# CVE-2024-24783: Verify panics on certificates with an unknown public key algorithm in crypto/x509 > A remote attacker can cause a denial of service by sending a certificate with an unknown public key algorithm to a Go TLS client or server configured to verify client certificates. - **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 5 Mar 2024 - **Updated:** 13 Feb 2025 - **Also known as:** ALSA-2024:6186, ALSA-2024:6187, ALSA-2024:6188, ALSA-2024:6189, ALSA-2024:6195, AZL-37320, AZL-37522, AZL-78968, AZL-98877, BELL-CVE-2024-24783, BIT-golang-2024-24783, DEBIAN-CVE-2024-24783, GHSA-3q2c-pvp5-3cqp, GO-2024-2598, MINI-22q8-cj9p-q2g7, MINI-prw9-86qx-cvq9, MINI-v85f-p45p-wmh8, RHSA-2024:6186, RHSA-2024:6187, RHSA-2024:6188, RHSA-2024:6189, RHSA-2024:6195, UBUNTU-CVE-2024-24783 ## What is CVE-2024-24783? CVE-2024-24783 is a medium-severity vulnerability in Go standard library crypto/x509, published on 5 Mar 2024. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description Verifying a certificate chain which contains a certificate with an unknown public key algorithm will cause Certificate.Verify to panic. This affects all crypto/tls clients, and servers that set Config.ClientAuth to VerifyClientCertIfGiven or RequireAndVerifyClientCert. The default behavior is for TLS servers to not verify client certificates. Weakness: CWE-476 (NULL Pointer Dereference) ## Which versions are affected by CVE-2024-24783? 2 open source packages ship an affected version, including golang and stdlib. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `golang` | Bitnami | All versions | 1.21.8, 1.22.1 | | `stdlib` | Go | All versions | 1.21.8, 1.22.1 | | `buildah` | AlmaLinux:9 | All versions | 2:1.33.7-4.el9_4 | | `buildah-tests` | AlmaLinux:9 | All versions | 2:1.33.7-4.el9_4 | | `containernetworking-plugins` | AlmaLinux:9 | All versions | 1:1.4.0-5.el9_4 | | `gvisor-tap-vsock` | AlmaLinux:9 | All versions | 6:0.7.3-5.el9_4.alma.1 | | `runc` | AlmaLinux:9 | All versions | 4:1.1.12-4.el9_4 | | `skopeo` | AlmaLinux:9 | All versions | 2:1.14.5-1.el9_4 | | `skopeo-tests` | AlmaLinux:9 | All versions | 2:1.14.5-1.el9_4 | | `buildah` | Red Hat:enterprise_linux:9::appstream | All versions | 2:1.33.7-4.el9_4 | | `buildah-debuginfo` | Red Hat:enterprise_linux:9::appstream | All versions | 2:1.33.7-4.el9_4 | | `buildah-debugsource` | Red Hat:enterprise_linux:9::appstream | All versions | 2:1.33.7-4.el9_4 | | `buildah-tests` | Red Hat:enterprise_linux:9::appstream | All versions | 2:1.33.7-4.el9_4 | | `buildah-tests-debuginfo` | Red Hat:enterprise_linux:9::appstream | All versions | 2:1.33.7-4.el9_4 | | `containernetworking-plugins` | Red Hat:enterprise_linux:9::appstream | All versions | 1:1.4.0-5.el9_4 | | `containernetworking-plugins-debuginfo` | Red Hat:enterprise_linux:9::appstream | All versions | 1:1.4.0-5.el9_4 | | `containernetworking-plugins-debugsource` | Red Hat:enterprise_linux:9::appstream | All versions | 1:1.4.0-5.el9_4 | | `gvisor-tap-vsock` | Red Hat:enterprise_linux:9::appstream | All versions | 6:0.7.3-5.el9_4 | | `gvisor-tap-vsock-debuginfo` | Red Hat:enterprise_linux:9::appstream | All versions | 6:0.7.3-5.el9_4 | | `gvisor-tap-vsock-debugsource` | Red Hat:enterprise_linux:9::appstream | All versions | 6:0.7.3-5.el9_4 | | `runc` | Red Hat:enterprise_linux:9::appstream | All versions | 4:1.1.12-4.el9_4 | | `runc-debuginfo` | Red Hat:enterprise_linux:9::appstream | All versions | 4:1.1.12-4.el9_4 | | `runc-debugsource` | Red Hat:enterprise_linux:9::appstream | All versions | 4:1.1.12-4.el9_4 | | `skopeo` | Red Hat:enterprise_linux:9::appstream | All versions | 2:1.14.5-1.el9_4 | | `skopeo-debuginfo` | Red Hat:enterprise_linux:9::appstream | All versions | 2:1.14.5-1.el9_4 | | `skopeo-debugsource` | Red Hat:enterprise_linux:9::appstream | All versions | 2:1.14.5-1.el9_4 | | `skopeo-tests` | Red Hat:enterprise_linux:9::appstream | All versions | 2:1.14.5-1.el9_4 | ## How do I fix CVE-2024-24783? Upgrade golang to a fixed version for your release line: 1.21.8 or 1.22.1. ## Is CVE-2024-24783 being exploited? There is no known exploitation of CVE-2024-24783 in the wild and no public exploit code. ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2024-24783 and fix it if it is affected. What it is: CVE-2024-24783 is a medium-severity vulnerability in Go standard library crypto/x509, published on 5 Mar 2024. 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-2024-24783 in the wild and no public exploit code. Affected packages and fixed versions: - golang (Bitnami): affected all versions; fixed in 1.21.8, 1.22.1 - stdlib (Go): affected all versions; fixed in 1.21.8, 1.22.1 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-2024-24783/ (Markdown: https://insights.sbomify.com/CVE-2024-24783/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2024-24783 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-24783 - OSV: https://osv.dev/vulnerability/CVE-2024-24783 --- From sbomify Insights: https://insights.sbomify.com/CVE-2024-24783/ Summaries are generated and may contain mistakes; the official description above is the record.