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9.8
CRITICAL CVSS 3.0
CVE-2016-4540
Apache PHP Grapheme String Buffer Overflow Denial of Service
Description

The grapheme_stripos function in ext/intl/grapheme/grapheme_string.c in PHP before 5.5.35, 5.6.x before 5.6.21, and 7.x before 7.0.6 allows remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via a negative offset.

INFO

Published Date :

May 22, 2016, 1:59 a.m.

Last Modified :

April 12, 2025, 10:46 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2016-4540 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Fedoraproject fedora
1 Opensuse leap
1 Php php
: Total Affected Vendor : 3 | Products : 3
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 HIGH [email protected]
CVSS 3.0 CRITICAL [email protected]
Solution
This addresses a PHP vulnerability by updating the affected packages or applying a security patch.
  • Upgrade PHP to version 5.5.35, 5.6.21, or 7.0.6 or later.
  • Update the affected PHP packages.
  • Apply the relevant vendor patch.
Public PoC/Exploit Available at Github

CVE-2016-4540 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2016-4540.

URL Resource
http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183736.html
http://lists.opensuse.org/opensuse-updates/2016-05/msg00086.html
http://lists.opensuse.org/opensuse-updates/2016-06/msg00027.html
http://php.net/ChangeLog-5.php Patch
http://php.net/ChangeLog-7.php Patch
http://rhn.redhat.com/errata/RHSA-2016-2750.html
http://www.debian.org/security/2016/dsa-3602
http://www.openwall.com/lists/oss-security/2016/05/05/21
http://www.securityfocus.com/bid/90172
https://bugs.php.net/bug.php?id=72061 Exploit
https://git.php.net/?p=php-src.git%3Ba=commit%3Bh=fd9689745c44341b1bd6af4756f324be8abba2fb
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722
https://security.gentoo.org/glsa/201611-22
http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183736.html
http://lists.opensuse.org/opensuse-updates/2016-05/msg00086.html
http://lists.opensuse.org/opensuse-updates/2016-06/msg00027.html
http://php.net/ChangeLog-5.php Patch
http://php.net/ChangeLog-7.php Patch
http://rhn.redhat.com/errata/RHSA-2016-2750.html
http://www.debian.org/security/2016/dsa-3602
http://www.openwall.com/lists/oss-security/2016/05/05/21
http://www.securityfocus.com/bid/90172
https://bugs.php.net/bug.php?id=72061 Exploit
https://git.php.net/?p=php-src.git%3Ba=commit%3Bh=fd9689745c44341b1bd6af4756f324be8abba2fb
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722
https://security.gentoo.org/glsa/201611-22
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2016-4540 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2016-4540 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
bralbral/ipinfo.sh

Get informations about an IP address

Python HTML Dockerfile

Updated: 3 years, 1 month ago
0 stars 0 fork 0 watcher
Born at : June 30, 2022, 8:37 p.m. This repo has been linked 6 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2016-4540 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2016-4540 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183736.html
    Added Reference http://lists.opensuse.org/opensuse-updates/2016-05/msg00086.html
    Added Reference http://lists.opensuse.org/opensuse-updates/2016-06/msg00027.html
    Added Reference http://php.net/ChangeLog-5.php
    Added Reference http://php.net/ChangeLog-7.php
    Added Reference http://rhn.redhat.com/errata/RHSA-2016-2750.html
    Added Reference http://www.debian.org/security/2016/dsa-3602
    Added Reference http://www.openwall.com/lists/oss-security/2016/05/05/21
    Added Reference http://www.securityfocus.com/bid/90172
    Added Reference https://bugs.php.net/bug.php?id=72061
    Added Reference https://git.php.net/?p=php-src.git%3Ba=commit%3Bh=fd9689745c44341b1bd6af4756f324be8abba2fb
    Added Reference https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
    Added Reference https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149
    Added Reference https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722
    Added Reference https://security.gentoo.org/glsa/201611-22
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Debian GNU/Linux https://git.php.net/?p=php-src.git%3Ba=commit%3Bh=fd9689745c44341b1bd6af4756f324be8abba2fb [No types assigned]
    Removed Reference Debian GNU/Linux https://git.php.net/?p=php-src.git;a=commit;h=fd9689745c44341b1bd6af4756f324be8abba2fb
  • CPE Deprecation Remap by [email protected]

    Oct. 30, 2018

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:novell:leap:42.1:*:*:*:*:*:*:* OR *cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jan. 05, 2018

    Action Type Old Value New Value
    Added Reference http://rhn.redhat.com/errata/RHSA-2016-2750.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 01, 2017

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/201611-22 [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 17, 2017

    Action Type Old Value New Value
    Added Reference https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722 [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 01, 2016

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-updates/2016-05/msg00086.html [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 28, 2016

    Action Type Old Value New Value
    Added Reference http://www.debian.org/security/2016/dsa-3602 [No Types Assigned]
    Added Reference http://www.securityfocus.com/bid/90172 [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 29, 2016

    Action Type Old Value New Value
    Added Reference https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149
  • CVE Modified by [email protected]

    Aug. 24, 2016

    Action Type Old Value New Value
    Added Reference https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
  • Modified Analysis by [email protected]

    Jun. 15, 2016

    Action Type Old Value New Value
    Changed CPE Configuration Configuration 1 OR *cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:* Configuration 2 OR *cpe:2.3:a:php:php:7.0.5:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.4:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.3:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.2:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.1:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.0:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.20:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.19:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.18:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.17:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.16:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.15:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.14:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.13:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.12:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.11:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.10:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.9:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.8:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.7:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.6:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.5:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.4:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.34:*:*:*:*:*:*:* (and previous) Configuration 1 OR *cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:* Configuration 2 OR *cpe:2.3:o:novell:leap:42.1:*:*:*:*:*:*:* Configuration 3 OR *cpe:2.3:a:php:php:7.0.5:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.4:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.3:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.2:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.1:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.0:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.20:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.19:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.18:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.17:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.16:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.15:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.14:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.13:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.12:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.11:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.10:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.9:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.8:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.7:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.6:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.5:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.4:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.34:*:*:*:*:*:*:* (and previous)
  • CVE Modified by [email protected]

    Jun. 15, 2016

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-updates/2016-06/msg00027.html
  • Modified Analysis by [email protected]

    Jun. 03, 2016

    Action Type Old Value New Value
    Changed CPE Configuration Configuration 1 OR *cpe:2.3:a:php:php:7.0.5:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.4:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.3:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.2:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.1:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.0:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.20:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.19:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.18:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.17:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.16:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.15:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.14:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.13:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.12:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.11:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.10:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.9:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.8:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.7:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.6:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.5:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.4:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.34:*:*:*:*:*:*:* (and previous) Configuration 1 OR *cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:* Configuration 2 OR *cpe:2.3:a:php:php:7.0.5:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.4:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.3:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.2:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.1:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.0:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.20:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.19:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.18:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.17:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.16:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.15:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.14:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.13:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.12:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.11:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.10:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.9:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.8:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.7:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.6:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.5:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.4:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.34:*:*:*:*:*:*:* (and previous)
    Changed Reference Type http://php.net/ChangeLog-7.php No Types Assigned http://php.net/ChangeLog-7.php Patch
    Changed Reference Type http://php.net/ChangeLog-5.php No Types Assigned http://php.net/ChangeLog-5.php Patch
  • CVE Modified by [email protected]

    Jun. 03, 2016

    Action Type Old Value New Value
    Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183736.html
  • Modified Analysis by [email protected]

    May. 25, 2016

    Action Type Old Value New Value
    Added Evaluator Description <a href="http://cwe.mitre.org/data/definitions/125.html">CWE-125: Out-of-bounds Read</a>
    Added CPE Configuration Configuration 1 OR *cpe:2.3:a:php:php:7.0.5:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.4:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.3:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.2:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.1:*:*:*:*:*:*:* *cpe:2.3:a:php:php:7.0.0:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.20:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.19:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.18:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.17:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.16:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.15:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.14:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.13:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.12:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.11:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.10:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.9:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.8:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.7:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.6:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.5:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.4:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.34:*:*:*:*:*:*:* (and previous)
    Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://bugs.php.net/bug.php?id=72061 No Types Assigned https://bugs.php.net/bug.php?id=72061 Exploit
    Added CWE NVD-CWE-Other
  • Initial Analysis by [email protected]

    May. 24, 2016

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 9.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 7.5
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.76 }} -0.12%

score

0.72370

percentile