{"id":"CVE-2005-4077","aliases":["CURL-CVE-2005-4077","DEBIAN-CVE-2005-4077","DSA-919-2","EUVD-2005-4072","GHSA-c4xg-24hh-cq78","RHSA-2005:875"],"status":"published","title":"Multiple off-by-one errors in the cURL library (libcurl) 7.11.2 through 7.15.0 allow local users...","description":"Multiple off-by-one errors in the cURL library (libcurl) 7.11.2 through 7.15.0 allow local users to trigger a buffer overflow and cause a denial of service or bypass PHP security restrictions via certain URLs that (1) are malformed in a way that prevents a terminating null byte from being added to either a hostname or path buffer, or (2) contain a \"?\"  separator in the hostname portion, which causes a \"/\" to be prepended to the resulting string.","severity":{"version":"2.0","score":4.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00516,"percentile":0.44176,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-189"],"published":"2005-12-07T08:00:00Z","modified":"2026-10-24T23:17:46Z","fixes":[{"ecosystem":"Debian:12","package":"curl","fixed_in":["7.15.1-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"curl","fixed_in":["7.15.1-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"curl","fixed_in":["7.15.1-1"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:4::as","package":"curl","fixed_in":["0:7.12.1-8.rhel4"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:4::as","package":"curl-debuginfo","fixed_in":["0:7.12.1-8.rhel4"],"sources":["osv"]},{"ecosystem":"Red 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users to trigger a buffer overflow and cause a denial of service or bypass PHP security restrictions via certain URLs that (1) are malformed in a way that prevents a terminating null byte from being added to either a hostname or path buffer, or (2) contain a \"?\"  separator in the hostname portion, which causes a \"/\" to be prepended to the resulting string.","status":"published","published":"2005-12-08T01:00:00Z","modified":"2024-08-07T23:31:48.962Z","updated_at":"2026-11-02T14:33:38.906611Z"}],"euvd":[{"id":"EUVD-2005-4072","description":"Multiple off-by-one errors in the cURL library (libcurl) 7.11.2 through 7.15.0 allow local users to trigger a buffer overflow and cause a denial of service or bypass PHP security restrictions via certain URLs that (1) are malformed in a way that prevents a terminating null byte from being added to either a hostname or path buffer, or (2) contain a \"?\"  separator in the hostname portion, which causes a \"/\" to be prepended to the resulting string.","status":"published","published":"2005-12-08T01:00:00Z","modified":"2024-08-07T23:31:48Z","updated_at":"2026-11-03T01:15:24.155852Z"}],"ghsa":[{"id":"GHSA-c4xg-24hh-cq78","title":"Multiple off-by-one errors in the cURL library (libcurl) 7.11.2 through 7.15.0 allow local users...","description":"Multiple off-by-one errors in the cURL library (libcurl) 7.11.2 through 7.15.0 allow local users to trigger a buffer overflow and cause a denial of service or bypass PHP security restrictions via certain URLs that (1) are malformed in a way that prevents a terminating null byte from being added to either a hostname or path buffer, or (2) contain a \"?\"  separator in the hostname portion, which causes a \"/\" to be prepended to the resulting string.","status":"published","published":"2022-05-03T03:14:37Z","modified":"2023-02-01T05:01:15Z","updated_at":"2026-11-02T14:49:41.640503Z"}],"nvd":[{"id":"CVE-2005-4077","description":"Multiple off-by-one errors in the cURL library (libcurl) 7.11.2 through 7.15.0 allow local users to trigger a buffer overflow and cause a denial of service or bypass PHP security restrictions via certain URLs that (1) are malformed in a way that prevents a terminating null byte from being added to either a hostname or path buffer, or (2) contain a \"?\"  separator in the hostname portion, which causes a \"/\" to be prepended to the resulting string.","status":"published","published":"2005-12-08T01:03:00Z","modified":"2026-06-16T22:18:10.443Z","cvss":[{"version":"2.0","score":4.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-189"],"updated_at":"2026-11-02T14:00:57.944899Z"}],"osv":[{"id":"CURL-CVE-2005-4077","title":"URL Buffer Overflow","description":"libcurl's URL parser function can overflow a heap based buffer in two ways, if\ngiven a too long URL.\n\nThese overflows happen if you\n\n 1 - pass in a URL with no protocol (like \"http://\") prefix, using no slash\n     and the string is 256 bytes or longer. This leads to a single zero byte\n     overflow of the heap buffer.\n\n 2 - pass in a URL with only a question mark as separator (no slash) between\n     the host and the query part of the URL. This leads to a single zero byte\n     overflow of the heap buffer.\n\nBoth overflows can be made with the same input string, leading to two single\nzero byte overwrites.\n\nThe affected flaw cannot be triggered by a redirect, but the long URL must be\npassed in \"directly\" to libcurl. It makes this a \"local\" problem. Of course,\nlots of programs may still pass in user-provided URLs to libcurl without doing\nmuch syntax checking of their own, allowing a user to exploit this\nvulnerability.","status":"published","published":"2005-12-07T08:00:00Z","modified":"2026-10-24T23:17:46Z","updated_at":"2026-11-02T15:43:55.669514Z"},{"id":"CVE-2005-4077","description":"Multiple off-by-one errors in the cURL library (libcurl) 7.11.2 through 7.15.0 allow local users to trigger a buffer overflow and cause a denial of service or bypass PHP security restrictions via certain URLs that (1) are malformed in a way that prevents a terminating null byte from being added to either a hostname or path buffer, or (2) contain a \"?\"  separator in the hostname portion, which causes a \"/\" to be prepended to the resulting string.","status":"published","published":"2005-12-08T01:03:00Z","modified":"2026-04-10T03:38:15.955138Z","updated_at":"2026-11-02T15:43:56.581247Z"},{"id":"DEBIAN-CVE-2005-4077","description":"Multiple off-by-one errors in the cURL library (libcurl) 7.11.2 through 7.15.0 allow local users to trigger a buffer overflow and cause a denial of service or bypass PHP security restrictions via certain URLs that (1) are malformed in a way that prevents a terminating null byte from being added to either a hostname or path buffer, or (2) contain a \"?\"  separator in the hostname portion, which causes a \"/\" to be prepended to the resulting string.","status":"published","published":"2005-12-08T01:03:00Z","modified":"2026-10-23T03:47:40.892378198Z","updated_at":"2026-11-02T15:45:22.831407Z"},{"id":"DSA-919-2","title":"curl - buffer overflow","status":"published","published":"2005-12-12T00:00:00Z","modified":"2026-03-09T02:10:57.953816Z","updated_at":"2026-11-02T15:46:18.716547Z"},{"id":"RHSA-2005:875","title":"Red Hat Security Advisory: curl security update","status":"published","published":"2024-09-15T16:01:13Z","modified":"2026-06-26T10:04:02Z","updated_at":"2026-11-02T15:52:59.135214Z"}]}}