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.
The product reads data past the end, or before the beginning, of the intended buffer.
| Link | Tags |
|---|---|
| https://www.debian.org/security/2019/dsa-4398 | third party advisory vendor advisory |
| https://usn.ubuntu.com/3902-1/ | third party advisory vendor advisory |
| https://bugs.php.net/bug.php?id=77369 | issue tracking exploit vendor advisory |
| https://security.netapp.com/advisory/ntap-20190321-0001/ | third party advisory |
| https://lists.debian.org/debian-lts-announce/2019/03/msg00043.html | third party advisory mailing list |
| https://usn.ubuntu.com/3922-2/ | third party advisory vendor advisory |
| https://usn.ubuntu.com/3922-3/ | third party advisory vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00041.html | vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00044.html | vendor advisory |
| https://access.redhat.com/errata/RHSA-2019:2519 | vendor advisory |
| https://access.redhat.com/errata/RHSA-2019:3299 | vendor advisory |
| https://www.tenable.com/security/tns-2019-07 |