发布于3月6日3月6日 Members Red Hat: CVE-2022-41725: denial of service from excessive resource consumption (Multiple Advisories) Severity 8 CVSS (AV:N/AC:L/Au:N/C:N/I:N/A:C) Published 02/28/2023 Created 05/17/2023 Added 05/17/2023 Modified 01/30/2025 Description A denial of service is possible from excessive resource consumption in net/http and mime/multipart. Multipart form parsing with mime/multipart.Reader.ReadForm can consume largely unlimited amounts of memory and disk files. This also affects form parsing in the net/http package with the Request methods FormFile, FormValue, ParseMultipartForm, and PostFormValue. ReadForm takes a maxMemory parameter, and is documented as storing "up to maxMemory bytes +10MB (reserved for non-file parts) in memory". File parts which cannot be stored in memory are stored on disk in temporary files. The unconfigurable 10MB reserved for non-file parts is excessively large and can potentially open a denial of service vector on its own. However, ReadForm did not properly account for all memory consumed by a parsed form, such as map entry overhead, part names, and MIME headers, permitting a maliciously crafted form to consume well over 10MB. In addition, ReadForm contained no limit on the number of disk files created, permitting a relatively small request body to create a large number of disk temporary files. With fix, ReadForm now properly accounts for various forms of memory overhead, and should now stay within its documented limit of 10MB + maxMemory bytes of memory consumption. Users should still be aware that this limit is high and may still be hazardous. In addition, ReadForm now creates at most one on-disk temporary file, combining multiple form parts into a single temporary file. The mime/multipart.File interface type's documentation states, "If stored on disk, the File's underlying concrete type will be an *os.File.". This is no longer the case when a form contains more than one file part, due to this coalescing of parts into a single file. The previous behavior of using distinct files for each form part may be reenabled with the environment variable GODEBUG=multipartfiles=distinct. Users should be aware that multipart.ReadForm and the http.Request methods that call it do not limit the amount of disk consumed by temporary files. Callers can limit the size of form data with http.MaxBytesReader. Solution(s) redhat-upgrade-aardvark-dns redhat-upgrade-buildah redhat-upgrade-buildah-debuginfo redhat-upgrade-buildah-debugsource redhat-upgrade-buildah-tests redhat-upgrade-buildah-tests-debuginfo redhat-upgrade-cockpit-podman redhat-upgrade-conmon redhat-upgrade-conmon-debuginfo redhat-upgrade-conmon-debugsource redhat-upgrade-container-selinux redhat-upgrade-containernetworking-plugins redhat-upgrade-containernetworking-plugins-debuginfo redhat-upgrade-containernetworking-plugins-debugsource redhat-upgrade-containers-common redhat-upgrade-crit redhat-upgrade-criu redhat-upgrade-criu-debuginfo redhat-upgrade-criu-debugsource redhat-upgrade-criu-devel redhat-upgrade-criu-libs redhat-upgrade-criu-libs-debuginfo redhat-upgrade-crun redhat-upgrade-crun-debuginfo redhat-upgrade-crun-debugsource redhat-upgrade-delve redhat-upgrade-delve-debuginfo redhat-upgrade-delve-debugsource redhat-upgrade-fuse-overlayfs redhat-upgrade-fuse-overlayfs-debuginfo redhat-upgrade-fuse-overlayfs-debugsource redhat-upgrade-go-toolset redhat-upgrade-golang redhat-upgrade-golang-bin redhat-upgrade-golang-docs redhat-upgrade-golang-misc redhat-upgrade-golang-race redhat-upgrade-golang-src redhat-upgrade-golang-tests redhat-upgrade-libslirp redhat-upgrade-libslirp-debuginfo redhat-upgrade-libslirp-debugsource redhat-upgrade-libslirp-devel redhat-upgrade-netavark redhat-upgrade-oci-seccomp-bpf-hook redhat-upgrade-oci-seccomp-bpf-hook-debuginfo redhat-upgrade-oci-seccomp-bpf-hook-debugsource redhat-upgrade-podman redhat-upgrade-podman-catatonit redhat-upgrade-podman-catatonit-debuginfo redhat-upgrade-podman-debuginfo redhat-upgrade-podman-debugsource redhat-upgrade-podman-docker redhat-upgrade-podman-gvproxy redhat-upgrade-podman-gvproxy-debuginfo redhat-upgrade-podman-plugins redhat-upgrade-podman-plugins-debuginfo redhat-upgrade-podman-remote redhat-upgrade-podman-remote-debuginfo redhat-upgrade-podman-tests redhat-upgrade-python3-criu redhat-upgrade-python3-podman redhat-upgrade-runc redhat-upgrade-runc-debuginfo redhat-upgrade-runc-debugsource redhat-upgrade-skopeo redhat-upgrade-skopeo-debuginfo redhat-upgrade-skopeo-debugsource redhat-upgrade-skopeo-tests redhat-upgrade-slirp4netns redhat-upgrade-slirp4netns-debuginfo redhat-upgrade-slirp4netns-debugsource redhat-upgrade-toolbox redhat-upgrade-toolbox-debuginfo redhat-upgrade-toolbox-debugsource redhat-upgrade-toolbox-tests redhat-upgrade-udica References CVE-2022-41725 RHSA-2023:3083 RHSA-2023:6346 RHSA-2023:6363 RHSA-2023:6402 RHSA-2023:6473 RHSA-2023:6474 RHSA-2023:6938 RHSA-2023:6939 View more
