CVE-2019-9022 Information

Description

An issue was discovered in PHP 7.x before 7.1.26 7.2.x before 7.2.14 and 7.3.x before 7.3.2. dns_get_record misparses a DNS response which can allow a hostile DNS server to cause PHP to misuse memcpy leading to read operations going past the buffer allocated for DNS data. This affects php_parserr in ext/standard/dns.c for DNS_CAA and DNS_ANY queries.

CVSS Vector

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

Reference

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=77369 https://lists.debian.org/debian-lts-announce/2019/03/msg00043.html https://security.netapp.com/advisory/ntap-20190321-0001/ https://usn.ubuntu.com/3902-1/ https://usn.ubuntu.com/3922-2/ https://usn.ubuntu.com/3922-3/ https://www.debian.org/security/2019/dsa-4398 https://www.tenable.com/security/tns-2019-07

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

7.5