#VU38956 Improper Authentication in pgbouncer - CVE-2015-6817

Vulnerability identifier: #VU38956

Vulnerability risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2015-6817

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
pgbouncer
Other software / Other software solutions

Vendor: wiki.postgresql.org

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

PgBouncer 1.6.x before 1.6.1, when configured with auth_user, allows remote attackers to gain login access as auth_user via an unknown username.

Mitigation
Install update from vendor's website.

Vulnerable software versions

pgbouncer: 1.6

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External links
https://comments.gmane.org/gmane.comp.db.postgresql.pgbouncer.general/1251
https://www.openwall.com/lists/oss-security/2015/09/05/7
https://github.com/pgbouncer/pgbouncer/commit/7ca3e5279d05fceb1e8a043c6f5b6f58dea3ed38
https://github.com/pgbouncer/pgbouncer/issues/69
https://pgbouncer.github.io/2015/09/pgbouncer-1-6-1
https://security.gentoo.org/glsa/201701-24

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.