# CVE-2019-9755: Integer overflow in n/a

> A local attacker can exploit an integer underflow in ntfs-3g to achieve heap buffer overflow, potentially leading to arbitrary code execution or privilege escalation.

- **Severity:** High 7.0 (`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 5 Jun 2019
- **Updated:** 4 Aug 2024
- **Also known as:** ALPINE-CVE-2019-9755, AZL-6747, AZL-7293, DEBIAN-CVE-2019-9755, DLA-1724-1, DSA-4413-1, GHSA-497j-f639-7ww4, RHSA-2019:2308, SUSE-SU-2019:1000-1, SUSE-SU-2019:1001-1, UBUNTU-CVE-2019-9755, USN-3914-1, openSUSE-SU-2019:1314-1

## What is CVE-2019-9755?

CVE-2019-9755 is a high-severity vulnerability in Redhat Enterprise Linux, published on 5 Jun 2019. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An integer underflow issue exists in ntfs-3g 2017.3.23. A local attacker could potentially exploit this by running /bin/ntfs-3g with specially crafted arguments from a specially crafted directory to cause a heap buffer overflow, resulting in a crash or the ability to execute arbitrary code. In installations where /bin/ntfs-3g is a setuid-root binary, this could lead to a local escalation of privileges.

Weakness: CWE-787 (Out-of-bounds Write), CWE-191 (Integer Underflow (Wrap or Wraparound))

## Which versions are affected by CVE-2019-9755?

It affects 6 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `libguestfs-winsupport` | Red Hat:enterprise_linux:7::server | All versions | 0:7.2-3.el7 |
| `ntfs-3g_ntfsprogs` | SUSE:Linux Enterprise Desktop 12 SP3 | All versions | 2013.1.13-5.6.1 |
| `ntfs-3g_ntfsprogs` | SUSE:Linux Enterprise Desktop 12 SP4 | All versions | 2013.1.13-5.6.1 |
| `ntfs-3g_ntfsprogs` | SUSE:Linux Enterprise Software Development Kit 12 SP3 | All versions | 2013.1.13-5.6.1 |
| `ntfs-3g_ntfsprogs` | SUSE:Linux Enterprise Software Development Kit 12 SP4 | All versions | 2013.1.13-5.6.1 |
| `ntfs-3g_ntfsprogs` | SUSE:Linux Enterprise Workstation Extension 12 SP3 | All versions | 2013.1.13-5.6.1 |
| `ntfs-3g_ntfsprogs` | SUSE:Linux Enterprise Workstation Extension 12 SP4 | All versions | 2013.1.13-5.6.1 |
| `ntfs-3g_ntfsprogs` | SUSE:Linux Enterprise Workstation Extension 15 | All versions | 2016.2.22-3.3.2 |
| `ntfs-3g_ntfsprogs` | openSUSE:Leap 15.0 | All versions | 2016.2.22-lp150.2.3.1 |

Products: Redhat Enterprise Linux, Redhat Enterprise Linux Eus, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus, Redhat Enterprise Linux Server Tus, Tuxera Ntfs-3g.

## How do I fix CVE-2019-9755?

Apply the vendor's patch.

## Is CVE-2019-9755 being exploited?

There is no known exploitation of CVE-2019-9755 in the wild and no public exploit code.

## Other vulnerabilities in Redhat Enterprise Linux

- [CVE-2018-14667](https://insights.sbomify.com/CVE-2018-14667/): Red Hat JBoss RichFaces Framework Expression Language Injection (critical 9.8, exploited in the wild)
- [CVE-2021-20325](https://insights.sbomify.com/CVE-2021-20325/): Missing fixes for CVE-2021-40438 and CVE-2021-26691 in the versions of httpd, as shipped in Red Hat Enterprise Linux 8.5.0, causes a securit (critical 9.8)
- [CVE-2018-25011](https://insights.sbomify.com/CVE-2018-25011/): Memory corruption in libwebp (critical 9.8)
- [CVE-2018-25014](https://insights.sbomify.com/CVE-2018-25014/): Other in libwebp (critical 9.8)
- [CVE-2014-3585](https://insights.sbomify.com/CVE-2014-3585/): Supply chain in redhat-upgrade-tool (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-9755 and fix it if it is affected.

What it is: CVE-2019-9755 is a high-severity vulnerability in Redhat Enterprise Linux, published on 5 Jun 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-9755 in the wild and no public exploit code.

Affected product: Redhat Enterprise Linux. 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-2019-9755/ (Markdown: https://insights.sbomify.com/CVE-2019-9755/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-9755
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-9755
- OSV: https://osv.dev/vulnerability/CVE-2019-9755

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-9755/
Summaries are generated and may contain mistakes; the official description above is the record.