CVE-2017-16642

high-risk
Published 2017-11-07

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.

Do I need to act?

~
8.3% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
!
1 public exploit available
43133
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (6)

Php

Affected Vendors

Php Netapp Canonical Debian

References (26)

Issue Tracking http://php.net/ChangeLog-5.php
Issue Tracking http://php.net/ChangeLog-7.php
Third Party Advisory http://www.securityfocus.com/bid/101745
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:1296
https://access.redhat.com/errata/RHSA-2019:2519
Issue Tracking https://bugs.php.net/bug.php?id=75055
Issue Tracking https://github.com/derickr/timelib/commit/aa9156006e88565e1f1a5f7cc088b18322d575...
Issue Tracking https://github.com/php/php-src/commit/5c0455bf2c8cd3c25401407f158e820aa3b239e1
Third 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
Exploit https://www.exploit-db.com/exploits/43133/
Issue Tracking http://php.net/ChangeLog-5.php
Issue Tracking http://php.net/ChangeLog-7.php
Third Party Advisory http://www.securityfocus.com/bid/101745
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:1296
https://access.redhat.com/errata/RHSA-2019:2519
Issue Tracking https://bugs.php.net/bug.php?id=75055
Issue Tracking https://github.com/derickr/timelib/commit/aa9156006e88565e1f1a5f7cc088b18322d575...
and 6 more references
56
/ 100
high-risk
Severity 26/34 · High
Exploitability 17/34 · Moderate
Exposure 13/34 · Low