{"id":"CVE-2023-6858","state":"PUBLISHED","title":"Firefox was susceptible to a heap buffer overflow in `nsTextFragment` due to insufficient OOM handling. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Fir","description":"Firefox was susceptible to a heap buffer overflow in `nsTextFragment` due to insufficient OOM handling. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.","publishedAt":"2023-12-19T13:38:38.757Z","updatedAt":"2025-05-07T20:25:21.051Z","severity":{"score":8.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"mozilla","products":["Mozilla Firefox ESR","Mozilla Thunderbird","Mozilla Firefox"],"affected":[{"vendor":"Mozilla","product":"Firefox ESR","versions":[{"version":"unspecified","status":"affected","lessThan":"115.6","versionType":"custom"}]},{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"unspecified","status":"affected","lessThan":"115.6","versionType":"custom"}]},{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"unspecified","status":"affected","lessThan":"121","versionType":"custom"}]}],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=1826791","https://www.mozilla.org/security/advisories/mfsa2023-54/","https://www.mozilla.org/security/advisories/mfsa2023-55/","https://www.mozilla.org/security/advisories/mfsa2023-56/","https://www.debian.org/security/2023/dsa-5581","https://www.debian.org/security/2023/dsa-5582","https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html","https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html","https://security.gentoo.org/glsa/202401-10"],"weaknesses":["CWE-787"],"ingestedAt":"2026-10-29T20:06:42.242Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/6xxx/CVE-2023-6858.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-6858","state":"PUBLISHED","datePublished":"2023-12-19T13:38:38.757Z","dateUpdated":"2025-05-07T20:25:21.051Z","assignerShortName":"mozilla","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateReserved":"2023-12-15T17:42:55.349Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"Firefox was susceptible to a heap buffer overflow in `nsTextFragment` due to insufficient OOM handling. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121."}],"affected":[{"vendor":"Mozilla","product":"Firefox ESR","versions":[{"version":"unspecified","status":"affected","lessThan":"115.6","versionType":"custom"}]},{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"unspecified","status":"affected","lessThan":"115.6","versionType":"custom"}]},{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"unspecified","status":"affected","lessThan":"121","versionType":"custom"}]}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1826791"},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-54/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-55/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-56/"},{"url":"https://www.debian.org/security/2023/dsa-5581"},{"url":"https://www.debian.org/security/2023/dsa-5582"},{"url":"https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html"},{"url":"https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html"},{"url":"https://security.gentoo.org/glsa/202401-10"}],"problemTypes":[{"descriptions":[{"description":"Heap buffer overflow in nsTextFragment","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"mozilla","orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateUpdated":"2024-01-07T11:06:32.345Z"},"credits":[{"lang":"en","value":"Irvan Kurniawan"}]},"adp":[{"title":"CVE Program Container","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1826791","tags":["x_transferred"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-54/","tags":["x_transferred"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-55/","tags":["x_transferred"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-56/","tags":["x_transferred"]},{"url":"https://www.debian.org/security/2023/dsa-5581","tags":["x_transferred"]},{"url":"https://www.debian.org/security/2023/dsa-5582","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html","tags":["x_transferred"]},{"url":"https://security.gentoo.org/glsa/202401-10","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T08:42:07.449Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":8.8,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-05-07T20:24:54.198215Z","id":"CVE-2023-6858","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-787","type":"CWE","lang":"en","description":"CWE-787 Out-of-bounds Write"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-05-07T20:25:21.051Z"}}]}}}