# CVE-2019-1010023: Code injection in glibc

> Attackers can execute arbitrary code and potentially escalate privileges by tricking users into running ldd on malicious ELF files in the GNU C Library.
 

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 15 Jul 2019
- **Updated:** 14 Oct 2026
- **Also known as:** DEBIAN-CVE-2019-1010023, GHSA-x8wp-c333-hv92, MINI-j3rr-48mm-ch3f, MINI-jmmw-4597-rmjp, MINI-q79w-4948-65pp, ROOT-OS-DEBIAN-12-CVE-2019-1010023, ROOT-OS-DEBIAN-13-CVE-2019-1010023, UBUNTU-CVE-2019-1010023

## What is CVE-2019-1010023?

CVE-2019-1010023 is a medium-severity code injection vulnerability in Gnu Glibc, published on 15 Jul 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

GNU Libc current is affected by: Re-mapping current loaded library with malicious ELF file. The impact is: In worst case attacker may evaluate privileges. The component is: libld. The attack vector is: Attacker sends 2 ELF files to victim and asks to run ldd on it. ldd execute code. NOTE: Upstream comments indicate "this is being treated as a non-security bug and no real threat.

## Which versions are affected by CVE-2019-1010023?

It affects 1 product.


Products: Gnu Glibc.

## How do I fix CVE-2019-1010023?

No fix published yet.

## Is CVE-2019-1010023 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-1010023 exists.

## Other vulnerabilities in Gnu Glibc

- [CVE-2026-5450](https://insights.sbomify.com/CVE-2026-5450/): scanf %mc off-by-one heap buffer overflow (critical 9.8)
- [CVE-2023-25139](https://insights.sbomify.com/CVE-2023-25139/): Memory corruption in n/a (critical 9.8)
- [CVE-1999-0199](https://insights.sbomify.com/CVE-1999-0199/): Other in n/a (critical 9.8)
- [CVE-2019-1010022](https://insights.sbomify.com/CVE-2019-1010022/): Security feature bypass in glibc (critical 9.8)
- [CVE-2005-3590](https://insights.sbomify.com/CVE-2005-3590/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-1010023 and fix it if it is affected.

What it is: CVE-2019-1010023 is a medium-severity code injection vulnerability in Gnu Glibc, published on 15 Jul 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-1010023 exists.

Affected product: Gnu Glibc. 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-2019-1010023/ (Markdown: https://insights.sbomify.com/CVE-2019-1010023/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-1010023
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-1010023
- OSV: https://osv.dev/vulnerability/CVE-2019-1010023

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-1010023/
Summaries are generated and may contain mistakes; the official description above is the record.