# CVE-2011-1749: Denial of service in n/a

> Local attackers can corrupt the /etc/mtab file by exploiting resource limit checks in mount.nfs, potentially causing system instability or denial of service.

- **Severity:** Low 3.3 (`AV:L/AC:M/Au:N/C:N/I:P/A:P`)
- **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:** 26 Feb 2014
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2011-1749, GHSA-c72p-cwvx-7724, RHSA-2012:0310

## What is CVE-2011-1749?

CVE-2011-1749 is a low-severity denial of service vulnerability in n/a, published on 26 Feb 2014. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The nfs_addmntent function in support/nfs/nfs_mntent.c in the mount.nsf tool in nfs-utils before 1.2.4 attempts to append to the /etc/mtab file without first checking whether resource limits would interfere, which allows local users to corrupt this file via a process with a small RLIMIT_FSIZE value, a related issue to CVE-2011-1089.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2011-1749?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `nfs-utils` | Red Hat:enterprise_linux:5::client | All versions | 1:1.0.9-60.el5 |
| `nfs-utils-debuginfo` | Red Hat:enterprise_linux:5::client | All versions | 1:1.0.9-60.el5 |
| `nfs-utils` | Red Hat:enterprise_linux:5::server | All versions | 1:1.0.9-60.el5 |
| `nfs-utils-debuginfo` | Red Hat:enterprise_linux:5::server | All versions | 1:1.0.9-60.el5 |

Products: Linux-Nfs Nfs-Utils.

## How do I fix CVE-2011-1749?

Upgrade to a fixed version.

## Is CVE-2011-1749 being exploited?

There is no known exploitation of CVE-2011-1749 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2003-0252](https://insights.sbomify.com/CVE-2003-0252/): Memory corruption in n/a (critical 9.8)
- [CVE-2011-2500](https://insights.sbomify.com/CVE-2011-2500/): Auth bypass in n/a (high 7.5)
- [CVE-2025-12801](https://insights.sbomify.com/CVE-2025-12801/): Nfs-utils: rpc.mountd in the nfs-utils privilege escalation (medium 6.5)
- [CVE-2019-3689](https://insights.sbomify.com/CVE-2019-3689/): nfs-utils: root-owned files stored in insecure /var/lib/nfs directory (medium 5.1)
- [CVE-2013-1923](https://insights.sbomify.com/CVE-2013-1923/): Information disclosure in n/a (low 3.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-1749 and fix it if it is affected.

What it is: CVE-2011-1749 is a low-severity denial of service vulnerability in n/a, published on 26 Feb 2014. 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-2011-1749 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-2011-1749/ (Markdown: https://insights.sbomify.com/CVE-2011-1749/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-1749
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-1749
- OSV: https://osv.dev/vulnerability/CVE-2011-1749

---
From sbomify Insights: https://insights.sbomify.com/CVE-2011-1749/
Summaries are generated and may contain mistakes; the official description above is the record.