9.8
CRITICAL CVSS 3.0
CVE-2016-6293
ICU uloc_acceptLanguageFromHTTP-Out-of-Bounds Read Vulnerability
Description

The uloc_acceptLanguageFromHTTP function in common/uloc.cpp in International Components for Unicode (ICU) through 57.1 for C/C++ does not ensure that there is a '\0' character at the end of a certain temporary array, which allows remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via a call with a long httpAcceptLanguage argument.

INFO

Published Date :

July 25, 2016, 2:59 p.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-2016-6293 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 Icu-project international_components_for_unicode
: Total Affected Vendor : 1 | Products : 1
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
Follow the instructions below to mitigate the CVE-2016-6293 vulnerability.
Upgrade to PHP version 5.5.38 or later.
Public PoC/Exploit Available at Github

CVE-2016-6293 has a 2 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-2016-6293.

URL Resource
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=aa82e99ed8003c01f1ef4f0940e56b85c5b032d4
http://openwall.com/lists/oss-security/2016/07/24/2 Mailing List
http://www.securityfocus.com/bid/92127 Third Party Advisory VDB Entry
https://bugs.php.net/72533 Exploit Issue Tracking Third Party Advisory
https://security.gentoo.org/glsa/201701-58 Third Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=aa82e99ed8003c01f1ef4f0940e56b85c5b032d4
http://openwall.com/lists/oss-security/2016/07/24/2 Mailing List
http://www.securityfocus.com/bid/92127 Third Party Advisory VDB Entry
https://bugs.php.net/72533 Exploit Issue Tracking Third Party Advisory
https://security.gentoo.org/glsa/201701-58 Third Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2016-6293 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-2016-6293 weaknesses.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-100: Overflow Buffers Overflow Buffers CAPEC-123: Buffer Manipulation Buffer Manipulation

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).

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Updated: 2 years, 7 months ago
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Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2016-6293 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-2016-6293 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://git.php.net/?p=php-src.git%3Ba=commit%3Bh=aa82e99ed8003c01f1ef4f0940e56b85c5b032d4
    Added Reference http://openwall.com/lists/oss-security/2016/07/24/2
    Added Reference http://www.securityfocus.com/bid/92127
    Added Reference https://bugs.php.net/72533
    Added Reference https://security.gentoo.org/glsa/201701-58
    Added Reference https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
  • 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 MITRE http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=aa82e99ed8003c01f1ef4f0940e56b85c5b032d4 [No types assigned]
    Removed Reference MITRE http://git.php.net/?p=php-src.git;a=commit;h=aa82e99ed8003c01f1ef4f0940e56b85c5b032d4
  • CVE Modified by [email protected]

    Apr. 23, 2019

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Jan. 18, 2018

    Action Type Old Value New Value
    Changed Reference Type https://security.gentoo.org/glsa/201701-58 No Types Assigned https://security.gentoo.org/glsa/201701-58 Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:a:icu_project:international_components_for_unicode:*:*:*:*:*:*:*:* versions up to (including) 57.1 OR *cpe:2.3:a:icu-project:international_components_for_unicode:*:*:*:*:*:c\/c\+\+:*:* versions up to (including) 57.1
  • CVE Modified by [email protected]

    Jul. 01, 2017

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/201701-58 [No Types Assigned]
  • Modified Analysis by [email protected]

    Aug. 04, 2016

    Action Type Old Value New Value
    Changed Reference Type http://openwall.com/lists/oss-security/2016/07/24/2 No Types Assigned http://openwall.com/lists/oss-security/2016/07/24/2 Mailing List
    Changed Reference Type https://bugs.php.net/72533 Exploit, Third Party Advisory https://bugs.php.net/72533 Third Party Advisory, Issue Tracking, Exploit
    Changed Reference Type http://git.php.net/?p=php-src.git;a=commit;h=aa82e99ed8003c01f1ef4f0940e56b85c5b032d4 Patch http://git.php.net/?p=php-src.git;a=commit;h=aa82e99ed8003c01f1ef4f0940e56b85c5b032d4 Issue Tracking, Patch
    Changed Reference Type http://www.securityfocus.com/bid/92127 No Types Assigned http://www.securityfocus.com/bid/92127 Third Party Advisory, VDB Entry
  • CVE Modified by [email protected]

    Aug. 04, 2016

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/92127
  • CVE Translated by [email protected]

    Jul. 30, 2016

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

    Jul. 28, 2016

    Action Type Old Value New Value
    Added CPE Configuration Configuration 1 OR *cpe:2.3:a:icu_project:international_components_for_unicode:57.1:*:*:*:*:*:*:* (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/72533 No Types Assigned https://bugs.php.net/72533 Third Party Advisory, Exploit
    Changed Reference Type http://git.php.net/?p=php-src.git;a=commit;h=aa82e99ed8003c01f1ef4f0940e56b85c5b032d4 No Types Assigned http://git.php.net/?p=php-src.git;a=commit;h=aa82e99ed8003c01f1ef4f0940e56b85c5b032d4 Patch
    Added CWE CWE-119
  • Initial Analysis by [email protected]

    Jul. 27, 2016

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Jul. 27, 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.

1.07 }} 0.37%

score

0.76732

percentile