7.3
HIGH
CVE-2015-6831
PHP SPL Unserialization Use-After-Free Vulnerability
Description

Multiple use-after-free vulnerabilities in SPL in PHP before 5.4.44, 5.5.x before 5.5.28, and 5.6.x before 5.6.12 allow remote attackers to execute arbitrary code via vectors involving (1) ArrayObject, (2) SplObjectStorage, and (3) SplDoublyLinkedList, which are mishandled during unserialization.

INFO

Published Date :

Jan. 19, 2016, 5:59 a.m.

Last Modified :

Nov. 7, 2023, 2:27 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.4

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2015-6831 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 Debian debian_linux
1 Php php

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).

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

The following list is the news that have been mention CVE-2015-6831 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2015-6831 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 [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 OpenText http://www.debian.org/security/2015/dsa-3344 [No types assigned]
    Added Reference OpenText http://www.securityfocus.com/bid/76737 [No types assigned]
    Added Reference OpenText https://bugs.php.net/bug.php?id=70169 [No types assigned]
    Added Reference OpenText https://bugs.php.net/bug.php?id=70168 [No types assigned]
    Added Reference OpenText http://www.openwall.com/lists/oss-security/2015/08/19/3 [No types assigned]
    Added Reference OpenText http://www.php.net/ChangeLog-5.php [No types assigned]
    Added Reference OpenText https://bugs.php.net/bug.php?id=70166 [No types assigned]
    Added Reference OpenText https://bugs.php.net/bug.php?id=70155 [No types assigned]
    Added Reference OpenText https://security.gentoo.org/glsa/201606-10 [No types assigned]
    Removed Reference SUSE https://bugs.php.net/bug.php?id=70168
    Removed Reference SUSE https://bugs.php.net/bug.php?id=70155
    Removed Reference SUSE http://www.php.net/ChangeLog-5.php
    Removed Reference SUSE https://bugs.php.net/bug.php?id=70166
    Removed Reference SUSE https://bugs.php.net/bug.php?id=70169
    Removed Reference SUSE http://www.openwall.com/lists/oss-security/2015/08/19/3
    Removed Reference SUSE http://www.securityfocus.com/bid/76737
    Removed Reference SUSE https://security.gentoo.org/glsa/201606-10
    Removed Reference SUSE http://www.debian.org/security/2015/dsa-3344
  • CVE Source Update by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Changed Source SUSE OpenText
  • Modified Analysis by [email protected]

    Aug. 05, 2022

    Action Type Old Value New Value
    Removed Evaluator Description <a href="http://cwe.mitre.org/data/definitions/416.html">CWE-416: Use After Free</a>
    Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
    Changed Reference Type http://www.debian.org/security/2015/dsa-3344 No Types Assigned http://www.debian.org/security/2015/dsa-3344 Third Party Advisory
    Changed Reference Type http://www.openwall.com/lists/oss-security/2015/08/19/3 No Types Assigned http://www.openwall.com/lists/oss-security/2015/08/19/3 Mailing List, Third Party Advisory
    Changed Reference Type http://www.php.net/ChangeLog-5.php Vendor Advisory http://www.php.net/ChangeLog-5.php Release Notes, Vendor Advisory
    Changed Reference Type http://www.securityfocus.com/bid/76737 No Types Assigned http://www.securityfocus.com/bid/76737 Third Party Advisory, VDB Entry
    Changed Reference Type https://bugs.php.net/bug.php?id=70155 Exploit https://bugs.php.net/bug.php?id=70155 Exploit, Issue Tracking, Vendor Advisory
    Changed Reference Type https://bugs.php.net/bug.php?id=70166 Exploit https://bugs.php.net/bug.php?id=70166 Exploit, Issue Tracking, Vendor Advisory
    Changed Reference Type https://bugs.php.net/bug.php?id=70168 Exploit https://bugs.php.net/bug.php?id=70168 Exploit, Issue Tracking, Vendor Advisory
    Changed Reference Type https://bugs.php.net/bug.php?id=70169 Exploit https://bugs.php.net/bug.php?id=70169 Exploit, Issue Tracking, Vendor Advisory
    Changed Reference Type https://security.gentoo.org/glsa/201606-10 No Types Assigned https://security.gentoo.org/glsa/201606-10 Third Party Advisory
    Removed CWE NIST NVD-CWE-Other
    Added CWE NIST CWE-416
    Changed CPE Configuration OR *cpe:2.3:a:php:php:5.4.43:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:alpha1:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:alpha2:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:alpha3:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:alpha4:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:alpha5:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:alpha6:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:beta1:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:beta2:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:beta3:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:beta4:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:rc1:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:rc2:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.1:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.2:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.3:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.4:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.5:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.6:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.7:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.8:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.9:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.10:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.11:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.12:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.13:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.14:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.18:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.19:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.20:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.21:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.22:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.23:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.24:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.25:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.26:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.27:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:alpha1:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:alpha2:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:alpha3:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:alpha4:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:alpha5:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:beta1:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:beta2:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:beta3:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:beta4:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.4:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.5:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.6:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.7:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.8:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.9:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.10:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.11:*:*:*:*:*:*:* OR *cpe:2.3:a:php:php:*:*:*:*:*:*:*:* versions up to (excluding) 5.4.44 *cpe:2.3:a:php:php:*:*:*:*:*:*:*:* versions from (including) 5.5.0 up to (excluding) 5.5.28 *cpe:2.3:a:php:php:*:*:*:*:*:*:*:* versions from (including) 5.6.0 up to (excluding) 5.6.12
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Nov. 04, 2017

    Action Type Old Value New Value
    Added Reference http://www.debian.org/security/2015/dsa-3344 [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 30, 2016

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/201606-10 [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 28, 2016

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/76737 [No Types Assigned]
  • Modified Analysis by [email protected]

    Jan. 22, 2016

    Action Type Old Value New Value
    Added Evaluator Description <a href="http://cwe.mitre.org/data/definitions/416.html">CWE-416: Use After Free</a>
    Added CPE Configuration Configuration 1 OR *cpe:2.3:a:php:php:5.4.43:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.27:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.26:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.25:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.24:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.9:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.8:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.7:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.6:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.5:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.4:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.3:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.23:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.22:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.21:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.20:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.2:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.19:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.18:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.14:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.13:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.12:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.11:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.10:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.1:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:rc2:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:rc1:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:beta4:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:beta3:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:beta2:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:beta1:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:alpha6:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:alpha5:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:alpha4:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:alpha3:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:alpha2:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:alpha1:*:*:*:*:*:* *cpe:2.3:a:php:php:5.5.0:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.11:*:*:*:*:*:*:* *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:5.6.10:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:beta4:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:beta3:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:beta2:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:beta1:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:alpha5:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:alpha4:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:alpha3:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:alpha2:*:*:*:*:*:* *cpe:2.3:a:php:php:5.6.0:alpha1:*:*:*:*:*:*
    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:L/I:L/A:L
    Changed Reference Type https://bugs.php.net/bug.php?id=70168 No Types Assigned https://bugs.php.net/bug.php?id=70168 Exploit
    Changed Reference Type https://bugs.php.net/bug.php?id=70155 No Types Assigned https://bugs.php.net/bug.php?id=70155 Exploit
    Changed Reference Type https://bugs.php.net/bug.php?id=70166 No Types Assigned https://bugs.php.net/bug.php?id=70166 Exploit
    Changed Reference Type http://www.php.net/ChangeLog-5.php No Types Assigned http://www.php.net/ChangeLog-5.php Advisory
    Changed Reference Type https://bugs.php.net/bug.php?id=70169 No Types Assigned https://bugs.php.net/bug.php?id=70169 Exploit
    Added CWE NVD-CWE-Other
  • Initial Analysis by [email protected]

    Jan. 22, 2016

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

    Jan. 21, 2016

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2015/08/19/3
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.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2015-6831 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-2015-6831 weaknesses.

Exploit Prediction

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

2.24 }} 0.05%

score

0.89750

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability