{"answers":{"affected":"3 open source packages ship an affected version, including github.com/aws/aws-sdk-go. It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-8911 in the wild and no public exploit code.","fix":"Upgrade github.com/aws/aws-sdk-go to 1.34.0 or later.","what":"CVE-2020-8911 is a medium-severity vulnerability in Google LLC AWS S3 Crypto SDK for GoLang, published on 11 Aug 2020. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-8911 and fix it if it is affected.\n\nWhat it is: CVE-2020-8911 is a medium-severity vulnerability in Google LLC AWS S3 Crypto SDK for GoLang, published on 11 Aug 2020. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-8911 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/aws/aws-sdk-go (Go): affected all versions; no fix listed\n- github.com/aws/aws-sdk-go (Go): affected all versions; fixed in 1.34.0\n- github.com/aws/aws-sdk-go (Go): affected all versions; fixed in 1.34.0\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-2020-8911/ (Markdown: https://insights.sbomify.com/CVE-2020-8911/index.md)","id":"CVE-2020-8911","markdown":"https://insights.sbomify.com/CVE-2020-8911/index.md","name":"CVE-2020-8911","record":{"aliases":["CLEANSTART-2026-RN39734","GHSA-f5pg-7wfw-84q9","GO-2022-0646","MINI-23mg-2m9c-pxhg","MINI-2447-rhh3-2286","MINI-24mh-x6mf-98jp","MINI-2597-ggfv-95g8","MINI-25rh-gw4h-7qf4","MINI-26f6-c5x5-m9c7","MINI-27wx-m3f2-7g5w","MINI-2867-w889-vgjp","MINI-29qp-6c46-44x4","MINI-2cgq-xw6v-5jxc","MINI-2f8p-wh24-j3q7","MINI-2g9h-84qc-mmwj","MINI-2j4f-9v3j-whj7","MINI-2wvh-v8fr-gxf8","MINI-2xv5-g886-39g8","MINI-2xw8-fp6c-4vgw","MINI-327g-69r9-r665","MINI-338j-x7hr-3jpg","MINI-3455-cr7w-238j","MINI-36cc-3gg5-578g","MINI-3g83-38xw-m2wg","MINI-3mvw-fxf7-3m6m","MINI-3pmx-xjhj-m2pp","MINI-3qcg-957h-xv9w","MINI-3r29-rr7x-wwhm","MINI-3xcm-rfr7-9qwv","MINI-433r-cwc6-qv6m","MINI-493f-5jjf-4v4r","MINI-49v4-3r6x-mj79","MINI-49v8-95h5-35q7","MINI-4cgq-h73w-cg8w","MINI-4cm3-xr5h-4gjc","MINI-4fg6-cf7r-w39m","MINI-4p9p-xgqv-j6pv","MINI-4v4f-gcv6-266j","MINI-4vv9-vw43-fpm8","MINI-4xq5-5r59-8rgc","MINI-4xwf-wg7g-qfhf","MINI-53vm-fq4f-hv64","MINI-54rc-hw79-vrw5","MINI-55hm-qvj4-c35v","MINI-55hp-pggx-28qw","MINI-5777-5928-x79f","MINI-582h-7hww-c24f","MINI-5mg5-9xmr-p2gx","MINI-5w39-qp25-87jq","MINI-5wjc-2cqw-62gw","MINI-5xgq-8whj-cfxx","MINI-5xh3-9h78-xrqh","MINI-5xr6-vm3p-7xmc","MINI-62j8-h5jf-pxj5","MINI-62m9-q4pm-5gv9","MINI-63hv-7223-gc37","MINI-63q8-pp68-6wx9","MINI-6978-j6qw-39f7","MINI-69wq-qpw4-f6gj","MINI-6cm8-xq67-h7qx","MINI-6fv3-4f77-wh63","MINI-6h49-v86m-rh2f","MINI-6mf9-x2g4-96g7","MINI-6mjp-5f43-rphx","MINI-6ppv-rjmr-cfph","MINI-6q94-5qm6-2x89","MINI-6r34-xjh9-64m2","MINI-6vm6-xj4f-9hj3","MINI-748x-m34m-rx6w","MINI-74m2-5g7m-jrvg","MINI-755m-jh6w-6x4f","MINI-755w-pfx9-3xfh","MINI-76p2-fqpp-3g6q","MINI-76xw-xwf9-4j2q","MINI-7868-9fqr-7hq7","MINI-798v-7qvm-3fvm","MINI-7cg5-x24f-pcqq","MINI-7ghr-ff77-9jqq","MINI-7h22-wcgc-jrr2","MINI-7m2w-23f5-2rpq","MINI-7v2q-c524-cxfq","MINI-7x45-v3gq-qqq5","MINI-83jr-p2c2-m467","MINI-8757-xj39-cvp2","MINI-8c6c-378p-rg6x","MINI-8fpx-x9gp-q88m","MINI-8g5r-c6w4-3rjg","MINI-8gq6-9ccf-v285","MINI-8gq6-wx77-j3gr","MINI-8hr9-mcr2-fw9m","MINI-8jrv-84pg-v34v","MINI-8mfv-266f-ff2h","MINI-8p59-wvxh-8v8h","MINI-8p9c-fr3j-wf5q","MINI-8v7r-m7jg-p95r","MINI-8xch-h82w-9q9q","MINI-936g-qr3m-rf4c","MINI-94pg-34hp-7wq3","MINI-96q2-9g84-626x","MINI-97rp-hjw3-fcvj","MINI-98w8-v9f3-f4rp","MINI-9fjf-xpp9-v626","MINI-9g28-9pfp-g3qq","MINI-9gqp-j5g4-35m4","MINI-9jfr-pv84-wr4j","MINI-9jx2-v23w-qm8q","MINI-9r7p-f9rg-jvhg","MINI-9w4j-jvpx-pmgm","MINI-9x9m-8f43-wcm4","MINI-c9f9-5vf7-x4fh","MINI-cc9r-cvxc-5w3v","MINI-cj5j-pppw-8cxq","MINI-cj5q-hfh9-vvp5","MINI-cj94-8635-4x58","MINI-cm5f-cr85-mc4x","MINI-cp3x-f8fq-h8cr","MINI-cqf3-jgx3-jf52","MINI-f5g5-ppx5-8mg4","MINI-f62r-r4r4-xpqv","MINI-f6w7-5fj7-4x45","MINI-ff7q-rg5c-42ph","MINI-fj2h-8cmc-8fvj","MINI-fjvw-vqcx-mw25","MINI-fm3h-8q54-fx46","MINI-fvx2-m6wp-fjw7","MINI-fw39-rjcj-56mg","MINI-fwc9-hxfh-v8h4","MINI-fxcq-wvxf-m6vq","MINI-g2cg-jxgf-9j2q","MINI-g578-x2q8-8xxq","MINI-g6pg-3mj7-ghmc","MINI-g7gj-2799-fv5x","MINI-g7x6-rcr4-29rf","MINI-g9m7-x22p-m8h4","MINI-g9r5-qcr2-4977","MINI-gfpw-57xh-9r9h","MINI-ggc7-hc99-q5m2","MINI-ggq8-mm5m-h3x8","MINI-gm48-hr4x-fgc2","MINI-gmj8-gqpm-346g","MINI-grch-2v5c-554m","MINI-gvw5-cggp-556p","MINI-gw7q-mrgx-p5w4","MINI-gwpg-593j-287m","MINI-h3j2-59g3-jc23","MINI-h4jj-j33v-jvvp","MINI-h566-mfvj-wcc5","MINI-h5gq-v259-c3q8","MINI-hc8w-p645-pv9f","MINI-hhpg-p4rh-74mw","MINI-hhxr-wxwf-wr5m","MINI-hmg8-4gjh-6h6w","MINI-hrhr-2j79-hhx2","MINI-hv4m-jrcp-mp3c","MINI-hw4r-6g7f-ccpj","MINI-hxjv-5v38-m2c2","MINI-j3q7-w9rr-j4cm","MINI-j4c3-hpcf-wpwx","MINI-j76g-j6x2-v7rf","MINI-j7fm-5pgq-wg9v","MINI-j847-85m2-wcg3","MINI-j8jh-344w-xxqw","MINI-j9m5-jx4f-cvqg","MINI-jg2p-2cg7-57vp","MINI-jgh6-c5gx-wgc4","MINI-jh49-f4qp-fq3p","MINI-jj5v-mx52-6q44","MINI-jmpj-8898-hj9c","MINI-jq5q-cjf3-pmpg","MINI-jvrr-8g3p-jgj4","MINI-m5gw-p5c8-6qj9","MINI-m85g-5x6x-3hp6","MINI-m9gr-gw5f-fhgw","MINI-mc2x-3445-vr45","MINI-mc3m-3hpc-c2jm","MINI-mc4h-chq2-jjgv","MINI-mc7v-p52g-pm6x","MINI-mf3c-35j4-7xw4","MINI-mg65-v73p-53jj","MINI-mp68-fh2p-3fhp","MINI-mw8f-f878-5mff","MINI-p3cw-rrfp-rrv6","MINI-p79j-32px-qqhr","MINI-pc69-54fp-rw55","MINI-pfm3-r545-66wc","MINI-pfp7-5c76-xf5f","MINI-phhp-rpf4-m8w4","MINI-pjp5-46hf-7wpg","MINI-ppff-wm83-8g24","MINI-pq95-crqx-m6w8","MINI-q279-hm36-9xph","MINI-q2w3-56gx-4xw6","MINI-q3h6-5vq6-r595","MINI-q3w5-85cv-gh77","MINI-q479-fc9c-8pp8","MINI-q6hh-qm9h-g8j6","MINI-q9hm-hh44-jjjr","MINI-qcvj-rh28-3j5p","MINI-qjhg-9pg8-p6rx","MINI-qpgg-3gw3-37jw","MINI-qpvp-mvmm-f93p","MINI-qq7q-qp44-mqh2","MINI-qr9g-6cxh-wwmq","MINI-qv6m-m66h-48mp","MINI-qx35-c22x-3gg9","MINI-r5cr-gp6j-h26w","MINI-r5vw-rrcc-wrmp","MINI-r5wx-m32x-rqxr","MINI-r7gg-h8pc-m7p5","MINI-rg5q-jmr3-243x","MINI-rhc4-382v-mphq","MINI-rjw3-2p8q-9r2p","MINI-rm53-77jr-pf3m","MINI-rp3v-q2hv-7rq8","MINI-rq2g-q38f-wj2g","MINI-rq2w-jwrg-fcr6","MINI-rqqh-662w-2frj","MINI-rrx3-gh55-rjc6","MINI-rwpq-g348-28ch","MINI-v28f-pwqh-69r5","MINI-vgrx-44h6-8hrq","MINI-vh9r-f3rp-77hv","MINI-vmcc-qpqp-cc26","MINI-vq65-h352-w8cv","MINI-vqh3-p985-jx96","MINI-vrj3-6px3-wq64","MINI-w2fq-9g5f-8mf9","MINI-w728-3xm3-334c","MINI-w7fx-w3pr-25h7","MINI-w9pf-3rfc-4r64","MINI-w9r7-3f98-rj3p","MINI-wcjx-4qqr-68xj","MINI-wcqh-j8ff-4433","MINI-whc6-53w4-mqjv","MINI-whjx-w5c9-pp42","MINI-wjgr-xf2v-56q7","MINI-wjxj-m26h-xf27","MINI-wp74-mwqr-6q6p","MINI-ww78-v82p-6fv3","MINI-x2p6-wqph-rqvx","MINI-x2x5-9qv7-952h","MINI-x5m9-62v9-x67g","MINI-x677-vhm5-c2fw","MINI-x685-pc4w-487x","MINI-x7qf-r9g3-2chg","MINI-x85j-33gr-c3qw","MINI-x8vm-jmpc-gc8r","MINI-xgfp-32mj-m986","MINI-xh8p-hfg5-8f87","MINI-xj92-39m2-x58g","MINI-xpr2-3fpv-jhgp","MINI-xq66-5c4q-q32g","MINI-xq7c-84qv-67qq","MINI-xr66-f33h-7jg8","MINI-xvw7-435r-cx6j"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Go S3 Crypto SDK","requires_auth":"low_privilege","summary":"An attacker with write access to an S3 bucket can decrypt files encrypted with the vulnerable Go SDK by exploiting a CBC padding oracle vulnerability.","user_interaction":"not_required","vuln_class":"weak_cryptography"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Google","cpe":[{"product":"aws_s3_crypto_sdk","vendor":"amazon"}],"cvss":{"score":5.6,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-327","name":"Use of a Broken or Risky Cryptographic Algorithm"}],"description":"A padding oracle vulnerability exists in the AWS S3 Crypto SDK for GoLang versions prior to V2. The SDK allows users to encrypt files with AES-CBC without computing a Message Authentication Code (MAC), which then allows an attacker who has write access to the target's S3 bucket and can observe whether or not an endpoint with access to the key can decrypt a file, they can reconstruct the plaintext with (on average) 128*length (plaintext) queries to the endpoint, by exploiting CBC's ability to manipulate the bytes of the next block and PKCS5 padding errors. It is recommended to update your SDK to V2 or later, and re-encrypt your files.","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":"CBC padding oracle in AWS S3 Crypto SDK for GoLang","id":"CVE-2020-8911","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"weak_cryptography","year":"2020"},"n_packages":3,"n_references":2,"next":{"headline":"In-band key negotiation issue in AWS S3 Crypto SDK for GoLang","id":"CVE-2020-8912"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/aws/aws-sdk-go","purl":"pkg:golang/github.com/aws/aws-sdk-go","source":"GO-2022-0646"},{"ecosystem":"Go","fixed":["1.34.0"],"introduced":["0"],"last_affected":[],"package":"github.com/aws/aws-sdk-go","purl":null,"source":"GHSA-f5pg-7wfw-84q9"},{"ecosystem":"Go","fixed":["1.34.0"],"introduced":["0"],"last_affected":[],"package":"github.com/aws/aws-sdk-go","purl":"pkg:golang/github.com/aws/aws-sdk-go","source":"GHSA-f5pg-7wfw-84q9"}],"prev":{"headline":"Auth Bypass in Google's Closure-Library","id":"CVE-2020-8910"},"products":["AWS S3 Crypto SDK for GoLang"],"published":"2020-08-11","related":[{"cvss_score":2.5,"headline":"In-band key negotiation issue in AWS S3 Crypto SDK for GoLang","id":"CVE-2020-8912","kev_date_added":null,"published":"2020-08-11"}],"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":"2024-08-04","vendors":["Google LLC"]},"summary":"An attacker with write access to an S3 bucket can decrypt files encrypted with the vulnerable Go SDK by exploiting a CBC padding oracle vulnerability.","url":"https://insights.sbomify.com/CVE-2020-8911/"}