{"answers":{"affected":"8 open source packages ship an affected version, including bl. It affects 2 products.","exploited":"There is no known exploitation of CVE-2020-8244 in the wild and no public exploit code.","fix":"Upgrade bl to a fixed version for your release line: 1.2.3, 2.2.1, 3.0.1 or 4.0.3.","what":"CVE-2020-8244 is a medium-severity vulnerability in Debian Debian Linux, published on 30 Aug 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-8244 and fix it if it is affected.\n\nWhat it is: CVE-2020-8244 is a medium-severity vulnerability in Debian Debian Linux, published on 30 Aug 2020. 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-2020-8244 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- bl (npm): affected all versions; fixed in 1.2.3\n- bl (npm): affected all versions; fixed in 1.2.3\n- bl (npm): affected from 2.0.0; fixed in 2.2.1\n- bl (npm): affected from 2.0.0; fixed in 2.2.1\n- bl (npm): affected from 3.0.0; fixed in 3.0.1\n- bl (npm): affected from 3.0.0; fixed in 3.0.1\n- bl (npm): affected from 4.0.0; fixed in 4.0.3\n- bl (npm): affected from 4.0.0; fixed in 4.0.3\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-2020-8244/ (Markdown: https://insights.sbomify.com/CVE-2020-8244/index.md)","id":"CVE-2020-8244","markdown":"https://insights.sbomify.com/CVE-2020-8244/index.md","name":"CVE-2020-8244","record":{"aliases":["CLSA-2026-1772756021","CLSA-2026-1774225189","CLSA-2026-1776731791","CLSA-2026-1792491634","DEBIAN-CVE-2020-8244","DLA-2698-1","GHSA-pp7h-53gx-mx7r","UBUNTU-CVE-2020-8244","USN-5098-1","USN-5159-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Node.js BufferList library","requires_auth":"none","summary":"An attacker can trigger a buffer over-read in the bl library to expose uninitialized memory, potentially leaking sensitive data.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"hackerone","cpe":[{"product":"bufferlist","vendor":"bufferlist_project"},{"product":"debian_linux","vendor":"debian"}],"cvss":{"score":6.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"},{"id":"CWE-126","name":"Buffer Over-read"}],"description":"A buffer over-read vulnerability exists in bl \u003c4.0.3, \u003c3.0.1, \u003c2.2.1, and \u003c1.2.3 which could allow an attacker to supply user input (even typed) that if it ends up in consume() argument and can become negative, the BufferList state can be corrupted, tricking it into exposing uninitialized memory via regular .slice() calls.","ecosystems":["npm"],"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":"Remote Memory Exposure in bl","id":"CVE-2020-8244","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":"debian:debian_linux","products":["debian:debian_linux"],"type":"information_disclosure","year":"2020"},"n_packages":8,"n_references":2,"next":{"headline":"Cross-site scripting in Citrix ADC, Citrix Gateway","id":"CVE-2020-8245"},"packages":[{"ecosystem":"npm","fixed":["1.2.3"],"introduced":["0"],"last_affected":[],"package":"bl","purl":null,"source":"GHSA-pp7h-53gx-mx7r"},{"ecosystem":"npm","fixed":["1.2.3"],"introduced":["0"],"last_affected":[],"package":"bl","purl":"pkg:npm/bl","source":"GHSA-pp7h-53gx-mx7r"},{"ecosystem":"npm","fixed":["2.2.1"],"introduced":["2.0.0"],"last_affected":[],"package":"bl","purl":null,"source":"GHSA-pp7h-53gx-mx7r"},{"ecosystem":"npm","fixed":["2.2.1"],"introduced":["2.0.0"],"last_affected":[],"package":"bl","purl":"pkg:npm/bl","source":"GHSA-pp7h-53gx-mx7r"},{"ecosystem":"npm","fixed":["3.0.1"],"introduced":["3.0.0"],"last_affected":[],"package":"bl","purl":null,"source":"GHSA-pp7h-53gx-mx7r"},{"ecosystem":"npm","fixed":["3.0.1"],"introduced":["3.0.0"],"last_affected":[],"package":"bl","purl":"pkg:npm/bl","source":"GHSA-pp7h-53gx-mx7r"},{"ecosystem":"npm","fixed":["4.0.3"],"introduced":["4.0.0"],"last_affected":[],"package":"bl","purl":null,"source":"GHSA-pp7h-53gx-mx7r"},{"ecosystem":"npm","fixed":["4.0.3"],"introduced":["4.0.0"],"last_affected":[],"package":"bl","purl":"pkg:npm/bl","source":"GHSA-pp7h-53gx-mx7r"}],"prev":{"headline":"Ivanti Pulse Connect Secure Code Execution","id":"CVE-2020-8243"},"products":["bl"],"published":"2020-08-30","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"An attacker can trigger a buffer over-read in the bl library to expose uninitialized memory, potentially leaking sensitive data.","url":"https://insights.sbomify.com/CVE-2020-8244/"}