat.com/errata/RHSA-2019:3299 https://bugs.php.net/bug.php?id=77247 https://security.netapp.com/advisory/ntap-20190321-0001/ https://usn.ubuntu.com/3902-1/ https://usn.ubuntu.com/3902-2/ https://www.debian.org/security/2019/dsa-4398

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8