{"answers":{"affected":"3 open source packages ship an affected version, including github.com/ctfer-io/chall-manager. It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-53634 in the wild and no public exploit code.","fix":"Upgrade github.com/ctfer-io/chall-manager to 0.1.4 or later.","what":"CVE-2025-53634 is a high-severity denial of service vulnerability in ctfer-io chall-manager, published on 10 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-53634 and fix it if it is affected.\n\nWhat it is: CVE-2025-53634 is a high-severity denial of service vulnerability in ctfer-io chall-manager, published on 10 Jul 2025. 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-2025-53634 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/ctfer-io/chall-manager (Go): affected all versions; fixed in 0.1.4\n- github.com/ctfer-io/chall-manager (Go): affected all versions; fixed in 0.1.4\n- github.com/ctfer-io/chall-manager (Go): affected all versions; fixed in 0.1.4\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-2025-53634/ (Markdown: https://insights.sbomify.com/CVE-2025-53634/index.md)","id":"CVE-2025-53634","markdown":"https://insights.sbomify.com/CVE-2025-53634/index.md","name":"CVE-2025-53634","record":{"aliases":["GHSA-ggmv-j932-q89q","GO-2025-3809"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"CTF challenge manager","requires_auth":"none","summary":"An attacker can cause a Denial of Service via Slowloris attacks against Chall-Manager's HTTP Gateway due to missing header timeouts.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"chall-manager","vendor":"ctfer-io"}],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"Chall-Manager is a platform-agnostic system able to start Challenges on Demand of a player. The HTTP Gateway processes headers, but with no timeout set. With a slow loris attack, an attacker could cause Denial of Service (DoS). Exploitation does not require authentication nor authorization, so anyone can exploit it. It should nonetheless not be exploitable as it is highly recommended to bury Chall-Manager deep within the infrastructure due to its large capabilities, so no users could reach the system. Patch has been implemented by commit 1385bd8 and shipped in v0.1.4.","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":"Chall-Manager's HTTP Gateway have no header check timeout leading to potential slow loris attacks","id":"CVE-2025-53634","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"denial_of_service","year":"2025"},"n_packages":3,"n_references":3,"next":{"headline":"Open OnDemand Shell App closed websocket DoS","id":"CVE-2025-53636"},"packages":[{"ecosystem":"Go","fixed":["0.1.4"],"introduced":["0"],"last_affected":[],"package":"github.com/ctfer-io/chall-manager","purl":null,"source":"GHSA-ggmv-j932-q89q"},{"ecosystem":"Go","fixed":["0.1.4"],"introduced":["0"],"last_affected":[],"package":"github.com/ctfer-io/chall-manager","purl":"pkg:golang/github.com/ctfer-io/chall-manager","source":"GHSA-ggmv-j932-q89q"},{"ecosystem":"Go","fixed":["0.1.4"],"introduced":["0"],"last_affected":[],"package":"github.com/ctfer-io/chall-manager","purl":"pkg:golang/github.com/ctfer-io/chall-manager","source":"GO-2025-3809"}],"prev":{"headline":"Chall-Manager's scenario decoding process does not check for zip bombs","id":"CVE-2025-53633"},"products":["chall-manager"],"published":"2025-07-10","related":[{"cvss_score":8.8,"headline":"Chall-Manager's scenario decoding process does not check for zip slips","id":"CVE-2025-53632","kev_date_added":null,"published":"2025-07-10"},{"cvss_score":8.7,"headline":"Chall-Manager's scenario decoding process does not check for zip bombs","id":"CVE-2025-53633","kev_date_added":null,"published":"2025-07-10"},{"cvss_score":7.9,"headline":"Chall-Manager's invalid NetworkPolicy enables a malicious actor to pivot into another namespace","id":"CVE-2026-32768","kev_date_added":null,"published":"2026-03-20"}],"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-07-10","vendors":["ctfer-io"]},"summary":"An attacker can cause a Denial of Service via Slowloris attacks against Chall-Manager's HTTP Gateway due to missing header timeouts.","url":"https://insights.sbomify.com/CVE-2025-53634/"}