5.5
MEDIUM
CVE-2015-2326
PCRE Denial of Service Integer Overflow
Description

The pcre_compile2 function in PCRE before 8.37 allows context-dependent attackers to compile incorrect code and cause a denial of service (out-of-bounds read) via regular expression with a group containing both a forward referencing subroutine call and a recursive back reference, as demonstrated by "((?+1)(\1))/".

INFO

Published Date :

Jan. 14, 2020, 5:15 p.m.

Last Modified :

Jan. 19, 2023, 4:38 p.m.

Remotely Exploitable :

No

Impact Score :

3.6

Exploitability Score :

1.8
Affected Products

The following products are affected by CVE-2015-2326 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 Mariadb mariadb
1 Php php
1 Opensuse opensuse
1 Pcre pcre
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-2015-2326.

URL Resource
http://lists.opensuse.org/opensuse-updates/2015-05/msg00014.html Mailing List Third Party Advisory
https://bugs.exim.org/show_bug.cgi?id=1592 Exploit Issue Tracking Permissions Required Third Party Advisory
https://fortiguard.com/zeroday/FG-VD-15-016 Third Party Advisory
https://www.pcre.org/original/changelog.txt Release Notes Third Party Advisory

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-2015-2326 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2015-2326 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
  • Reanalysis by [email protected]

    Jan. 19, 2023

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:php:php:*:*:*:*:*:*:*:* versions from (including) 5.4.0 up to (excluding) 5.4.41 *cpe:2.3:a:php:php:*:*:*:*:*:*:*:* versions from (including) 5.5.0 up to (excluding) 5.5.26 *cpe:2.3:a:php:php:*:*:*:*:*:*:*:* versions from (including) 5.6.0 up to (excluding) 5.6.9
  • Reanalysis by [email protected]

    Aug. 04, 2022

    Action Type Old Value New Value
    Changed Reference Type https://bugs.exim.org/show_bug.cgi?id=1592 Exploit, Issue Tracking, Third Party Advisory https://bugs.exim.org/show_bug.cgi?id=1592 Exploit, Issue Tracking, Permissions Required, Third Party Advisory
    Changed Reference Type https://www.pcre.org/original/changelog.txt Release Notes https://www.pcre.org/original/changelog.txt Release Notes, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:* versions from (including) 10.0.0 up to (excluding) 10.0.18
  • Initial Analysis by [email protected]

    Jan. 24, 2020

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
    Changed Reference Type http://lists.opensuse.org/opensuse-updates/2015-05/msg00014.html No Types Assigned http://lists.opensuse.org/opensuse-updates/2015-05/msg00014.html Mailing List, Third Party Advisory
    Changed Reference Type https://bugs.exim.org/show_bug.cgi?id=1592 No Types Assigned https://bugs.exim.org/show_bug.cgi?id=1592 Exploit, Issue Tracking, Third Party Advisory
    Changed Reference Type https://fortiguard.com/zeroday/FG-VD-15-016 No Types Assigned https://fortiguard.com/zeroday/FG-VD-15-016 Third Party Advisory
    Changed Reference Type https://www.pcre.org/original/changelog.txt No Types Assigned https://www.pcre.org/original/changelog.txt Release Notes
    Added CWE NIST CWE-125
    Added CPE Configuration OR *cpe:2.3:a:pcre:pcre:*:*:*:*:*:*:*:* versions up to (excluding) 8.37
    Added CPE Configuration OR *cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:* *cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
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-2015-2326 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-2015-2326 weaknesses.

Exploit Prediction

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

0.10 }} 0.00%

score

0.39587

percentile

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