In PHP 7.x before 7.0.21 and 7.1.x before 7.1.7, ext/intl/msgformat/msgformat_parse.c does not restrict the locale length, which allows remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact within International Components for Unicode (ICU) for C/C++ via a long first argument to the msgfmt_parse_message function.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| https://bugs.php.net/bug.php?id=73473 | vendor advisory issue tracking |
| https://access.redhat.com/errata/RHSA-2018:1296 | vendor advisory |
| https://security.netapp.com/advisory/ntap-20180112-0001/ | |
| https://security.gentoo.org/glsa/201709-21 | vendor advisory |
| https://usn.ubuntu.com/3566-2/ | vendor advisory |