{"answers":{"affected":"2 open source packages ship an affected version, including org.redisson:redisson. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-42809 exists.","fix":"Upgrade org.redisson:redisson to 3.22.0 or later.","what":"CVE-2023-42809 is a critical unsafe deserialization vulnerability in redisson, published on 4 Oct 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2023-42809 and fix it if it is affected.\n\nWhat it is: CVE-2023-42809 is a critical unsafe deserialization vulnerability in redisson, published on 4 Oct 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-42809 exists.\n\nAffected packages and fixed versions:\n- org.redisson:redisson (Maven): affected all versions; fixed in 3.22.0\n- org.redisson:redisson (Maven): affected all versions; fixed in 3.22.0\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-2023-42809/ (Markdown: https://insights.sbomify.com/CVE-2023-42809/index.md)","id":"CVE-2023-42809","markdown":"https://insights.sbomify.com/CVE-2023-42809/index.md","name":"CVE-2023-42809","record":{"aliases":["GHSA-4hvc-qwr2-f8rv"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Java Redis client","requires_auth":"none","summary":"Attackers can execute arbitrary code on client machines by tricking them into connecting to a malicious Redis server that sends crafted serialized objects.","user_interaction":"required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"redisson","vendor":"redisson"}],"cvss":{"score":9.7,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"description":"Redisson is a Java Redis client that uses the Netty framework. Prior to version 3.22.0, some of the messages received from the Redis server contain Java objects that the client deserializes without further validation. Attackers that manage to trick clients into communicating with a malicious server can include especially crafted objects in its responses that, once deserialized by the client, force it to execute arbitrary code. This can be abused to take control of the machine the client is running in. Version 3.22.0 contains a patch for this issue.\n\nSome post-fix advice is available. Do NOT use `Kryo5Codec` as deserialization codec, as it is still vulnerable to arbitrary object deserialization due to the `setRegistrationRequired(false)` call. On the contrary, `KryoCodec` is safe to use. The fix applied to `SerializationCodec` only consists of adding an optional allowlist of class names, even though making this behavior the default is recommended. When instantiating `SerializationCodec` please use the `SerializationCodec(ClassLoader classLoader, Set\u003cString\u003e allowedClasses)` constructor to restrict the allowed classes for deserialization.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Redisson unsafe deserialization vulnerability","id":"CVE-2023-42809","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"deserialization","year":"2023"},"n_packages":2,"n_references":2,"next":{"headline":"systeminformation SSID Command Injection Vulnerability","id":"CVE-2023-42810"},"packages":[{"ecosystem":"Maven","fixed":["3.22.0"],"introduced":["0"],"last_affected":[],"package":"org.redisson:redisson","purl":null,"source":"GHSA-4hvc-qwr2-f8rv"},{"ecosystem":"Maven","fixed":["3.22.0"],"introduced":["0"],"last_affected":[],"package":"org.redisson:redisson","purl":"pkg:maven/org.redisson/redisson","source":"GHSA-4hvc-qwr2-f8rv"}],"prev":{"headline":"Common Voice Cross-site Scripting vulnerability","id":"CVE-2023-42808"},"products":["redisson"],"published":"2023-10-04","related":[],"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":"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":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2024-09-19","vendors":["redisson"]},"summary":"Attackers can execute arbitrary code on client machines by tricking them into connecting to a malicious Redis server that sends crafted serialized objects.","url":"https://insights.sbomify.com/CVE-2023-42809/"}