{"answers":{"affected":"5 open source packages ship an affected version, including github.com/projectcapsule/capsule-proxy and github.com/clastix/capsule-proxy. It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-48312 in the wild and no public exploit code.","fix":"Upgrade github.com/projectcapsule/capsule-proxy to 0.4.6 or later.","what":"CVE-2023-48312 is a critical authentication bypass vulnerability in projectcapsule capsule-proxy, published on 24 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-48312 and fix it if it is affected.\n\nWhat it is: CVE-2023-48312 is a critical authentication bypass vulnerability in projectcapsule capsule-proxy, published on 24 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-48312 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/projectcapsule/capsule-proxy (Go): affected all versions; fixed in 0.4.6\n- github.com/projectcapsule/capsule-proxy (Go): affected all versions; fixed in 0.4.6\n- github.com/projectcapsule/capsule-proxy (Go): affected all versions; fixed in 0.4.6\n- github.com/clastix/capsule-proxy (Go): affected all versions; fixed in 0.4.6\n- github.com/clastix/capsule-proxy (Go): affected all versions; fixed in 0.4.6\n\nTask:\n1. 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.\n2. 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.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2023-48312/ (Markdown: https://insights.sbomify.com/CVE-2023-48312/index.md)","id":"CVE-2023-48312","markdown":"https://insights.sbomify.com/CVE-2023-48312/index.md","name":"CVE-2023-48312","record":{"aliases":["GHSA-fpvw-6m5v-hqfp","GO-2023-2351"],"analysis":{"component_type":"container_or_infrastructure","fix_type":"upgrade","impacts":["privilege_escalation","security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Kubernetes reverse proxy","requires_auth":"none","summary":"Attackers can bypass authentication in capsule-proxy when anonymous-auth is disabled, leading to privilege escalation against the Kubernetes API.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"capsule-proxy","vendor":"clastix"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"capsule-proxy is a reverse proxy for the capsule operator project. Affected versions are subject to a privilege escalation vulnerability which is based on a missing check if the user is authenticated based on the `TokenReview` result. All the clusters running with the `anonymous-auth` Kubernetes API Server setting disable (set to `false`) are affected since it would be possible to bypass the token review mechanism, interacting with the upper Kubernetes API Server. This privilege escalation cannot be exploited if you're relying only on client certificates (SSL/TLS). This vulnerability has been addressed in version 0.4.6. Users are advised to upgrade.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Authentication bypass using an empty token in capsule-proxy","id":"CVE-2023-48312","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"auth_bypass","year":"2023"},"n_packages":5,"n_references":2,"next":{"headline":"Umbraco contains a DOM-XSS","id":"CVE-2023-48313"},"packages":[{"ecosystem":"Go","fixed":["0.4.6"],"introduced":["0"],"last_affected":[],"package":"github.com/clastix/capsule-proxy","purl":null,"source":"GHSA-fpvw-6m5v-hqfp"},{"ecosystem":"Go","fixed":["0.4.6"],"introduced":["0"],"last_affected":[],"package":"github.com/clastix/capsule-proxy","purl":"pkg:golang/github.com/clastix/capsule-proxy","source":"GHSA-fpvw-6m5v-hqfp"},{"ecosystem":"Go","fixed":["0.4.6"],"introduced":["0"],"last_affected":[],"package":"github.com/projectcapsule/capsule-proxy","purl":null,"source":"GHSA-fpvw-6m5v-hqfp"},{"ecosystem":"Go","fixed":["0.4.6"],"introduced":["0"],"last_affected":[],"package":"github.com/projectcapsule/capsule-proxy","purl":"pkg:golang/github.com/projectcapsule/capsule-proxy","source":"GHSA-fpvw-6m5v-hqfp"},{"ecosystem":"Go","fixed":["0.4.6"],"introduced":["0"],"last_affected":[],"package":"github.com/projectcapsule/capsule-proxy","purl":"pkg:golang/github.com/projectcapsule/capsule-proxy","source":"GO-2023-2351"}],"prev":{"headline":"Any image allowed by default","id":"CVE-2023-48311"},"products":["capsule-proxy"],"published":"2023-11-24","related":[{"cvss_score":8.8,"headline":"Privilege escalation using hop-by-hop Connection header","id":"CVE-2022-23652","kev_date_added":null,"published":"2022-02-22"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-02","vendors":["projectcapsule"]},"summary":"Attackers can bypass authentication in capsule-proxy when anonymous-auth is disabled, leading to privilege escalation against the Kubernetes API.","url":"https://insights.sbomify.com/CVE-2023-48312/"}