# CVE-2013-4449: Use after free in n/a > Remote attackers can crash the OpenLDAP server by triggering a use-after-free condition in the rwm overlay during search operations. - **Severity:** Medium 4.3 (`AV:N/AC:M/Au:N/C:N/I:N/A:P`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 5 Feb 2014 - **Updated:** 6 Aug 2024 - **Also known as:** DEBIAN-CVE-2013-4449, GHSA-rmpx-9wfm-j7j4, MGASA-2014-0062, RHSA-2014:0126, RHSA-2014:0206, UBUNTU-CVE-2013-4449 ## What is CVE-2013-4449? CVE-2013-4449 is a medium-severity use after free vulnerability in Debian Debian Linux, published on 5 Feb 2014. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description The rwm overlay in OpenLDAP 2.4.23, 2.4.36, and earlier does not properly count references, which allows remote attackers to cause a denial of service (slapd crash) by unbinding immediately after a search request, which triggers rwm_conn_destroy to free the session context while it is being used by rwm_op_search. Weakness: CWE-189 ## Which versions are affected by CVE-2013-4449? It affects 2 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `compat-openldap` | Red Hat:enterprise_linux:5::client | All versions | 0:2.3.43_2.2.29-27.el5_10 | | `openldap` | Red Hat:enterprise_linux:5::client | All versions | 0:2.3.43-27.el5_10 | | `openldap-clients` | Red Hat:enterprise_linux:5::client | All versions | 0:2.3.43-27.el5_10 | | `openldap-debuginfo` | Red Hat:enterprise_linux:5::client | All versions | 0:2.3.43-27.el5_10 | | `openldap` | Red Hat:enterprise_linux:5::client_workstation | All versions | 0:2.3.43-27.el5_10 | | `openldap-debuginfo` | Red Hat:enterprise_linux:5::client_workstation | All versions | 0:2.3.43-27.el5_10 | | `openldap-devel` | Red Hat:enterprise_linux:5::client_workstation | All versions | 0:2.3.43-27.el5_10 | | `openldap-servers` | Red Hat:enterprise_linux:5::client_workstation | All versions | 0:2.3.43-27.el5_10 | | `openldap-servers-overlays` | Red Hat:enterprise_linux:5::client_workstation | All versions | 0:2.3.43-27.el5_10 | | `openldap-servers-sql` | Red Hat:enterprise_linux:5::client_workstation | All versions | 0:2.3.43-27.el5_10 | | `compat-openldap` | Red Hat:enterprise_linux:5::server | All versions | 0:2.3.43_2.2.29-27.el5_10 | | `openldap` | Red Hat:enterprise_linux:5::server | All versions | 0:2.3.43-27.el5_10 | | `openldap-clients` | Red Hat:enterprise_linux:5::server | All versions | 0:2.3.43-27.el5_10 | | `openldap-debuginfo` | Red Hat:enterprise_linux:5::server | All versions | 0:2.3.43-27.el5_10 | | `openldap-devel` | Red Hat:enterprise_linux:5::server | All versions | 0:2.3.43-27.el5_10 | | `openldap-servers` | Red Hat:enterprise_linux:5::server | All versions | 0:2.3.43-27.el5_10 | | `openldap-servers-overlays` | Red Hat:enterprise_linux:5::server | All versions | 0:2.3.43-27.el5_10 | | `openldap-servers-sql` | Red Hat:enterprise_linux:5::server | All versions | 0:2.3.43-27.el5_10 | | `openldap` | Red Hat:enterprise_linux:6::client | All versions | 0:2.4.23-34.el6_5.1 | | `openldap-clients` | Red Hat:enterprise_linux:6::client | All versions | 0:2.4.23-34.el6_5.1 | | `openldap-debuginfo` | Red Hat:enterprise_linux:6::client | All versions | 0:2.4.23-34.el6_5.1 | | `openldap-devel` | Red Hat:enterprise_linux:6::client | All versions | 0:2.4.23-34.el6_5.1 | | `openldap-servers` | Red Hat:enterprise_linux:6::client | All versions | 0:2.4.23-34.el6_5.1 | | `openldap-servers-sql` | Red Hat:enterprise_linux:6::client | All versions | 0:2.4.23-34.el6_5.1 | | `openldap` | Red Hat:enterprise_linux:6::computenode | All versions | 0:2.4.23-34.el6_5.1 | | `openldap-clients` | Red Hat:enterprise_linux:6::computenode | All versions | 0:2.4.23-34.el6_5.1 | | `openldap-debuginfo` | Red Hat:enterprise_linux:6::computenode | All versions | 0:2.4.23-34.el6_5.1 | | `openldap-devel` | Red Hat:enterprise_linux:6::computenode | All versions | 0:2.4.23-34.el6_5.1 | | `openldap-servers` | Red Hat:enterprise_linux:6::computenode | All versions | 0:2.4.23-34.el6_5.1 | | `openldap-servers-sql` | Red Hat:enterprise_linux:6::computenode | All versions | 0:2.4.23-34.el6_5.1 | | `openldap` | Red Hat:enterprise_linux:6::server | All versions | 0:2.4.23-34.el6_5.1 | | `openldap-clients` | Red Hat:enterprise_linux:6::server | All versions | 0:2.4.23-34.el6_5.1 | | `openldap-debuginfo` | Red Hat:enterprise_linux:6::server | All versions | 0:2.4.23-34.el6_5.1 | | `openldap-devel` | Red Hat:enterprise_linux:6::server | All versions | 0:2.4.23-34.el6_5.1 | | `openldap-servers` | Red Hat:enterprise_linux:6::server | All versions | 0:2.4.23-34.el6_5.1 | | `openldap-servers-sql` | Red Hat:enterprise_linux:6::server | All versions | 0:2.4.23-34.el6_5.1 | | `openldap` | Red Hat:enterprise_linux:6::workstation | All versions | 0:2.4.23-34.el6_5.1 | | `openldap-clients` | Red Hat:enterprise_linux:6::workstation | All versions | 0:2.4.23-34.el6_5.1 | | `openldap-debuginfo` | Red Hat:enterprise_linux:6::workstation | All versions | 0:2.4.23-34.el6_5.1 | | `openldap-devel` | Red Hat:enterprise_linux:6::workstation | All versions | 0:2.4.23-34.el6_5.1 | Products: Debian Debian Linux, Openldap Openldap. ## How do I fix CVE-2013-4449? Apply the vendor's patch. ## Is CVE-2013-4449 being exploited? There is no known exploitation of CVE-2013-4449 in the wild and no public exploit code. ## Other vulnerabilities in Debian Debian Linux - [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild) - [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild) - [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild) - [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild) - [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2013-4449 and fix it if it is affected. What it is: CVE-2013-4449 is a medium-severity use after free vulnerability in Debian Debian Linux, published on 5 Feb 2014. 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-2013-4449 in the wild and no public exploit code. Affected product: Debian Debian 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-2013-4449/ (Markdown: https://insights.sbomify.com/CVE-2013-4449/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2013-4449 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2013-4449 - OSV: https://osv.dev/vulnerability/CVE-2013-4449 --- From sbomify Insights: https://insights.sbomify.com/CVE-2013-4449/ Summaries are generated and may contain mistakes; the official description above is the record.