{"id":"CVE-2018-7731","aliases":["DEBIAN-CVE-2018-7731","EUVD-2018-19446","GHSA-w7rp-6q39-g7qw","MGASA-2018-0239","UBUNTU-CVE-2018-7731","USN-3668-1","openSUSE-SU-2024:10745-1"],"status":"published","title":"An issue was discovered in Exempi through 2.4.4. XMPFiles/source/FormatSupport/WEBP_Support.cpp...","description":"An issue was discovered in Exempi through 2.4.4. XMPFiles/source/FormatSupport/WEBP_Support.cpp does not check whether a bitstream has a NULL value, leading to a NULL pointer dereference in the WEBP::VP8XChunk class.","severity":{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.01229,"percentile":0.69089,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-476"],"published":"2018-03-06T00:00:00Z","modified":"2026-10-23T18:03:09Z","fixes":[{"ecosystem":"Debian:12","package":"exempi","fixed_in":["2.4.5-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"exempi","fixed_in":["2.4.5-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"exempi","fixed_in":["2.4.5-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"exempi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.5-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"exempi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.5-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"exempi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.5-1"}]}]},{"source":"osv","ecosystem":"Mageia:6","package":"exempi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.5-1.mga6"}]}],"bundled":7},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"exempi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.1-1ubuntu1.1"}]}],"versions":["2.2.1-1ubuntu1"],"bundled":8},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"exempi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.2-2ubuntu0.1"}]}],"versions":["2.2.2-2"],"bundled":8},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"exempi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.2-1.3"}]}],"bundled":5}],"products":[{"vendor":"canonical","product":"ubuntu_linux"},{"vendor":"exempi_project","product":"exempi"}],"references":[{"url":"https://cgit.freedesktop.org/exempi/commit/?id=aabedb5e749dd59112a3fe1e8e08f2d934f56666","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://usn.ubuntu.com/3668-1/","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","Third Party Advisory","advisory"]},{"url":"https://bugs.freedesktop.org/show_bug.cgi?id=105247","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BCFXKOOATZ2B5G3G7EBXZWVZHEABN4ZV/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-7731"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BCFXKOOATZ2B5G3G7EBXZWVZHEABN4ZV/"},{"url":"https://github.com/advisories/GHSA-w7rp-6q39-g7qw"},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-7731","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2018-0239.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=22871","tags":["report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/ZTR7ZDRVKLKSI65QBRMJFDTW4EPRPZYH/","tags":["web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/H4PKNNGR3XYNB7B7BYNWTABCOPERDDLB/","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2018-7731","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-3668-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-7731","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-18233","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-18234","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-18236","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-18238","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2018-7728","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2018-7729","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2018-7730","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2018-12648","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-7728","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-7729","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-7730","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-7731","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2018-7731","description":"An issue was discovered in Exempi through 2.4.4. XMPFiles/source/FormatSupport/WEBP_Support.cpp does not check whether a bitstream has a NULL value, leading to a NULL pointer dereference in the WEBP::VP8XChunk class.","status":"published","published":"2018-03-06T18:00:00Z","modified":"2024-08-05T06:31:05.056Z","updated_at":"2026-11-02T14:35:09.908186Z"}],"euvd":[{"id":"EUVD-2018-19446","description":"An issue was discovered in Exempi through 2.4.4. XMPFiles/source/FormatSupport/WEBP_Support.cpp does not check whether a bitstream has a NULL value, leading to a NULL pointer dereference in the WEBP::VP8XChunk class.","status":"published","published":"2018-03-06T18:00:00Z","modified":"2024-08-05T06:31:05Z","updated_at":"2026-11-03T02:40:05.186892Z"}],"ghsa":[{"id":"GHSA-w7rp-6q39-g7qw","title":"An issue was discovered in Exempi through 2.4.4. XMPFiles/source/FormatSupport/WEBP_Support.cpp...","description":"An issue was discovered in Exempi through 2.4.4. XMPFiles/source/FormatSupport/WEBP_Support.cpp does not check whether a bitstream has a NULL value, leading to a NULL pointer dereference in the WEBP::VP8XChunk class.","status":"published","published":"2022-05-13T01:14:05Z","modified":"2023-02-01T05:04:22Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:50:08.898362Z"}],"nvd":[{"id":"CVE-2018-7731","description":"An issue was discovered in Exempi through 2.4.4. XMPFiles/source/FormatSupport/WEBP_Support.cpp does not check whether a bitstream has a NULL value, leading to a NULL pointer dereference in the WEBP::VP8XChunk class.","status":"published","published":"2018-03-06T18:29:00.58Z","modified":"2026-06-17T02:03:36.697Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:04:23.783914Z"}],"osv":[{"id":"CVE-2018-7731","description":"An issue was discovered in Exempi through 2.4.4. XMPFiles/source/FormatSupport/WEBP_Support.cpp does not check whether a bitstream has a NULL value, leading to a NULL pointer dereference in the WEBP::VP8XChunk class.","status":"published","published":"2018-03-06T18:29:00.58Z","modified":"2026-04-16T06:17:46.875063024Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:09.74357Z"},{"id":"DEBIAN-CVE-2018-7731","description":"An issue was discovered in Exempi through 2.4.4. XMPFiles/source/FormatSupport/WEBP_Support.cpp does not check whether a bitstream has a NULL value, leading to a NULL pointer dereference in the WEBP::VP8XChunk class.","status":"published","published":"2018-03-06T18:29:00.58Z","modified":"2026-10-23T18:03:09.135161465Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:31.170944Z"},{"id":"UBUNTU-CVE-2018-7731","description":"An issue was discovered in Exempi through 2.4.4. XMPFiles/source/FormatSupport/WEBP_Support.cpp does not check whether a bitstream has a NULL value, leading to a NULL pointer dereference in the WEBP::VP8XChunk class.","status":"withdrawn","published":"2018-03-06T00:00:00Z","modified":"2026-02-04T04:23:20.30937Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:18.772093Z"},{"id":"MGASA-2018-0239","title":"Updated exempi package fixes security vulnerabilities","description":"An issue was discovered in Exempi through 2.4.4. There is a stack-based\nbuffer over-read in the PostScript_MetaHandler::ParsePSFile() function\nin PostScript_Handler.cpp (CVE-2018-7729).\n\nAn issue was discovered in Exempi through 2.4.4. WEBP_Support.cpp does\nnot check whether a bitstream has a NULL value, leading to a NULL\npointer dereference in the WEBP::VP8XChunk class (CVE-2018-7731).\n\nAn issue was discovered in Exempi before 2.4.4. Integer overflow in the\nChunk class in RIFF.cpp allows remote attackers to cause a denial of\nservice (infinite loop) via crafted XMP data in a .avi file\n(CVE-2017-18233).\n\nAn issue was discovered in Exempi before 2.4.3. It allows remote\nattackers to cause a denial of service (invalid memcpy with resultant\nuse-after-free) or possibly have unspecified other impact via a .pdf\nfile containing JPEG data, related to ReconcileTIFF.cpp,\nTIFF_MemoryReader.cpp, and TIFF_Support.hpp (CVE-2017-18234).\n\nAn issue was discovered in Exempi before 2.4.3. The VPXChunk class in\nWEBP_Support.cpp does not ensure nonzero widths and heights, which\nallows remote attackers to cause a denial of service (assertion failure\nand application exit) via a crafted .webp file (CVE-2017-18235).\n\nAn issue was discovered in Exempi before 2.4.4. The\nASF_Support::ReadHeaderObject function in ASF_Support.cpp allows remote\nattackers to cause a denial of service (infinite loop) via a crafted\n.asf file (CVE-2017-18236).\n\nAn issue was discovered in Exempi before 2.4.3. The\nPostScript_Support::ConvertToDate function in PostScript_Support.cpp\nallows remote attackers to cause a denial of service (invalid pointer\ndereference and application crash) via a crafted .ps file\n(CVE-2017-18237).\n","status":"published","published":"2018-05-16T08:24:56Z","modified":"2026-04-16T06:23:16.591969892Z","updated_at":"2026-11-02T15:49:40.442238Z"},{"id":"openSUSE-SU-2024:10745-1","title":"exempi-tools-2.5.2-1.3 on GA media","description":"These are all security issues fixed in the exempi-tools-2.5.2-1.3 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T02:27:11.072912Z","updated_at":"2026-11-02T16:58:34.487567Z"},{"id":"USN-3668-1","title":"exempi vulnerabilities","description":"It was discovered that Exempi incorrectly handled certain media files. If a\nuser or automated system were tricked into opening a specially crafted\nfile, a remote attacker could cause Exempi to hang or crash, resulting in a\ndenial of service, or possibly execute arbitrary code.\n","status":"published","published":"2018-06-04T12:55:55Z","modified":"2026-04-22T09:45:43.104126Z","updated_at":"2026-11-02T16:58:13.496563Z"}]}}