{"id":"CVE-2017-7767","aliases":["EUVD-2017-16742","GHSA-cfrv-hc6m-h3rp","MGASA-2018-0018"],"status":"published","title":"The Mozilla Maintenance Service can be invoked by an unprivileged user to overwrite arbitrary...","description":"The Mozilla Maintenance Service can be invoked by an unprivileged user to overwrite arbitrary files with junk data using the Mozilla Windows Updater, which runs with the Maintenance Service's privileged access. Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. This vulnerability affects Firefox ESR \u003c 52.2 and Firefox \u003c 54.","severity":{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00277,"percentile":0.20233,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2018-01-02T11:48:29Z","modified":"2026-06-17T01:25:09Z","affected":[{"source":"osv","ecosystem":"Mageia:5","package":"iceape","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.49.1-3.mga5"}]}],"bundled":112},{"source":"osv","ecosystem":"Mageia:6","package":"iceape","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.49.1-3.mga6"}]}],"bundled":112}],"products":[{"vendor":"mozilla","product":"firefox"},{"vendor":"mozilla","product":"firefox esr"}],"references":[{"url":"http://www.securityfocus.com/bid/99057","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2017-15/","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"http://www.securitytracker.com/id/1038689","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1336964","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Vendor Advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2017-16/","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-7767"},{"url":"https://www.mozilla.org/security/advisories/mfsa2017-15"},{"url":"https://www.mozilla.org/security/advisories/mfsa2017-16"},{"url":"https://github.com/advisories/GHSA-cfrv-hc6m-h3rp"},{"url":"https://advisories.mageia.org/MGASA-2018-0018.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=22283","tags":["report"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2017-05/","tags":["advisory"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2017-12/","tags":["advisory"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2017-16/","tags":["advisory"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2017-19/","tags":["advisory"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2017-22/","tags":["advisory"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2017-25/","tags":["advisory"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2017-28/","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2017-7767","description":"The Mozilla Maintenance Service can be invoked by an unprivileged user to overwrite arbitrary files with junk data using the Mozilla Windows Updater, which runs with the Maintenance Service's privileged access. Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. This vulnerability affects Firefox ESR \u003c 52.2 and Firefox \u003c 54.","status":"published","published":"2018-06-11T21:00:00Z","modified":"2024-08-05T16:12:28.499Z","updated_at":"2026-11-02T14:33:20.843976Z"}],"euvd":[{"id":"EUVD-2017-16742","description":"The Mozilla Maintenance Service can be invoked by an unprivileged user to overwrite arbitrary files with junk data using the Mozilla Windows Updater, which runs with the Maintenance Service's privileged access. Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. This vulnerability affects Firefox ESR \u003c 52.2 and Firefox \u003c 54.","status":"published","published":"2018-06-11T21:00:00Z","modified":"2024-08-05T16:12:28Z","updated_at":"2026-11-03T02:39:07.559484Z"}],"ghsa":[{"id":"GHSA-cfrv-hc6m-h3rp","title":"The Mozilla Maintenance Service can be invoked by an unprivileged user to overwrite arbitrary...","description":"The Mozilla Maintenance Service can be invoked by an unprivileged user to overwrite arbitrary files with junk data using the Mozilla Windows Updater, which runs with the Maintenance Service's privileged access. Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. This vulnerability affects Firefox ESR \u003c 52.2 and Firefox \u003c 54.","status":"published","published":"2022-05-13T01:47:10Z","modified":"2025-11-25T18:33:17Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T15:04:56.973775Z"}],"nvd":[{"id":"CVE-2017-7767","description":"The Mozilla Maintenance Service can be invoked by an unprivileged user to overwrite arbitrary files with junk data using the Mozilla Windows Updater, which runs with the Maintenance Service's privileged access. Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. This vulnerability affects Firefox ESR \u003c 52.2 and Firefox \u003c 54.","status":"published","published":"2018-06-11T21:29:08.577Z","modified":"2026-06-17T01:25:09.42Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:04:18.679411Z"}],"osv":[{"id":"MGASA-2018-0018","title":"Updated iceape packages fix security vulnerabilities","description":"Updated iceape packages include security fixes from upstream Seamonkey\nand Firefox:\n\nMultiple flaws were found in the way Iceape 2.48 processes various types\nof web content, where loading a web page containing malicious content\ncould cause Iceape to crash, execute arbitrary code, or disclose\nsensitive information. (CVE-2016-10196,CVE-2017-5398,CVE-2017-5399,\nCVE-2017-5400,CVE-2017-5401,CVE-2017-5402,CVE-2017-5403,CVE-2017-5404,\nCVE-2017-5405,CVE-2017-5406,CVE-2017-5407,CVE-2017-5409,CVE-2017-5410,\nCVE-2017-5411,CVE-2017-5408,CVE-2017-5412,CVE-2017-5413,CVE-2017-5414,\nCVE-2017-5415,CVE-2017-5416,CVE-2017-5417,CVE-2017-5425,CVE-2017-5426,\nCVE-2017-5427,CVE-2017-5418,CVE-2017-5419,CVE-2017-5420,CVE-2017-5421,\nCVE-2017-5422,CVE-2017-5429,CVE-2017-5430,CVE-2017-5432,CVE-2017-5433,\nCVE-2017-5434,CVE-2017-5435,CVE-2017-5436,CVE-2017-5438,CVE-2017-5439,\nCVE-2017-5440,CVE-2017-5441,CVE-2017-5442,CVE-2017-5443,CVE-2017-5444,\nCVE-2017-5445,CVE-2017-5446,CVE-2017-5447,CVE-2017-5448,CVE-2017-5449,\nCVE-2017-5451,CVE-2017-5454,CVE-2017-5455,CVE-2017-5456,CVE-2017-5459,\nCVE-2017-5460,CVE-2017-5461,CVE-2017-5462,CVE-2017-5464,CVE-2017-5465,\nCVE-2017-5466,CVE-2017-5467,CVE-2017-5469,CVE-2017-5470,CVE-2017-5472,\nCVE-2017-7749,CVE-2017-7750,CVE-2017-7751,CVE-2017-7752,CVE-2017-7753,\nCVE-2017-7754,CVE-2017-7755,CVE-2017-7756,CVE-2017-7757,CVE-2017-7758,\nCVE-2017-7760,CVE-2017-7761,CVE-2017-7763,CVE-2017-7764,CVE-2017-7765,\nCVE-2017-7766,CVE-2017-7767,CVE-2017-7768,CVE-2017-7778,CVE-2017-7779,\nCVE-2017-7782,CVE-2017-7784,CVE-2017-7785,CVE-2017-7786,CVE-2017-7787,\nCVE-2017-7791,CVE-2017-7792,CVE-2017-7793,CVE-2017-7798,CVE-2017-7800,\nCVE-2017-7801,CVE-2017-7802,CVE-2017-7803,CVE-2017-7804,CVE-2017-7805,\nCVE-2017-7807,CVE-2017-7809,CVE-2017-7810,CVE-2017-7814,CVE-2017-7818,\nCVE-2017-7819,CVE-2017-7823,CVE-2017-7824,CVE-2017-7825,CVE-2017-7826,\nCVE-2017-7828,CVE-2017-7830,CVE-2017-7843,CVE-2017-7845)\n","status":"published","published":"2018-01-02T11:48:29Z","modified":"2026-04-16T06:24:36.415771916Z","updated_at":"2026-11-02T15:49:40.442238Z"}]}}