{"id":"CVE-2023-39326","details":"A malicious HTTP sender can use chunk extensions to cause a receiver reading from a request or response body to read many more bytes from the network than are in the body. A malicious HTTP client can further exploit this to cause a server to automatically read a large amount of data (up to about 1GiB) when a handler fails to read the entire body of a request. Chunk extensions are a little-used HTTP feature which permit including additional metadata in a request or response body sent using the chunked encoding. The net/http chunked encoding reader discards this metadata. A sender can exploit this by inserting a large metadata segment with each byte transferred. The chunk reader now produces an error if the ratio of real body to encoded bytes grows too small.","aliases":["BIT-golang-2023-39326","GO-2023-2382"],"modified":"2026-04-16T04:39:45.978382518Z","published":"2023-12-06T17:15:07.147Z","related":["ALSA-2024:0748","ALSA-2024:0887","ALSA-2024:1131","ALSA-2024:1149","ALSA-2024:2160","ALSA-2024:2193","ALSA-2024:2245","ALSA-2024:2272","CGA-68mx-h7cx-55qw","SUSE-SU-2023:4708-1","SUSE-SU-2023:4709-1","SUSE-SU-2023:4930-1","SUSE-SU-2023:4931-1","openSUSE-SU-2024:13491-1","openSUSE-SU-2024:13492-1"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UIU6HOGV6RRIKWM57LOXQA75BGZSIH6G/"},{"type":"ADVISORY","url":"https://groups.google.com/g/golang-dev/c/6ypN5EjibjM/m/KmLVYH_uAgAJ"},{"type":"FIX","url":"https://pkg.go.dev/vuln/GO-2023-2382"},{"type":"FIX","url":"https://go.dev/cl/547335"},{"type":"FIX","url":"https://go.dev/issue/64433"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/golang/go","events":[{"introduced":"0"},{"fixed":"97c8ff8d53759e7a82b1862403df1694f2b6e073"},{"introduced":"0"},{"fixed":"6018ad99a4a951581b2d846a8ccd6f1d4e74fd11"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"1.20.12"},{"introduced":"1.21.0-0"},{"fixed":"1.21.5"}]}}],"versions":["go1.10beta1","go1.10beta2","go1.10rc1","go1.10rc2","go1.11beta1","go1.11beta2","go1.11beta3","go1.12beta1","go1.12beta2","go1.13beta1","go1.14beta1","go1.15beta1","go1.16beta1","go1.17beta1","go1.18beta1","go1.18beta2","go1.19beta1","go1.20","go1.20.1","go1.20.10","go1.20.11","go1.20.2","go1.20.3","go1.20.4","go1.20.5","go1.20.6","go1.20.7","go1.20.8","go1.20.9","go1.20rc1","go1.20rc2","go1.20rc3","go1.21.0","go1.21.1","go1.21.2","go1.21.3","go1.21.4","go1.21rc1","go1.21rc2","go1.21rc3","go1.21rc4","go1.3beta1","go1.3beta2","go1.4beta1","go1.5beta1","go1.5beta2","go1.5beta3","go1.6beta1","go1.6beta2","go1.7beta1","go1.7beta2","go1.7rc1","go1.7rc2","go1.7rc3","go1.7rc4","go1.8beta1","go1.8beta2","go1.9beta1","go1.9beta2","release.r56","weekly","weekly.2009-11-06","weekly.2009-11-10","weekly.2009-11-10.1","weekly.2009-11-12","weekly.2009-11-17","weekly.2009-12-07","weekly.2009-12-09","weekly.2009-12-22","weekly.2010-01-05","weekly.2010-01-13","weekly.2010-01-27","weekly.2010-02-04","weekly.2010-02-17","weekly.2010-02-23","weekly.2010-03-04","weekly.2010-03-15","weekly.2010-03-22","weekly.2010-03-30","weekly.2010-04-13","weekly.2010-04-27","weekly.2010-05-04","weekly.2010-05-27","weekly.2010-06-09","weekly.2010-06-21","weekly.2010-07-01","weekly.2010-07-14","weekly.2010-07-29","weekly.2010-08-04","weekly.2010-08-11","weekly.2010-08-25","weekly.2010-09-06","weekly.2010-09-15","weekly.2010-09-22","weekly.2010-09-29","weekly.2010-10-13","weekly.2010-10-13.1","weekly.2010-10-20","weekly.2010-10-27","weekly.2010-11-02","weekly.2010-11-10","weekly.2010-11-23","weekly.2010-12-02","weekly.2010-12-08","weekly.2010-12-15","weekly.2010-12-15.1","weekly.2010-12-22","weekly.2011-01-06","weekly.2011-01-12","weekly.2011-01-19","weekly.2011-01-20","weekly.2011-02-01","weekly.2011-02-01.1","weekly.2011-02-15","weekly.2011-02-24","weekly.2011-03-07","weekly.2011-03-07.1","weekly.2011-03-15","weekly.2011-03-28","weekly.2011-04-04","weekly.2011-04-13","weekly.2011-04-27","weekly.2011-05-22","weekly.2011-06-02","weekly.2011-06-09","weekly.2011-06-16","weekly.2011-06-23","weekly.2011-07-07","weekly.2011-07-19","weekly.2011-07-29","weekly.2011-08-10","weekly.2011-08-17","weekly.2011-09-01","weekly.2011-09-07","weekly.2011-09-16","weekly.2011-09-21","weekly.2011-10-06","weekly.2011-10-18","weekly.2011-10-25","weekly.2011-10-26","weekly.2011-11-01","weekly.2011-11-02","weekly.2011-11-08","weekly.2011-11-09","weekly.2011-11-18","weekly.2011-12-01","weekly.2011-12-02","weekly.2011-12-06","weekly.2011-12-14","weekly.2011-12-22","weekly.2012-01-15","weekly.2012-01-20","weekly.2012-01-27","weekly.2012-02-07","weekly.2012-02-14","weekly.2012-02-22","weekly.2012-03-04","weekly.2012-03-13","weekly.2012-03-22","weekly.2012-03-27"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-39326.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"}]}