-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Format: 1.8 Date: Thu, 12 May 2022 16:44:49 -0400 Source: waitress Architecture: source Version: 1.0.1-1+deb9u1 Distribution: stretch-security Urgency: medium Maintainer: Andrew Shadura <andrewsh@debian.org> Changed-By: Stefano Rivera <stefanor@debian.org> Closes: 1008013 Changes: waitress (1.0.1-1+deb9u1) stretch-security; urgency=medium . * Non-maintainer upload by the LTS Security Team. * Security updates to fix request smuggling bugs, when combined with another http proxy that interprets requests differently. This can lead to a potential for HTTP request smuggling/splitting whereby Waitress may see two requests while the front-end server only sees a single HTTP message. This can result in cache poisoning or unexpected information disclosure. The specific issues resolved are: - CVE-2019-16785: Only recognise CRLF as a line-terminator, not a plain LF. Before this change waitress could see two requests where the front-end proxy only saw one. - CVE-2019-16786: Waitress would parse the Transfer-Encoding header and only look for a single string value, if that value was not "chunked" it would fall through and use the Content-Length header instead. This could allow for Waitress to treat a single request as multiple requests in the case of HTTP pipelining. - CVE-2019-16789: Specially crafted requests containing special whitespace characters in the Transfer-Encoding header would get parsed by Waitress as being a chunked request, but a front-end server would use the Content-Length instead as the Transfer-Encoding header is considered invalid due to containing invalid characters. If a front-end server does HTTP pipelining to a backend Waitress server this could lead to HTTP request splitting which may lead to potential cache poisoning or unexpected information disclosure. - CVE-2019-16792: If two Content-Length headers are sent in a single request, Waitress would treat the request as having no body, thereby treating the body of the request as a new request in HTTP pipelining. - CVE-2022-24761: There are two classes of vulnerability that may lead to request smuggling that are addressed by this advisory: + The use of Python's int() to parse strings into integers, leading to +10 to be parsed as 10, or 0x01 to be parsed as 1, where as the standard specifies that the string should contain only digits or hex digits. + Waitress does not support chunk extensions, however it was discarding them without validating that they did not contain illegal characters. (Closes: #1008013) Checksums-Sha1: d5b6a80fbdbac73fc04a3919af521980c244b890 1476 waitress_1.0.1-1+deb9u1.dsc 100bfdaf85005cb0edfeed45dbf032e1ae01535e 123963 waitress_1.0.1.orig.tar.gz 4930e9c1958e184723561bb62695b9746d94d8c3 20676 waitress_1.0.1-1+deb9u1.debian.tar.xz 562005f18a6c03726707f1dc5bd8f852797851e2 7434 waitress_1.0.1-1+deb9u1_source.buildinfo Checksums-Sha256: d39d03fb3a6b38a51589fd9271c6e56fc3269d6772b1f9f1608ca0d1a65f2ebc 1476 waitress_1.0.1-1+deb9u1.dsc 35c248756be59339b937206af0de74cbd3a9ff764cb98a0ff0983f74bf057f3b 123963 waitress_1.0.1.orig.tar.gz 6daf9840292ef7c76ac79756b41864fb77e6fb3a8d011c31d215967a16c254dd 20676 waitress_1.0.1-1+deb9u1.debian.tar.xz a990720ead7416e236849fea998ecf2d22889c97e49cf6295242a2ff64fd5bc5 7434 waitress_1.0.1-1+deb9u1_source.buildinfo Files: 2455da2057b328c33f04cb479686b847 1476 python optional waitress_1.0.1-1+deb9u1.dsc f772be86041cbb1302db0d5365d6ff01 123963 python optional waitress_1.0.1.orig.tar.gz 55c5e8adf4f934f1a92c64a1a8cccbb4 20676 python optional waitress_1.0.1-1+deb9u1.debian.tar.xz ae2f053e44e60fe4334273ecbb1273ce 7434 python optional waitress_1.0.1-1+deb9u1_source.buildinfo -----BEGIN PGP SIGNATURE----- iIoEARYKADIWIQTumtb5BSD6EfafSCRHew2wJjpU2AUCYn12QhQcc3RlZmFub3JA ZGViaWFuLm9yZwAKCRBHew2wJjpU2F3vAQC4CkGH5zQnpSbqwhTZtVJDfgOS82oV oeXd6m8ajE3ktQD/c0RweUCDDMfvLTr59540gXneAMMKlZ6cZxVGIsRXUgk= =xV74 -----END PGP SIGNATURE-----
