# CVE-2012-5627: Weak cryptography in n/a

> Remote authenticated users can brute force passwords more easily because the salt is not modified during multiple change_user commands in the same connection.

- **Severity:** Medium 4.0 (`AV:N/AC:L/Au:S/C:P/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 1 Oct 2013
- **Updated:** 6 Aug 2024
- **Also known as:** AZL-6692, GHSA-46h7-m4g6-26pp, UBUNTU-CVE-2012-5627

## What is CVE-2012-5627?

CVE-2012-5627 is a medium-severity vulnerability in Mariadb Mariadb, published on 1 Oct 2013. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Oracle MySQL and MariaDB 5.5.x before 5.5.29, 5.3.x before 5.3.12, and 5.2.x before 5.2.14 does not modify the salt during multiple executions of the change_user command within the same connection which makes it easier for remote authenticated users to conduct brute force password guessing attacks.

Weakness: CWE-522 (Insufficiently Protected Credentials)

## Which versions are affected by CVE-2012-5627?

It affects 2 products.


Products: Mariadb Mariadb, Oracle Mysql.

## How do I fix CVE-2012-5627?

Upgrade to a fixed version.

## Is CVE-2012-5627 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2012-5627 exists.

Public exploit code:

- Oracle MySQL / MariaDB - Insecure Salt Generation Security Bypass (exploitdb)

## Other vulnerabilities in Mariadb Mariadb

- [CVE-2026-49261](https://insights.sbomify.com/CVE-2026-49261/): MariaDB server has unsafe parameter handling in `wsrep_notify_cmd` (critical 10.0)
- [CVE-2026-85746](https://insights.sbomify.com/CVE-2026-85746/): MariaDB: Out-of-bound buffer write on in `ST_AsText` of nested GeometryCollections (critical 9.9)
- [CVE-2026-85748](https://insights.sbomify.com/CVE-2026-85748/): MariaDB: Use-after-free with a large number of SYS_REFCURSOR's (critical 9.9)
- [CVE-2026-92262](https://insights.sbomify.com/CVE-2026-92262/): MariaDB: Numerous issues caused by historical #mysql50# tablename encoding bypass. (critical 9.9)
- [CVE-2023-26785](https://insights.sbomify.com/CVE-2023-26785/): Code injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2012-5627 and fix it if it is affected.

What it is: CVE-2012-5627 is a medium-severity vulnerability in Mariadb Mariadb, published on 1 Oct 2013. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2012-5627 exists.

Affected product: Mariadb Mariadb. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2012-5627/ (Markdown: https://insights.sbomify.com/CVE-2012-5627/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2012-5627
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2012-5627
- OSV: https://osv.dev/vulnerability/CVE-2012-5627

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From sbomify Insights: https://insights.sbomify.com/CVE-2012-5627/
Summaries are generated and may contain mistakes; the official description above is the record.