{"id":"UBUNTU-CVE-2021-3470","details":"A heap overflow issue was found in Redis in versions before 5.0.10, before 6.0.9 and before 6.2.0 when using a heap allocator other than jemalloc or glibc's malloc, leading to potential out of bound write or process crash. Effectively this flaw does not affect the vast majority of users, who use jemalloc or glibc malloc.","modified":"2026-04-14T09:42:05.210997Z","published":"2021-03-31T14:15:00Z","upstream":["CVE-2021-3470"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-3470"},{"type":"REPORT","url":"https://github.com/redis/redis/pull/7963"},{"type":"REPORT","url":"https://github.com/redis/redis/commit/9824fe3e392caa04dc1b4071886e9ac402dd6d95"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1943623"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-3470"}],"affected":[{"package":{"name":"redis","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/redis@2:2.8.4-2ubuntu0.2+esm5?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:2.6.13-1","2:2.6.16-3","2:2.8.0-1","2:2.8.2-1","2:2.8.4-2","2:2.8.4-2ubuntu0.2","2:2.8.4-2ubuntu0.2+esm1","2:2.8.4-2ubuntu0.2+esm2","2:2.8.4-2ubuntu0.2+esm3","2:2.8.4-2ubuntu0.2+esm4","2:2.8.4-2ubuntu0.2+esm5"],"ecosystem_specific":{"binaries":[{"binary_name":"redis-server","binary_version":"2:2.8.4-2ubuntu0.2+esm5"},{"binary_name":"redis-tools","binary_version":"2:2.8.4-2ubuntu0.2+esm5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3470.json"}},{"package":{"name":"redis","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/redis@2:3.0.6-1ubuntu0.4+esm5?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:3.0.3-3","2:3.0.5-1","2:3.0.5-2","2:3.0.5-3","2:3.0.5-4","2:3.0.6-1","2:3.0.6-1ubuntu0.2","2:3.0.6-1ubuntu0.3","2:3.0.6-1ubuntu0.4","2:3.0.6-1ubuntu0.4+esm1","2:3.0.6-1ubuntu0.4+esm2","2:3.0.6-1ubuntu0.4+esm3","2:3.0.6-1ubuntu0.4+esm4","2:3.0.6-1ubuntu0.4+esm5"],"ecosystem_specific":{"binaries":[{"binary_name":"redis-sentinel","binary_version":"2:3.0.6-1ubuntu0.4+esm5"},{"binary_name":"redis-server","binary_version":"2:3.0.6-1ubuntu0.4+esm5"},{"binary_name":"redis-tools","binary_version":"2:3.0.6-1ubuntu0.4+esm5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3470.json"}},{"package":{"name":"redis","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/redis@5:4.0.9-1ubuntu0.2+esm7?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4:4.0.1-7","4:4.0.2-6","4:4.0.2-9","5:4.0.5-1","5:4.0.6-1","5:4.0.6-2","5:4.0.7-1","5:4.0.8-1","5:4.0.8-2","5:4.0.9-1","5:4.0.9-1ubuntu0.1","5:4.0.9-1ubuntu0.2","5:4.0.9-1ubuntu0.2+esm2","5:4.0.9-1ubuntu0.2+esm3","5:4.0.9-1ubuntu0.2+esm4","5:4.0.9-1ubuntu0.2+esm5","5:4.0.9-1ubuntu0.2+esm6","5:4.0.9-1ubuntu0.2+esm7"],"ecosystem_specific":{"binaries":[{"binary_version":"5:4.0.9-1ubuntu0.2+esm7","binary_name":"redis"},{"binary_name":"redis-sentinel","binary_version":"5:4.0.9-1ubuntu0.2+esm7"},{"binary_name":"redis-server","binary_version":"5:4.0.9-1ubuntu0.2+esm7"},{"binary_name":"redis-tools","binary_version":"5:4.0.9-1ubuntu0.2+esm7"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3470.json"}},{"package":{"name":"redis","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/redis@5:5.0.7-2ubuntu0.1+esm4?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5:5.0.5-2build1","5:5.0.6-1","5:5.0.7-1","5:5.0.7-2","5:5.0.7-2ubuntu0.1~esm1","5:5.0.7-2ubuntu0.1","5:5.0.7-2ubuntu0.1+esm1","5:5.0.7-2ubuntu0.1+esm2","5:5.0.7-2ubuntu0.1+esm3","5:5.0.7-2ubuntu0.1+esm4"],"ecosystem_specific":{"binaries":[{"binary_name":"redis","binary_version":"5:5.0.7-2ubuntu0.1+esm4"},{"binary_version":"5:5.0.7-2ubuntu0.1+esm4","binary_name":"redis-sentinel"},{"binary_name":"redis-server","binary_version":"5:5.0.7-2ubuntu0.1+esm4"},{"binary_name":"redis-tools","binary_version":"5:5.0.7-2ubuntu0.1+esm4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3470.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"negligible"}]}