# CVE-2017-12652: Denial of service in n/a > An attacker can cause a denial of service by providing a crafted PNG file that bypasses chunk length checks in libpng. - **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 10 Jul 2019 - **Updated:** 9 Jun 2025 - **Also known as:** AZL-43468, AZL-43573, AZL-44469, AZL-44973, AZL-45045, AZL-45102, DEBIAN-CVE-2017-12652, GHSA-94xg-qm4r-9r7c, RHSA-2020:3901, SUSE-SU-2020:0911-1, SUSE-SU-2023:3799-1, UBUNTU-CVE-2017-12652 ## What is CVE-2017-12652? CVE-2017-12652 is a critical denial of service vulnerability in Libpng Libpng, published on 10 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description libpng before 1.6.32 does not properly check the length of chunks against the user limit. Weakness: CWE-20 (Improper Input Validation) ## Which versions are affected by CVE-2017-12652? It affects 2 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `libpng` | Red Hat:enterprise_linux:7::client | All versions | 2:1.5.13-8.el7 | | `libpng-debuginfo` | Red Hat:enterprise_linux:7::client | All versions | 2:1.5.13-8.el7 | | `libpng-devel` | Red Hat:enterprise_linux:7::client | All versions | 2:1.5.13-8.el7 | | `libpng-static` | Red Hat:enterprise_linux:7::client | All versions | 2:1.5.13-8.el7 | | `libpng` | Red Hat:enterprise_linux:7::computenode | All versions | 2:1.5.13-8.el7 | | `libpng-debuginfo` | Red Hat:enterprise_linux:7::computenode | All versions | 2:1.5.13-8.el7 | | `libpng-devel` | Red Hat:enterprise_linux:7::computenode | All versions | 2:1.5.13-8.el7 | | `libpng-static` | Red Hat:enterprise_linux:7::computenode | All versions | 2:1.5.13-8.el7 | | `libpng` | Red Hat:enterprise_linux:7::server | All versions | 2:1.5.13-8.el7 | | `libpng-debuginfo` | Red Hat:enterprise_linux:7::server | All versions | 2:1.5.13-8.el7 | | `libpng-devel` | Red Hat:enterprise_linux:7::server | All versions | 2:1.5.13-8.el7 | | `libpng-static` | Red Hat:enterprise_linux:7::server | All versions | 2:1.5.13-8.el7 | | `libpng` | Red Hat:enterprise_linux:7::workstation | All versions | 2:1.5.13-8.el7 | | `libpng-debuginfo` | Red Hat:enterprise_linux:7::workstation | All versions | 2:1.5.13-8.el7 | | `libpng-devel` | Red Hat:enterprise_linux:7::workstation | All versions | 2:1.5.13-8.el7 | | `libpng-static` | Red Hat:enterprise_linux:7::workstation | All versions | 2:1.5.13-8.el7 | | `libpng12` | SUSE:Linux Enterprise Server 12 SP4 | All versions | 1.2.50-20.3.2 | | `libpng12` | SUSE:Linux Enterprise Server 12 SP5 | All versions | 1.2.50-20.3.2 | | `libpng15` | SUSE:Linux Enterprise Server 12 SP5 | All versions | 1.5.22-10.4.1 | | `libpng12` | SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 1.2.50-20.3.2 | | `libpng12` | SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 1.2.50-20.3.2 | | `libpng15` | SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 1.5.22-10.4.1 | | `libpng12` | SUSE:Linux Enterprise Software Development Kit 12 SP4 | All versions | 1.2.50-20.3.2 | | `libpng12` | SUSE:Linux Enterprise Software Development Kit 12 SP5 | All versions | 1.2.50-20.3.2 | Products: Libpng Libpng, Netapp Active Iq Unified Manager. ## How do I fix CVE-2017-12652? Upgrade to a fixed version. ## Is CVE-2017-12652 being exploited? There is no known exploitation of CVE-2017-12652 in the wild and no public exploit code. ## Other vulnerabilities in Libpng Libpng - [CVE-2018-14550](https://insights.sbomify.com/CVE-2018-14550/): Out-of-bounds write in libpng (high 8.8) - [CVE-2026-25646](https://insights.sbomify.com/CVE-2026-25646/): LIBPNG has a heap buffer overflow in png_set_quantize (high 8.3) - [CVE-2026-33636](https://insights.sbomify.com/CVE-2026-33636/): LIBPNG has ARM NEON Palette Expansion Out-of-Bounds Read on AArch64 (high 7.6) - [CVE-2026-33416](https://insights.sbomify.com/CVE-2026-33416/): LIBPNG has use-after-free via pointer aliasing in `png_set_tRNS` and `png_set_PLTE` (high 7.5) - [CVE-2016-10087](https://insights.sbomify.com/CVE-2016-10087/): Null dereference in n/a (high 7.5) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2017-12652 and fix it if it is affected. What it is: CVE-2017-12652 is a critical denial of service vulnerability in Libpng Libpng, published on 10 Jul 2019. 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-2017-12652 in the wild and no public exploit code. Affected product: Libpng Libpng. 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-2017-12652/ (Markdown: https://insights.sbomify.com/CVE-2017-12652/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2017-12652 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-12652 - OSV: https://osv.dev/vulnerability/CVE-2017-12652 --- From sbomify Insights: https://insights.sbomify.com/CVE-2017-12652/ Summaries are generated and may contain mistakes; the official description above is the record.