{"id":"CVE-2018-1000005","details":"libcurl 7.49.0 to and including 7.57.0 contains an out bounds read in code handling HTTP/2 trailers. It was reported (https://github.com/curl/curl/pull/2231) that reading an HTTP/2 trailer could mess up future trailers since the stored size was one byte less than required. The problem is that the code that creates HTTP/1-like headers from the HTTP/2 trailer data once appended a string like `:` to the target buffer, while this was recently changed to `: ` (a space was added after the colon) but the following math wasn't updated correspondingly. When accessed, the data is read out of bounds and causes either a crash or that the (too large) data gets passed to client write. This could lead to a denial-of-service situation or an information disclosure if someone has a service that echoes back or uses the trailers for something.","aliases":["CURL-CVE-2018-1000005"],"modified":"2026-05-18T05:50:11.468360841Z","published":"2018-01-24T22:29:00.307Z","related":["openSUSE-SU-2024:10582-1"],"database_specific":{"unresolved_ranges":[{"vendor_product":"canonical:ubuntu_linux","cpes":["cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*","cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*","cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*"],"extracted_events":[{"last_affected":"14.04"},{"last_affected":"16.04"},{"last_affected":"17.10"}],"source":"CPE_FIELD"},{"vendor_product":"debian:debian_linux","cpes":["cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*","cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"],"extracted_events":[{"last_affected":"8.0"},{"last_affected":"9.0"}],"source":"CPE_FIELD"}]},"references":[{"type":"ADVISORY","url":"http://www.securitytracker.com/id/1040273"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:1543"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3554-1/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2018/dsa-4098"},{"type":"FIX","url":"https://curl.haxx.se/docs/adv_2018-824a.html"},{"type":"FIX","url":"https://github.com/curl/curl/pull/2231"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/curl/curl","events":[{"introduced":"67fe54d918a3b42a24cb7f5db81514c10e239735"},{"last_affected":"62c07b5743490ce373910f469abc8cdc759bec2b"}],"database_specific":{"cpe":"cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"7.49.0"},{"last_affected":"7.57.0"}],"source":"CPE_FIELD"}}],"versions":["curl-7_57_0","curl-7_56_1","curl-7_56_0","curl-7_55_1","curl-7_55_0","curl-7_54_1","curl-7_54_0","curl-7_53_1","curl-7_53_0","curl-7_52_1","curl-7_52_0","curl-7_51_0","curl-7_50_3","curl-7_50_2","curl-7_50_1","curl-7_50_0","curl-7_49_1","curl-7_49_0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-1000005.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"}]}