{"id":"CVE-2018-18584","details":"In mspack/cab.h in libmspack before 0.8alpha and cabextract before 1.8, the CAB block input buffer is one byte too small for the maximal Quantum block, leading to an out-of-bounds write.","modified":"2026-04-16T06:17:37.553312456Z","published":"2018-10-23T02:29:00.263Z","related":["SUSE-SU-2019:0748-1","SUSE-SU-2019:13992-1","SUSE-SU-2020:2711-1","openSUSE-SU-2024:13619-1"],"references":[{"type":"ADVISORY","url":"https://usn.ubuntu.com/3814-3/"},{"type":"ADVISORY","url":"https://www.openwall.com/lists/oss-security/2018/10/22/1"},{"type":"ADVISORY","url":"https://www.starwindsoftware.com/security/sw-20181213-0001/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:2049"},{"type":"ADVISORY","url":"https://bugs.debian.org/911640"},{"type":"ADVISORY","url":"https://www.cabextract.org.uk/#changes"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2018/10/msg00017.html"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/201903-20"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3814-1/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3814-2/"},{"type":"FIX","url":"https://github.com/kyz/libmspack/commit/40ef1b4093d77ad3a5cfcee1f5cb6108b3a3bcc2"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/kyz/libmspack","events":[{"introduced":"0"},{"fixed":"b86d62ca5a90f971750e2af9cea60536cde044a7"},{"introduced":"0"},{"last_affected":"a22627dd5180e0ce9c558d0c10b174c760085f57"},{"introduced":"0"},{"last_affected":"164fb2d23a0894b726b72a047d34191d64a18104"},{"introduced":"0"},{"last_affected":"03296dd44347ab3111ba23b8e3945e2b537b6275"},{"introduced":"0"},{"last_affected":"a2b36d2f477a183c046b66c731936fa56eba53b4"},{"introduced":"0"},{"last_affected":"bc1010b120a987de3da053ba61870fcbecfbd112"},{"introduced":"0"},{"last_affected":"846db1c3419eca65f8d09b5452063870a65ed9f0"},{"fixed":"40ef1b4093d77ad3a5cfcee1f5cb6108b3a3bcc2"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"1.8"},{"introduced":"0"},{"last_affected":"0.3-alpha"},{"introduced":"0"},{"last_affected":"0.4-alpha"},{"introduced":"0"},{"last_affected":"0.5-alpha"},{"introduced":"0"},{"last_affected":"0.6-alpha"},{"introduced":"0"},{"last_affected":"0.7-alpha"},{"introduced":"0"},{"last_affected":"0.7.1-alpha"}]}}],"versions":["1.7","v0.0.20060920alpha","v0.3alpha","v0.4alpha","v0.5alpha","v0.6alpha","v0.7.1alpha","v0.7alpha","v0.8alpha","v1.0","v1.1","v1.2","v1.3","v1.4","v1.5"],"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"7.0"}]},{"events":[{"introduced":"0"},{"last_affected":"12.04"}]},{"events":[{"introduced":"0"},{"last_affected":"14.04"}]},{"events":[{"introduced":"0"},{"last_affected":"16.04"}]},{"events":[{"introduced":"0"},{"last_affected":"18.04"}]},{"events":[{"introduced":"0"},{"last_affected":"18.10"}]},{"events":[{"introduced":"0"},{"last_affected":"11-sp3"}]},{"events":[{"introduced":"0"},{"last_affected":"12-ga"}]},{"events":[{"introduced":"0"},{"last_affected":"12-sp1"}]},{"events":[{"introduced":"0"},{"last_affected":"12-sp2"}]}],"vanir_signatures_modified":"2026-04-11T11:40:03Z","source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-18584.json","vanir_signatures":[{"source":"https://github.com/kyz/libmspack/commit/40ef1b4093d77ad3a5cfcee1f5cb6108b3a3bcc2","signature_version":"v1","signature_type":"Line","id":"CVE-2018-18584-3cecbcbb","deprecated":false,"target":{"file":"libmspack/mspack/cab.h"},"digest":{"threshold":0.9,"line_hashes":["158240116603677036819695488739621403627","269271669553547603752875556704960232567","37544086892789893982291370903966203759","169871899111443360361982281484202037437","257408676381020978427987901723890493853","293194494984887529254768129453583513323","143245517895524289051156808528142211988","161511177930475588070979568568117240902"]}}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}