CVE-2018-7584

CRITICAL severity · CVSS 9.8 · Memory corruption

9.8CVSS CRITICAL

Summary

In PHP through 5.6.33, 7.0.x before 7.0.28, 7.1.x through 7.1.14, and 7.2.x through 7.2.2, there is a stack-based buffer under-read while parsing an HTTP response in the php_stream_url_wrap_http_ex function in ext/standard/http_fopen_wrapper.c. This subsequently results in copying a large string.

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactHigh

Integrity impactHigh

Availability impactHigh

Exploit probability (EPSS)83%

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

Affected products we track (1)

PHP

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: https://github.com/php/php-src/commit/523f230c831d7b33353203fa34aee4e92ac12bba ↗

Additional information

NVD record
https://github.com/php/php-src/commit/523f230c831d7b33353203fa34aee4e92ac12bbaPatch
http://php.net/ChangeLog-7.php
http://www.securityfocus.com/bid/103204Advisory
http://www.securitytracker.com/id/1041607Advisory
https://access.redhat.com/errata/RHSA-2019:2519
https://bugs.php.net/bug.php?id=75981
https://lists.debian.org/debian-lts-announce/2018/03/msg00030.htmlAdvisory
https://lists.debian.org/debian-lts-announce/2018/06/msg00005.htmlAdvisory