VIR Vulnerability Intelligence Relay

CVE-2012-2122

medium
Published 2012-06-26 · Modified 2026-04-29
💬 Discuss on Community ✚ Propose mitigation
CVSS v3
—
CVSS v4 NEW
—
not yet in upstream
VIR risk
6.1

Description

sql/password.c in Oracle MySQL 5.1.x before 5.1.63, 5.5.x before 5.5.24, and 5.6.x before 5.6.6, and MariaDB 5.1.x before 5.1.62, 5.2.x before 5.2.12, 5.3.x before 5.3.6, and 5.5.x before 5.5.23, when running in certain environments with certain implementations of the memcmp function, allows remote attackers to bypass authentication by repeatedly authenticating with the same incorrect password, which eventually causes a token comparison to succeed due to an improperly-checked return value.

Predictions

Exploit likelihood
20%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-19092 remote multiple verified
David Kennedy (ReL1K) · 2012-06-12

MySQL - Authentication Bypass

Source code queued for fetch — refresh in a moment.

Metasploit modules

auxiliary_scanner/mysql/mysql_authbypass_hashdump rank 300
MySQL Authentication Bypass Password Dump
Source fetch failed: fetch_error — view the original via the link above.

Application impact
VendorProductVersionsFixed
oracle oraclemysql5.1.51
oracle oraclemysql5.1.52
oracle oraclemysql5.1.53
oracle oraclemysql5.1.54
oracle oraclemysql5.1.55
oracle oraclemysql5.1.56
oracle oraclemysql5.1.57
oracle oraclemysql5.1.58
oracle oraclemysql5.1.59
oracle oraclemysql5.1.60
oracle oraclemysql5.1.61
oracle oraclemysql5.5.10
oracle oraclemysql5.5.11
oracle oraclemysql5.5.12
oracle oraclemysql5.5.13
oracle oraclemysql5.5.14
oracle oraclemysql5.5.15
oracle oraclemysql5.5.16
oracle oraclemysql5.5.17
oracle oraclemysql5.5.18
oracle oraclemysql5.5.19
oracle oraclemysql5.5.20
oracle oraclemysql5.5.21
oracle oraclemysql5.6.2
oracle oraclemysql5.6.3
oracle oraclemysql5.6.4
oracle oraclemysql5.6.5
mysql mariadbmariadb5.1.41
mysql mariadbmariadb5.1.42
mysql mariadbmariadb5.1.44
mysql mariadbmariadb5.1.47
mysql mariadbmariadb5.1.49
mysql mariadbmariadb5.1.50
mysql mariadbmariadb5.1.51
mysql mariadbmariadb5.1.53
mysql mariadbmariadb5.1.55
mysql mariadbmariadb5.1.60
mysql mariadbmariadb5.1.61
mysql mariadbmariadb5.2.0
mysql mariadbmariadb5.2.1
mysql mariadbmariadb5.2.2
mysql mariadbmariadb5.2.3
mysql mariadbmariadb5.2.4
mysql mariadbmariadb5.2.5
mysql mariadbmariadb5.2.6
mysql mariadbmariadb5.2.7
mysql mariadbmariadb5.2.8
mysql mariadbmariadb5.2.9
mysql mariadbmariadb5.2.10
mysql mariadbmariadb5.2.11
mysql mariadbmariadb5.3.0
mysql mariadbmariadb5.3.1
mysql mariadbmariadb5.3.2
mysql mariadbmariadb5.3.3
mysql mariadbmariadb5.3.4
mysql mariadbmariadb5.3.5
mysql mariadbmariadb5.3.6
mysql mariadbmariadb5.5.20
mysql mariadbmariadb5.5.21
mysql mariadbmariadb5.5.22

References

CWEs

CWE-287

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.