CVE-2015-4054 : PgBouncer before 1.5.5 allows remote attackers to cause a denial of service (NUL

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.

Published 2017-05-23 04:29:00

Updated 2020-11-03 18:16:07

Source Debian GNU/Linux

View at NVD, CVE.org

Vulnerability category: Memory CorruptionDenial of service

Products affected by CVE-2015-4054

Pgbouncer » Pgbouncer
Versions up to, including, (<=) 1.5.4
cpe:2.3:a:pgbouncer:pgbouncer:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2015-4054

EPSS FAQ

3.38%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 87 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2015-4054

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
7.5	HIGH	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2015-4054

CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2015-4054

http://www.securityfocus.com/bid/74751

PgBouncer src/client.c' Denial of Service Vulnerability
Third Party Advisory;VDB Entry
http://www.openwall.com/lists/oss-security/2015/05/22/5

oss-security - Re: CVE Request: pgbouncer: DoS/remote crash: invalid packet order causes lookup of NULL pointer
Mailing List;Third Party Advisory
https://github.com/pgbouncer/pgbouncer/commit/74d6e5f7de5ec736f71204b7b422af7380c19ac5

Check if auth_user is set. · pgbouncer/pgbouncer@74d6e5f · GitHub
Patch;Third Party Advisory
https://security.gentoo.org/glsa/201701-24

PgBouncer: Multiple vulnerabilities (GLSA 201701-24) — Gentoo security
Third Party Advisory

CVEs referencing this url
https://pgbouncer.github.io/changelog.html#pgbouncer-15x

PgBouncer changelog
Release Notes;Third Party Advisory
https://github.com/pgbouncer/pgbouncer/commit/edab5be6665b9e8de66c25ba527509b229468573

Check if auth_user is set. · pgbouncer/pgbouncer@edab5be · GitHub
Patch;Third Party Advisory
https://github.com/pgbouncer/pgbouncer/issues/42

pgbouncer 1.5.4 segmentation fault · Issue #42 · pgbouncer/pgbouncer · GitHub
Exploit;Third Party Advisory

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Vulnerability Details : CVE-2015-4054

Products affected by CVE-2015-4054

Exploit prediction scoring system (EPSS) score for CVE-2015-4054

CVSS scores for CVE-2015-4054

CWE ids for CVE-2015-4054

References for CVE-2015-4054