Description
An issue was discovered in PHP 7.0.x before 7.0.27, 7.1.x before 7.1.13, and 7.2.x before 7.2.1. Inappropriately parsing an HTTP response leads to a segmentation fault because http_header_value in ext/standard/http_fopen_wrapper.c can be a NULL value that is mishandled in an atoi call.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 3 | rh-php71-php +27 | 7.1.30-1.el7 | RHSA-2019:2519 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.7 | php7 | 7.1.29-r0 | — |
Advisories 1
- RHSA-2019:2519 Red Hat Security Advisory: rh-php71-php security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026