{"id":"CVE-2020-4033","details":"In FreeRDP before version 2.1.2, there is an out of bounds read in RLEDECOMPRESS. All FreeRDP based clients with sessions with color depth \u003c 32 are affected. This is fixed in version 2.1.2.","modified":"2026-04-12T00:01:20.693818Z","published":"2020-06-22T22:15:13.353Z","related":["ALSA-2021:1849","GHSA-7rhj-856w-82p8","MGASA-2020-0297","SUSE-SU-2020:2032-1","SUSE-SU-2020:2068-1","SUSE-SU-2020:2272-1","openSUSE-SU-2020:1090-1","openSUSE-SU-2024:10768-1"],"database_specific":{"unresolved_ranges":[{"source":"CPE_FIELD","extracted_events":[{"last_affected":"18.04"}],"cpe":"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:esm:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"20.04"}],"cpe":"cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"10.0"}],"cpe":"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"31"}],"cpe":"cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"32"}],"cpe":"cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"15.1"}],"cpe":"cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*"}]},"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6Y35HBHG2INICLSGCIKNAR7GCXEHQACQ/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XOZLH35OJWIQLM7FYDXAP2EAUBDXE76V/"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00080.html"},{"type":"ADVISORY","url":"http://www.freerdp.com/2020/06/22/2_1_2-released"},{"type":"ADVISORY","url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-7rhj-856w-82p8"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00008.html"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4481-1/"},{"type":"FIX","url":"https://github.com/FreeRDP/FreeRDP/commit/0a98c450c58ec150e44781c89aa6f8e7e0f571f5"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/freerdp/freerdp","events":[{"introduced":"0"},{"fixed":"584efae073386e8c5f6bc265b05c87d508a9bcbc"},{"fixed":"0a98c450c58ec150e44781c89aa6f8e7e0f571f5"}],"database_specific":{"source":["CPE_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"2.1.2"}],"cpe":"cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*"}}],"versions":["1.0-beta1","1.0-beta2","1.0-beta4","1.0-beta5","1.0.0","1.0.1","1.1.0-beta+2013071101","1.1.0-beta1","1.1.0-beta1+android2","1.1.0-beta1+android3","1.1.0-beta1+android4","1.1.0-beta1+android5","1.1.0-beta1+ios1","1.1.0-beta1+ios2","1.1.0-beta1+ios3","1.1.0-beta1+ios4","1.2.0-beta1+android7","1.2.0-beta1+android9","2.0.0","2.0.0-beta1+android10","2.0.0-beta1+android11","2.0.0-rc0","2.0.0-rc1","2.0.0-rc2","2.0.0-rc3","2.0.0-rc4","2.1.0","2.1.1"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-4033.json","vanir_signatures":[{"signature_type":"Function","id":"CVE-2020-4033-3cd1e04d","digest":{"length":4507,"function_hash":"94257069752977040341272531883580787369"},"deprecated":false,"target":{"file":"libfreerdp/codec/include/bitmap.c","function":"RLEDECOMPRESS"},"source":"https://github.com/freerdp/freerdp/commit/0a98c450c58ec150e44781c89aa6f8e7e0f571f5","signature_version":"v1"},{"signature_type":"Line","id":"CVE-2020-4033-b8667d11","digest":{"threshold":0.9,"line_hashes":["39066945076943679846899881374503470567","236360246893272756327673369714219300594","303072552976781912056663844091381197478","293101074181156110045527393670316470852","26103867433618001109866561315132363417","59463764602416359621987257370194610988","133926517239065278553257719413163608361","204282032633232275493298484655307215424","321749008865553814556823830518696463922","137304051175667516453654756671465560297","335363998141943889315488190711647841322","330507889033086119582898249029913691785","133926517239065278553257719413163608361","297258688963073114724819441908903814554","129912079427290320704623242374214830006","45854654747860260671680040004049018895","35369803322128794775560581700219326843","171162864366741136671138242120368466636","32843778905422824152611737245177932421","93051036519504234057740809413660568627","300239225307197318179262946557036985161"]},"deprecated":false,"target":{"file":"libfreerdp/codec/include/bitmap.c"},"source":"https://github.com/freerdp/freerdp/commit/0a98c450c58ec150e44781c89aa6f8e7e0f571f5","signature_version":"v1"}],"vanir_signatures_modified":"2026-04-12T00:01:20Z"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L"}]}