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Vulnerability record · CVE-2017-16642 · published 7 November 2017

CVE-2017-16642: Php out-of-bounds read vulnerability

Php · Php

In PHP before 5.6.32, 7.x before 7.0.25, and 7.1.x before 7.1.11, an error in the date extension's timelib_meridian handling of 'front of' and 'back of' directives could be used by attackers able to supply date strings to leak information from the interpreter, related to ext/date/lib/parse_date.c out-of-bounds reads affecting the php_parse_date function. NOTE: this is a different issue than CVE-2017-11145.

7.5 CVSS 3.0 High EPSS 26% · top 2.1% CWE-125 · Out-of-bounds read
7.5CVSS 3.0 base score, v2 5.0
26%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
26References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

In PHP before 5.6.32, 7.x before 7.0.25, and 7.1.x before 7.1.11, an error in the date extension's timelib_meridian handling of 'front of' and 'back of' directives could be used by attackers able to supply date strings to leak information from the interpreter, related to ext/date/lib/parse_date.c out-of-bounds reads affecting the php_parse_date function. NOTE: this is a different issue than CVE-2017-11145.

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

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://php.net/ChangeLog-5.php Issue TrackingRelease NotesVendor Advisory
http://php.net/ChangeLog-7.php Issue TrackingRelease NotesVendor Advisory
http://www.securityfocus.com/bid/101745 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2018:1296 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2519
https://bugs.php.net/bug.php?id=75055 Issue TrackingVendor Advisory
https://github.com/derickr/timelib/commit/aa9156006e88565e1f1a5f7cc088b18322d57536 Issue TrackingPatchThird Party Advisory
https://github.com/php/php-src/commit/5c0455bf2c8cd3c25401407f158e820aa3b239e1 Issue TrackingPatchThird Party Advisory
https://security.netapp.com/advisory/ntap-20181123-0001/ Third Party Advisory
https://usn.ubuntu.com/3566-1/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4080 Third Party Advisory
https://www.debian.org/security/2018/dsa-4081 Third Party Advisory
https://www.exploit-db.com/exploits/43133/ ExploitIssue TrackingThird Party AdvisoryVDB Entry
http://php.net/ChangeLog-5.php Issue TrackingRelease NotesVendor Advisory
http://php.net/ChangeLog-7.php Issue TrackingRelease NotesVendor Advisory
http://www.securityfocus.com/bid/101745 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2018:1296 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2519
https://bugs.php.net/bug.php?id=75055 Issue TrackingVendor Advisory
https://github.com/derickr/timelib/commit/aa9156006e88565e1f1a5f7cc088b18322d57536 Issue TrackingPatchThird Party Advisory
https://github.com/php/php-src/commit/5c0455bf2c8cd3c25401407f158e820aa3b239e1 Issue TrackingPatchThird Party Advisory
https://security.netapp.com/advisory/ntap-20181123-0001/ Third Party Advisory
https://usn.ubuntu.com/3566-1/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4080 Third Party Advisory
https://www.debian.org/security/2018/dsa-4081 Third Party Advisory
https://www.exploit-db.com/exploits/43133/ ExploitIssue TrackingThird Party AdvisoryVDB Entry

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Source: NIST National Vulnerability Database (record CVE-2017-16642), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.