{"id":"GHSA-hh82-3pmq-7frp","summary":"Netty vulnerable to HTTP Response splitting from assigning header value iterator","details":"### Impact\nWhen calling `DefaultHttpHeaders.set` with an _iterator_ of values (as opposed to a single given value), header value validation was not performed, allowing malicious header values in the iterator to perform [HTTP Response Splitting](https://owasp.org/www-community/attacks/HTTP_Response_Splitting).\n\n### Patches\nThe necessary validation was added in Netty 4.1.86.Final.\n\n### Workarounds\nIntegrators can work around the issue by changing the `DefaultHttpHeaders.set(CharSequence, Iterator\u003c?\u003e)` call, into a `remove()` call, and call `add()` in a loop over the iterator of values.\n\n### References\n[HTTP Response Splitting](https://owasp.org/www-community/attacks/HTTP_Response_Splitting)\n[CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers](https://cwe.mitre.org/data/definitions/113.html)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [[example link to repo](https://github.com/netty/netty)](https://github.com/netty/netty)\n* Email us at [netty-security@googlegroups.com](mailto:netty-security@googlegroups.com)\n","aliases":["CVE-2022-41915"],"modified":"2026-01-15T01:56:39.333168Z","published":"2022-12-12T21:25:44Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2022-12-12T21:25:44Z","nvd_published_at":"2022-12-13T07:15:00Z","cwe_ids":["CWE-113","CWE-436"],"severity":"MODERATE"},"references":[{"type":"WEB","url":"https://github.com/netty/netty/security/advisories/GHSA-hh82-3pmq-7frp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-41915"},{"type":"WEB","url":"https://github.com/netty/netty/issues/13084"},{"type":"WEB","url":"https://github.com/netty/netty/pull/12760"},{"type":"WEB","url":"https://github.com/netty/netty/commit/c37c637f096e7be3dffd36edee3455c8e90cb1b0"},{"type":"WEB","url":"https://github.com/netty/netty/commit/fe18adff1c2b333acb135ab779a3b9ba3295a1c4"},{"type":"WEB","url":"https://github.com/netty/netty"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/01/msg00008.html"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20230113-0004"},{"type":"WEB","url":"https://www.debian.org/security/2023/dsa-5316"}],"affected":[{"package":{"name":"io.netty:netty-codec-http","ecosystem":"Maven","purl":"pkg:maven/io.netty/netty-codec-http"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.1.83.Final"},{"fixed":"4.1.86.Final"}]}],"versions":["4.1.83.Final","4.1.84.Final","4.1.85.Final"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/12/GHSA-hh82-3pmq-7frp/GHSA-hh82-3pmq-7frp.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"}]}