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7.5
HIGH CVSS 3.0
CVE-2015-4054
PgBouncer NULL Pointer Dereference Remote Denial of Service
Description

PgBouncer before 1.5.5 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) by sending a password packet before a startup packet.

INFO

Published Date :

May 23, 2017, 4:29 a.m.

Last Modified :

April 20, 2025, 1:37 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2015-4054 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 Pgbouncer pgbouncer
: 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 MEDIUM [email protected]
CVSS 3.0 HIGH [email protected]
Solution
Upgrade PgBouncer to address a NULL pointer dereference vulnerability.
  • Upgrade PgBouncer to a version greater than or equal to 1.5.5.
  • Consult vendor documentation for upgrade instructions.
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-2015-4054.

URL Resource
http://www.openwall.com/lists/oss-security/2015/05/22/5 Mailing List Third Party Advisory
http://www.securityfocus.com/bid/74751 Third Party Advisory VDB Entry
https://github.com/pgbouncer/pgbouncer/commit/74d6e5f7de5ec736f71204b7b422af7380c19ac5 Patch Third Party Advisory
https://github.com/pgbouncer/pgbouncer/commit/edab5be6665b9e8de66c25ba527509b229468573 Patch Third Party Advisory
https://github.com/pgbouncer/pgbouncer/issues/42 Exploit Third Party Advisory
https://pgbouncer.github.io/changelog.html#pgbouncer-15x Release Notes Third Party Advisory
https://security.gentoo.org/glsa/201701-24 Third Party Advisory
http://www.openwall.com/lists/oss-security/2015/05/22/5 Mailing List Third Party Advisory
http://www.securityfocus.com/bid/74751 Third Party Advisory VDB Entry
https://github.com/pgbouncer/pgbouncer/commit/74d6e5f7de5ec736f71204b7b422af7380c19ac5 Patch Third Party Advisory
https://github.com/pgbouncer/pgbouncer/commit/edab5be6665b9e8de66c25ba527509b229468573 Patch Third Party Advisory
https://github.com/pgbouncer/pgbouncer/issues/42 Exploit Third Party Advisory
https://pgbouncer.github.io/changelog.html#pgbouncer-15x Release Notes Third Party Advisory
https://security.gentoo.org/glsa/201701-24 Third Party Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2015-4054 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-2015-4054 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).

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

The following list is the news that have been mention CVE-2015-4054 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-2015-4054 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://www.openwall.com/lists/oss-security/2015/05/22/5
    Added Reference http://www.securityfocus.com/bid/74751
    Added Reference https://github.com/pgbouncer/pgbouncer/commit/74d6e5f7de5ec736f71204b7b422af7380c19ac5
    Added Reference https://github.com/pgbouncer/pgbouncer/commit/edab5be6665b9e8de66c25ba527509b229468573
    Added Reference https://github.com/pgbouncer/pgbouncer/issues/42
    Added Reference https://pgbouncer.github.io/changelog.html#pgbouncer-15x
    Added Reference https://security.gentoo.org/glsa/201701-24
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CPE Deprecation Remap by [email protected]

    Nov. 03, 2020

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:pgbouncer_project:pgbouncer:*:*:*:*:*:*:*:* versions from (including) 1.5.4 OR *cpe:2.3:a:pgbouncer:pgbouncer:*:*:*:*:*:*:*:* versions from (including) 1.5.4
  • Initial Analysis by [email protected]

    Jun. 02, 2017

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://github.com/pgbouncer/pgbouncer/commit/edab5be6665b9e8de66c25ba527509b229468573 No Types Assigned https://github.com/pgbouncer/pgbouncer/commit/edab5be6665b9e8de66c25ba527509b229468573 Patch, Third Party Advisory
    Changed Reference Type https://security.gentoo.org/glsa/201701-24 No Types Assigned https://security.gentoo.org/glsa/201701-24 Third Party Advisory
    Changed Reference Type https://github.com/pgbouncer/pgbouncer/issues/42 No Types Assigned https://github.com/pgbouncer/pgbouncer/issues/42 Exploit, Third Party Advisory
    Changed Reference Type https://pgbouncer.github.io/changelog.html#pgbouncer-15x No Types Assigned https://pgbouncer.github.io/changelog.html#pgbouncer-15x Release Notes, Third Party Advisory
    Changed Reference Type https://github.com/pgbouncer/pgbouncer/commit/74d6e5f7de5ec736f71204b7b422af7380c19ac5 No Types Assigned https://github.com/pgbouncer/pgbouncer/commit/74d6e5f7de5ec736f71204b7b422af7380c19ac5 Patch, Third Party Advisory
    Changed Reference Type http://www.securityfocus.com/bid/74751 No Types Assigned http://www.securityfocus.com/bid/74751 Third Party Advisory, VDB Entry
    Changed Reference Type http://www.openwall.com/lists/oss-security/2015/05/22/5 No Types Assigned http://www.openwall.com/lists/oss-security/2015/05/22/5 Mailing List, Third Party Advisory
    Added CWE CWE-476
    Added CPE Configuration OR *cpe:2.3:a:pgbouncer_project:pgbouncer:1.5.4:*:*:*:*:*:*:* (and previous)
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: 7.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 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.

3.38 }} -2.44%

score

0.86222

percentile