# CVE-2020-11656: Use after free in n/a

> A use-after-free flaw in SQLite's ALTER TABLE implementation allows attackers to potentially execute arbitrary code or cause a denial of service via crafted SQL queries.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 9 Apr 2020
- **Updated:** 14 Oct 2026
- **Also known as:** AZL-38947, BIT-sqlite-2020-11656, DEBIAN-CVE-2020-11656, GHSA-x2v5-p27f-53wp

## What is CVE-2020-11656?

CVE-2020-11656 is a critical use after free vulnerability in Netapp Ontap Select Deploy Administration Utility, published on 9 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

In SQLite through 3.31.1, the ALTER TABLE implementation has a use-after-free, as demonstrated by an ORDER BY clause that belongs to a compound SELECT statement.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2020-11656?

1 open source package ship an affected version, including sqlite. It affects 12 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `sqlite` | Bitnami | All versions | 3.31.2 |

Products: Netapp Ontap Select Deploy Administration Utility, Oracle Communications Messaging Server, Oracle Communications Network Charging and Control, Oracle Enterprise Manager Ops Center, Oracle Hyperion Infrastructure Technology, Oracle Mysql, Oracle Mysql Workbench, Oracle Outside in Technology, Oracle Zfs Storage Appliance Kit, Siemens Sinec Infrastructure Network Services, Sqlite Sqlite, Tenable Tenable.sc.

## How do I fix CVE-2020-11656?

Upgrade sqlite to 3.31.2 or later.

## Is CVE-2020-11656 being exploited?

There is no known exploitation of CVE-2020-11656 in the wild and no public exploit code.

## Other vulnerabilities in Netapp Ontap Select Deploy Administration Utility

- [CVE-2020-35527](https://insights.sbomify.com/CVE-2020-35527/): Memory corruption in sqlite (critical 9.8)
- [CVE-2019-5509](https://insights.sbomify.com/CVE-2019-5509/): Code injection in ONTAP Select Deploy administration utility (critical 9.8)
- [CVE-2019-5504](https://insights.sbomify.com/CVE-2019-5504/): Missing authorization in ONTAP Select Deploy administration utility (critical 9.8)
- [CVE-2019-5505](https://insights.sbomify.com/CVE-2019-5505/): Information disclosure in ONTAP Select Deploy administration utility (critical 9.8)
- [CVE-2024-21989](https://insights.sbomify.com/CVE-2024-21989/): Privilege Escalation Vulnerability in ONTAP Select Deploy administration utility (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-11656 and fix it if it is affected.

What it is: CVE-2020-11656 is a critical use after free vulnerability in Netapp Ontap Select Deploy Administration Utility, published on 9 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-11656 in the wild and no public exploit code.

Affected packages and fixed versions:
- sqlite (Bitnami): affected all versions; fixed in 3.31.2

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-2020-11656/ (Markdown: https://insights.sbomify.com/CVE-2020-11656/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-11656
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-11656
- OSV: https://osv.dev/vulnerability/CVE-2020-11656

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-11656/
Summaries are generated and may contain mistakes; the official description above is the record.