# CVE-2015-5292: Denial of service in n/a > Remote authenticated users can cause a denial of service via memory exhaustion in SSSD by triggering PAC blob parsing during Kerberos authentication. - **Severity:** Medium 6.8 (`AV:N/AC:L/Au:S/C:N/I:N/A:C`) - **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:** 29 Oct 2015 - **Updated:** 6 Aug 2024 - **Also known as:** DEBIAN-CVE-2015-5292, GHSA-5f57-m892-gf57, RHSA-2015:2019, RHSA-2015:2355 ## What is CVE-2015-5292? CVE-2015-5292 is a medium-severity denial of service vulnerability in n/a, published on 29 Oct 2015. Any signed-in user can exploit it over the network, with no action from the victim. ### Official description Memory leak in the Privilege Attribute Certificate (PAC) responder plugin (sssd_pac_plugin.so) in System Security Services Daemon (SSSD) 1.10 before 1.13.1 allows remote authenticated users to cause a denial of service (memory consumption) via a large number of logins that trigger parsing of PAC blobs during Kerberos authentication. Weakness: CWE-399 ## Which versions are affected by CVE-2015-5292? It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `libipa_hbac` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `libipa_hbac-devel` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `libipa_hbac-python` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `libsss_idmap` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `libsss_idmap-devel` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `libsss_nss_idmap` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `libsss_nss_idmap-devel` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `libsss_nss_idmap-python` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `libsss_simpleifp` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `libsss_simpleifp-devel` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `python-sssdconfig` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `sssd` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `sssd-ad` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `sssd-client` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `sssd-common` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `sssd-common-pac` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `sssd-dbus` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `sssd-debuginfo` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `sssd-ipa` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `sssd-krb5` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `sssd-krb5-common` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `sssd-ldap` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `sssd-proxy` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `sssd-tools` | Red Hat:enterprise_linux:6::client | All versions | 0:1.12.4-47.el6_7.4 | | `libipa_hbac` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.12.4-47.el6_7.4 | | `libipa_hbac-devel` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.12.4-47.el6_7.4 | | `libipa_hbac-python` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.12.4-47.el6_7.4 | | `libsss_idmap` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.12.4-47.el6_7.4 | | `libsss_idmap-devel` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.12.4-47.el6_7.4 | | `libsss_nss_idmap` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.12.4-47.el6_7.4 | | `libsss_nss_idmap-devel` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.12.4-47.el6_7.4 | | `libsss_nss_idmap-python` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.12.4-47.el6_7.4 | | `libsss_simpleifp` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.12.4-47.el6_7.4 | | `libsss_simpleifp-devel` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.12.4-47.el6_7.4 | | `python-sssdconfig` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.12.4-47.el6_7.4 | | `sssd` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.12.4-47.el6_7.4 | | `sssd-ad` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.12.4-47.el6_7.4 | | `sssd-client` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.12.4-47.el6_7.4 | | `sssd-common` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.12.4-47.el6_7.4 | | `sssd-common-pac` | Red Hat:enterprise_linux:6::computenode | All versions | 0:1.12.4-47.el6_7.4 | Products: Fedoraproject Sssd. ## How do I fix CVE-2015-5292? Upgrade to a fixed version. ## Is CVE-2015-5292 being exploited? There is no known exploitation of CVE-2015-5292 in the wild and no public exploit code. ## Other vulnerabilities in n/a - [CVE-2022-4254](https://insights.sbomify.com/CVE-2022-4254/): Other in SSSD (high 8.8) - [CVE-2012-3462](https://insights.sbomify.com/CVE-2012-3462/): Auth bypass in sssd (high 8.8) - [CVE-2026-104048](https://insights.sbomify.com/CVE-2026-104048/): Sssd: sssd: authorization bypass via cross-domain username collision in hbac evaluation (medium 6.8) - [CVE-2026-12610](https://insights.sbomify.com/CVE-2026-12610/): Sssd: use-after-free crash in sssd' 'sssd_pam' process (medium 6.4) - [CVE-2026-104046](https://insights.sbomify.com/CVE-2026-104046/): Sssd: sssd: denial of service via incomplete identity provider authentication requests (medium 6.2) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2015-5292 and fix it if it is affected. What it is: CVE-2015-5292 is a medium-severity denial of service vulnerability in n/a, published on 29 Oct 2015. Any signed-in user can exploit it over the network, with no action from the victim. Exploitation: There is no known exploitation of CVE-2015-5292 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-2015-5292/ (Markdown: https://insights.sbomify.com/CVE-2015-5292/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2015-5292 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-5292 - OSV: https://osv.dev/vulnerability/CVE-2015-5292 --- From sbomify Insights: https://insights.sbomify.com/CVE-2015-5292/ Summaries are generated and may contain mistakes; the official description above is the record.