# CVE-2023-29132: Use after free in n/a

> A use-after-free in Irssi allows attackers to execute arbitrary code or cause denial of service via concurrent line printing.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 14 Apr 2023
- **Updated:** 6 Feb 2025
- **Also known as:** DEBIAN-CVE-2023-29132, GHSA-rx4q-gwv4-r27p, MGASA-2024-0063, openSUSE-SU-2024:12848-1

## What is CVE-2023-29132?

CVE-2023-29132 is a medium-severity use after free vulnerability in n/a, published on 14 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Irssi 1.3.x and 1.4.x before 1.4.4 has a use-after-free because of use of a stale special collector reference. This occurs when printing of a non-formatted line is concurrent with printing of a formatted line.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2023-29132?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `irssi` | openSUSE:Tumbleweed | All versions | 1.4.4-2.1 |

Products: Irssi Irssi.

## How do I fix CVE-2023-29132?

Upgrade to a fixed version.

## Is CVE-2023-29132 being exploited?

There is no known exploitation of CVE-2023-29132 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2002-1840](https://insights.sbomify.com/CVE-2002-1840/): Hardcoded credentials in n/a (critical 10.0)
- [CVE-2017-10965](https://insights.sbomify.com/CVE-2017-10965/): Null dereference in n/a (critical 9.8)
- [CVE-2017-10966](https://insights.sbomify.com/CVE-2017-10966/): Use after free in n/a (critical 9.8)
- [CVE-2017-7191](https://insights.sbomify.com/CVE-2017-7191/): Use after free in n/a (critical 9.8)
- [CVE-2007-4396](https://insights.sbomify.com/CVE-2007-4396/): Command injection in n/a (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-29132 and fix it if it is affected.

What it is: CVE-2023-29132 is a medium-severity use after free vulnerability in n/a, published on 14 Apr 2023. 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-2023-29132 in the wild and no public exploit code.

Affected product: n/a. 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-2023-29132/ (Markdown: https://insights.sbomify.com/CVE-2023-29132/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-29132
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-29132
- OSV: https://osv.dev/vulnerability/CVE-2023-29132

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-29132/
Summaries are generated and may contain mistakes; the official description above is the record.