{"answers":{"affected":"4 open source packages ship an affected version, including github.com/ulikunitz/xz, golang and stdlib. It affects 4 products.","exploited":"There is no known exploitation of CVE-2020-16845 in the wild and no public exploit code.","fix":"Upgrade github.com/ulikunitz/xz to 0.5.8 or later.","what":"CVE-2020-16845 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 6 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-2020-16845 and fix it if it is affected.\n\nWhat it is: CVE-2020-16845 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 6 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-2020-16845 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/ulikunitz/xz (Go): affected all versions; fixed in 0.5.8\n- github.com/ulikunitz/xz (Go): affected all versions; fixed in 0.5.8\n- golang (Bitnami): affected all versions; fixed in 1.13.15, 1.14.7\n- stdlib (Go): affected all versions; fixed in 1.13.15, 1.14.7\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-2020-16845/ (Markdown: https://insights.sbomify.com/CVE-2020-16845/index.md)","id":"CVE-2020-16845","markdown":"https://insights.sbomify.com/CVE-2020-16845/index.md","name":"CVE-2020-16845","record":{"aliases":["AZL-79098","AZL-98940","BIT-golang-2020-16845","DEBIAN-CVE-2020-16845","GHSA-q6gq-997w-f55g","GO-2021-0142","RHSA-2020:5159","UBUNTU-CVE-2020-16845","USN-5725-1","USN-5725-2","openSUSE-SU-2020:1178-1","openSUSE-SU-2020:1194-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Go standard library","requires_auth":"none","summary":"An attacker can cause a denial of service via an infinite loop in Go's binary encoding functions by providing invalid inputs.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"go","vendor":"golang"},{"product":"leap","vendor":"opensuse"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-835","name":"Loop with Unreachable Exit Condition"}],"description":"Go before 1.13.15 and 14.x before 1.14.7 can have an infinite read loop in ReadUvarint and ReadVarint in encoding/binary via invalid inputs.","ecosystems":["Bitnami","Go","Red Hat:openshift:4.6::el8","openSUSE:Leap 15.1","openSUSE:Leap 15.2"],"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":"Withdrawn Advisory: Infinite loop in xz","id":"CVE-2020-16845","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"debian:debian_linux","products":["debian:debian_linux","fedoraproject:fedora","golang:go","opensuse:leap"],"type":"denial_of_service","year":"2020"},"n_packages":7,"n_references":15,"next":{"headline":"SaltStack Salt Shell Injection","id":"CVE-2020-16846"},"packages":[{"ecosystem":"Bitnami","fixed":["1.13.15","1.14.7"],"introduced":["0","1.14.0"],"last_affected":[],"package":"golang","purl":"pkg:bitnami/golang","source":"BIT-golang-2020-16845"},{"ecosystem":"Go","fixed":["0.5.8"],"introduced":["0"],"last_affected":[],"package":"github.com/ulikunitz/xz","purl":null,"source":"GHSA-q6gq-997w-f55g"},{"ecosystem":"Go","fixed":["0.5.8"],"introduced":["0"],"last_affected":[],"package":"github.com/ulikunitz/xz","purl":"pkg:golang/github.com/ulikunitz/xz","source":"GHSA-q6gq-997w-f55g"},{"ecosystem":"Go","fixed":["1.13.15","1.14.7"],"introduced":["0","1.14.0-0"],"last_affected":[],"package":"stdlib","purl":"pkg:golang/stdlib","source":"GO-2021-0142"},{"ecosystem":"Red Hat:openshift:4.6::el8","fixed":["0:0.0.6-5.el8"],"introduced":["0"],"last_affected":[],"package":"faq","purl":"pkg:rpm/redhat/faq","source":"RHSA-2020:5159"},{"ecosystem":"openSUSE:Leap 15.1","fixed":["1.13.15-lp151.8.1"],"introduced":["0"],"last_affected":[],"package":"go1.13","purl":"pkg:rpm/opensuse/go1.13\u0026distro=openSUSE%20Leap%2015.1","source":"openSUSE-SU-2020:1178-1"},{"ecosystem":"openSUSE:Leap 15.2","fixed":["1.13.15-lp152.2.7.1"],"introduced":["0"],"last_affected":[],"package":"go1.13","purl":"pkg:rpm/opensuse/go1.13\u0026distro=openSUSE%20Leap%2015.2","source":"openSUSE-SU-2020:1194-1"}],"prev":{"headline":"Authorization bypass in Istio","id":"CVE-2020-16844"},"products":["n/a"],"published":"2020-08-06","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"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":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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 cause a denial of service via an infinite loop in Go's binary encoding functions by providing invalid inputs.","url":"https://insights.sbomify.com/CVE-2020-16845/"}