{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-4577","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","state":"PUBLISHED","assignerShortName":"mozilla","dateReserved":"2023-08-29T03:36:45.249Z","datePublished":"2023-09-11T08:01:02.684Z","dateUpdated":"2025-12-18T15:23:09.123Z"},"containers":{"cna":{"affected":[{"product":"Firefox","vendor":"Mozilla","versions":[{"lessThan":"117","status":"affected","version":"unspecified","versionType":"custom"}]},{"product":"Firefox ESR","vendor":"Mozilla","versions":[{"lessThan":"115.2","status":"affected","version":"unspecified","versionType":"custom"}]},{"product":"Thunderbird","vendor":"Mozilla","versions":[{"lessThan":"115.2","status":"affected","version":"unspecified","versionType":"custom"}]}],"descriptions":[{"lang":"en","value":"When `UpdateRegExpStatics` attempted to access `initialStringHeap` it could already have been garbage collected prior to entering the function, which could potentially have led to an exploitable crash. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.","supportingMedia":[{"type":"text/html","base64":false,"value":"When <code>UpdateRegExpStatics</code> attempted to access <code>initialStringHeap</code> it could already have been garbage collected prior to entering the function, which could potentially have led to an exploitable crash. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2."}]}],"title":"Memory corruption in JIT UpdateRegExpStatics","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1847397"},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-34/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-36/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-38/"}],"credits":[{"lang":"en","value":"Lukas Bernhard"}],"providerMetadata":{"orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","shortName":"mozilla","dateUpdated":"2025-12-18T15:23:09.123Z"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T07:31:06.470Z"},"title":"CVE Program Container","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1847397","tags":["x_transferred"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-34/","tags":["x_transferred"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-36/","tags":["x_transferred"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-38/","tags":["x_transferred"]}]},{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-09-19T20:02:33.505149Z","id":"CVE-2023-4577","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-09-19T20:02:40.096Z"}}]}}