{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2017-20205 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2017-20205 yet. Limit exposure of the affected software until one is available.","what":"CVE-2017-20205 is a critical memory corruption vulnerability in Valve Software Source SDK (source-sdk-2013), published on 15 Oct 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-2017-20205 and fix it if it is affected.\n\nWhat it is: CVE-2017-20205 is a critical memory corruption vulnerability in Valve Software Source SDK (source-sdk-2013), published on 15 Oct 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-2017-20205 in the wild and no public exploit code.\n\nAffected product: Valve Software Source SDK (source-sdk-2013). No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2017-20205/ (Markdown: https://insights.sbomify.com/CVE-2017-20205/index.md)","id":"CVE-2017-20205","markdown":"https://insights.sbomify.com/CVE-2017-20205/index.md","name":"CVE-2017-20205","record":{"aliases":["GHSA-g2mq-5mgx-wg6w"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Valve Source SDK","requires_auth":"none","summary":"Remote attackers can execute arbitrary code on clients or servers by sending a crafted ragdoll model that triggers a stack-based buffer overflow in the Source SDK.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":9.2,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-121","name":"Stack-based Buffer Overflow"}],"description":"Valve's Source SDK (source-sdk-2013)'s ragdoll model parsing logic contains a stack-based buffer overflow vulnerability.The tokenizer function `nexttoken` copies characters from an input string into a fixed-size stack buffer without performing bounds checks. When `ParseKeyValue` processes a collisionpair rule longer than the destination buffer (256 bytes), an overflow of the stack buffer `szToken` can occur and overwrite the function return address. A remote attacker can trigger the vulnerable code by supplying a specially crafted ragdoll model which causes the oversized collisionpair rule to be parsed, resulting in remote code execution on affected clients or servers. Valve has addressed this issue in many of their Source games, but independently-developed games must manually apply patch.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Valve Source SDK Stack-Based Buffer Overflow RCE","id":"CVE-2017-20205","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2017"},"n_packages":0,"n_references":3,"next":{"headline":"Appointments \u003c= 2.2.1 - Unauthenticated PHP Object Injection","id":"CVE-2017-20206"},"packages":[],"prev":{"headline":"DBLTek GoIP Telnet Admin Interface Undocumented Backdoor","id":"CVE-2017-20204"},"products":["Source SDK (source-sdk-2013)"],"published":"2025-10-15","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"total"},"state":"PUBLISHED","updated":"2025-11-21","vendors":["Valve Software"]},"summary":"Remote attackers can execute arbitrary code on clients or servers by sending a crafted ragdoll model that triggers a stack-based buffer overflow in the Source SDK.","url":"https://insights.sbomify.com/CVE-2017-20205/"}