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CVE-2017-16642

49
FAUCET Score

CVE-2017-16642 is an out-of-bounds read vulnerability in the PHP date extension, affecting PHP versions before 5.6.32, 7.0.25, and 7.1.11, as well as products from Canonical, Debian, and NetApp. This high-severity vulnerability (CVSS 7.5) allows unauthenticated attackers to remotely leak information from the interpreter by supplying specially crafted date strings, with no user interaction required. While there is no evidence of active exploitation in the wild and minimal community discussion, a public exploit (EDB-43133) exists, demonstrating a heap buffer overflow related to this flaw.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.6.32CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
>= 7.0.0, < 7.0.25CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
>= 7.1.0, < 7.1.11CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
26.37%
Probability of exploitation in next 30 days
EPSS Percentile
97.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
ExploitDB: EDB-43133 · Nov 9, 2017
This CVE's current EPSS score of 0.2637 is in the 96th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (16)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-php70-php-0:7.0.27-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSFixed in: rh-php70-php-0:7.0.27-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-php70-php-0:7.0.27-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-php71-php-0:7.1.30-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUSFixed in: rh-php70-php-0:7.0.27-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: rh-php70-php-0:7.0.27-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: rh-php71-php-0:7.1.30-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: rh-php70-php-0:7.0.27-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: rh-php71-php-0:7.1.30-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-php71-php-0:7.1.30-1.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: php
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: php53
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: php
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: php
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-php56-php

Vendor Advisories (1)

redhatCVE-2017-16642Low

php: Out-of-bound read in timelib_meridian()

Nov 7, 2017

References

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