# CVE-2017-2668: Null dereference in 389-ds-base > A remote unauthenticated attacker can crash the 389-ds-base LDAP server by sending a specially crafted bind request, causing a denial of service. - **Severity:** Medium 6.5 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Any signed-in user - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 22 Jun 2018 - **Updated:** 5 Aug 2024 - **Also known as:** DEBIAN-CVE-2017-2668, GHSA-8xf9-83fh-q7rf, MGASA-2017-0123, RHSA-2017:0893, RHSA-2017:0920, UBUNTU-CVE-2017-2668 ## What is CVE-2017-2668? CVE-2017-2668 is a medium-severity vulnerability in Redhat Enterprise Linux Desktop, published on 22 Jun 2018. Any signed-in user can exploit it over the network, with no action from the victim. ### Official description 389-ds-base before versions 1.3.5.17 and 1.3.6.10 is vulnerable to an invalid pointer dereference in the way LDAP bind requests are handled. A remote unauthenticated attacker could use this flaw to make ns-slapd crash via a specially crafted LDAP bind request, resulting in denial of service. Weakness: CWE-476 (NULL Pointer Dereference), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) ## Which versions are affected by CVE-2017-2668? It affects 4 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `389-ds-base` | Red Hat:enterprise_linux:6::client | All versions | 0:1.2.11.15-91.el6_9 | | `389-ds-base-debuginfo` | Red Hat:enterprise_linux:6::client | All versions | 0:1.2.11.15-91.el6_9 | | `389-ds-base-devel` | Red Hat:enterprise_linux:6::client | All versions | 0:1.2.11.15-91.el6_9 | | `389-ds-base-libs` | Red Hat:enterprise_linux:6::client | All versions | 0:1.2.11.15-91.el6_9 | | `389-ds-base` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.2.11.15-91.el6_9 | | `389-ds-base-debuginfo` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.2.11.15-91.el6_9 | | `389-ds-base-devel` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.2.11.15-91.el6_9 | | `389-ds-base-libs` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.2.11.15-91.el6_9 | | `389-ds-base` | Red Hat:enterprise_linux:6::server | All versions | 0:1.2.11.15-91.el6_9 | | `389-ds-base-debuginfo` | Red Hat:enterprise_linux:6::server | All versions | 0:1.2.11.15-91.el6_9 | | `389-ds-base-devel` | Red Hat:enterprise_linux:6::server | All versions | 0:1.2.11.15-91.el6_9 | | `389-ds-base-libs` | Red Hat:enterprise_linux:6::server | All versions | 0:1.2.11.15-91.el6_9 | | `389-ds-base` | Red Hat:enterprise_linux:6::workstation | All versions | 0:1.2.11.15-91.el6_9 | | `389-ds-base-debuginfo` | Red Hat:enterprise_linux:6::workstation | All versions | 0:1.2.11.15-91.el6_9 | | `389-ds-base-devel` | Red Hat:enterprise_linux:6::workstation | All versions | 0:1.2.11.15-91.el6_9 | | `389-ds-base-libs` | Red Hat:enterprise_linux:6::workstation | All versions | 0:1.2.11.15-91.el6_9 | | `389-ds-base` | Red Hat:enterprise_linux:7::client | All versions | 0:1.3.5.10-20.el7_3 | | `389-ds-base-debuginfo` | Red Hat:enterprise_linux:7::client | All versions | 0:1.3.5.10-20.el7_3 | | `389-ds-base-devel` | Red Hat:enterprise_linux:7::client | All versions | 0:1.3.5.10-20.el7_3 | | `389-ds-base-libs` | Red Hat:enterprise_linux:7::client | All versions | 0:1.3.5.10-20.el7_3 | | `389-ds-base-snmp` | Red Hat:enterprise_linux:7::client | All versions | 0:1.3.5.10-20.el7_3 | | `389-ds-base` | Red Hat:enterprise_linux:7::computenode | All versions | 0:1.3.5.10-20.el7_3 | | `389-ds-base-debuginfo` | Red Hat:enterprise_linux:7::computenode | All versions | 0:1.3.5.10-20.el7_3 | | `389-ds-base-devel` | Red Hat:enterprise_linux:7::computenode | All versions | 0:1.3.5.10-20.el7_3 | | `389-ds-base-libs` | Red Hat:enterprise_linux:7::computenode | All versions | 0:1.3.5.10-20.el7_3 | | `389-ds-base-snmp` | Red Hat:enterprise_linux:7::computenode | All versions | 0:1.3.5.10-20.el7_3 | | `389-ds-base` | Red Hat:enterprise_linux:7::server | All versions | 0:1.3.5.10-20.el7_3 | | `389-ds-base-debuginfo` | Red Hat:enterprise_linux:7::server | All versions | 0:1.3.5.10-20.el7_3 | | `389-ds-base-devel` | Red Hat:enterprise_linux:7::server | All versions | 0:1.3.5.10-20.el7_3 | | `389-ds-base-libs` | Red Hat:enterprise_linux:7::server | All versions | 0:1.3.5.10-20.el7_3 | | `389-ds-base-snmp` | Red Hat:enterprise_linux:7::server | All versions | 0:1.3.5.10-20.el7_3 | | `389-ds-base` | Red Hat:enterprise_linux:7::workstation | All versions | 0:1.3.5.10-20.el7_3 | | `389-ds-base-debuginfo` | Red Hat:enterprise_linux:7::workstation | All versions | 0:1.3.5.10-20.el7_3 | | `389-ds-base-devel` | Red Hat:enterprise_linux:7::workstation | All versions | 0:1.3.5.10-20.el7_3 | | `389-ds-base-libs` | Red Hat:enterprise_linux:7::workstation | All versions | 0:1.3.5.10-20.el7_3 | | `389-ds-base-snmp` | Red Hat:enterprise_linux:7::workstation | All versions | 0:1.3.5.10-20.el7_3 | Products: Fedoraproject 389 Directory Server, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Workstation. ## How do I fix CVE-2017-2668? Apply the vendor's patch. ## Is CVE-2017-2668 being exploited? There is no known exploitation of CVE-2017-2668 in the wild and no public exploit code. ## Other vulnerabilities in Redhat Enterprise Linux Desktop - [CVE-2017-7551](https://insights.sbomify.com/CVE-2017-7551/): Information disclosure in 389-ds-base (critical 9.8) - [CVE-2017-15135](https://insights.sbomify.com/CVE-2017-15135/): Auth bypass in 389-ds-base (high 8.1) - [CVE-2019-10171](https://insights.sbomify.com/CVE-2019-10171/): Denial of service in 389-ds-base (high 7.5) - [CVE-2018-14638](https://insights.sbomify.com/CVE-2018-14638/): Denial of service in 389-ds-base (high 7.5) - [CVE-2018-1054](https://insights.sbomify.com/CVE-2018-1054/): Denial of service in 389-ds-base (high 7.5) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2017-2668 and fix it if it is affected. What it is: CVE-2017-2668 is a medium-severity vulnerability in Redhat Enterprise Linux Desktop, published on 22 Jun 2018. Any signed-in user can exploit it over the network, with no action from the victim. Exploitation: There is no known exploitation of CVE-2017-2668 in the wild and no public exploit code. Affected product: Redhat Enterprise Linux Desktop. 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-2017-2668/ (Markdown: https://insights.sbomify.com/CVE-2017-2668/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2017-2668 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-2668 - OSV: https://osv.dev/vulnerability/CVE-2017-2668 --- From sbomify Insights: https://insights.sbomify.com/CVE-2017-2668/ Summaries are generated and may contain mistakes; the official description above is the record.