CVE-2015-4054

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.

• CWE-476

• http://www.openwall.com/lists/oss-security/2015/05/22/5Mailing List, Third Party Advisory
• http://www.securityfocus.com/bid/74751Third Party Advisory, VDB Entry
• https://github.com/pgbouncer/pgbouncer/commit/74d6e5f7de5ec736f71204b7b422af7380c19ac5Patch, Third Party Advisory
• https://github.com/pgbouncer/pgbouncer/commit/edab5be6665b9e8de66c25ba527509b229468573Patch, Third Party Advisory
• https://github.com/pgbouncer/pgbouncer/issues/42Exploit, Third Party Advisory
• https://pgbouncer.github.io/changelog.html#pgbouncer-15xRelease Notes, Third Party Advisory
• https://security.gentoo.org/glsa/201701-24Third Party Advisory
• http://www.openwall.com/lists/oss-security/2015/05/22/5Mailing List, Third Party Advisory
• http://www.securityfocus.com/bid/74751Third Party Advisory, VDB Entry
• https://github.com/pgbouncer/pgbouncer/commit/74d6e5f7de5ec736f71204b7b422af7380c19ac5Patch, Third Party Advisory
• https://github.com/pgbouncer/pgbouncer/commit/edab5be6665b9e8de66c25ba527509b229468573Patch, Third Party Advisory
• https://github.com/pgbouncer/pgbouncer/issues/42Exploit, Third Party Advisory
• https://pgbouncer.github.io/changelog.html#pgbouncer-15xRelease Notes, Third Party Advisory
• https://security.gentoo.org/glsa/201701-24Third Party Advisory

Published

May 23, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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