Vulnerability · Published Apr 22, 2020 · Assigned by palo_alto
CVE-2020-1983libslirp: use after free vulnerability cause a denial of service.
High 7.5
In plain English
A high-severity use-after-free in libslirp from slirp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.4% (higher than 84% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)2.4%top 16.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A use after free vulnerability in ip_reass() in ip_input.c of libslirp 4.2.0 and prior releases allows crafted packets to cause a denial of service.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | hivex | 1.3.18-20.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | hivex-devel | 1.3.18-20.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libguestfs-winsupport | 8.2-1.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libguestfs-winsupport | 8.2-1.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | libiscsi | 1.18.0-8.module_el8.6.0+2880+7d9e3703 | ALSA-2020:4676 |
| AlmaLinux:8 | libiscsi | 1.18.0-8.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | libiscsi | 1.18.0-8.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libiscsi-devel | 1.18.0-8.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libiscsi-devel | 1.18.0-8.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | libiscsi-devel | 1.18.0-8.module_el8.6.0+2880+7d9e3703 | ALSA-2020:4676 |
| AlmaLinux:8 | libiscsi-utils | 1.18.0-8.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libiscsi-utils | 1.18.0-8.module_el8.6.0+2880+7d9e3703 | ALSA-2020:4676 |
| AlmaLinux:8 | libiscsi-utils | 1.18.0-8.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | libnbd | 1.2.2-1.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | libnbd | 1.2.2-1.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libnbd-devel | 1.2.2-1.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libnbd-devel | 1.2.2-1.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-admin | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-bash-completion | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-client | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-daemon | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-daemon-config-network | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-daemon-config-nwfilter | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-daemon-driver-interface | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-daemon-driver-network | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-daemon-driver-nodedev | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-daemon-driver-nwfilter | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-daemon-driver-secret | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-daemon-driver-storage | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-daemon-driver-storage-core | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-daemon-driver-storage-disk | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-daemon-driver-storage-iscsi | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-daemon-driver-storage-iscsi-direct | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-daemon-driver-storage-logical | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-daemon-driver-storage-mpath | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-daemon-driver-storage-rbd | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-daemon-driver-storage-scsi | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-dbus | 1.3.0-2.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-dbus | 1.3.0-2.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-dbus | 1.3.0-2.module_el8.6.0+2880+7d9e3703 | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-devel | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-docs | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-libs | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | libvirt-nss | 6.0.0-28.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | nbdfuse | 1.2.2-1.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | nbdfuse | 1.2.2-1.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | nbdkit | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | nbdkit-bash-completion | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | nbdkit-basic-filters | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | nbdkit-basic-plugins | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | nbdkit-curl-plugin | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | nbdkit-devel | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | nbdkit-example-plugins | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | nbdkit-gzip-plugin | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | nbdkit-linuxdisk-plugin | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | nbdkit-python-plugin | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | nbdkit-server | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | nbdkit-ssh-plugin | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | nbdkit-vddk-plugin | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | nbdkit-xz-filter | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | netcf | 0.2.8-12.module_el8.6.0+2880+7d9e3703 | ALSA-2020:4676 |
| AlmaLinux:8 | netcf | 0.2.8-12.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | netcf | 0.2.8-12.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | netcf-devel | 0.2.8-12.module_el8.6.0+2880+7d9e3703 | ALSA-2020:4676 |
| AlmaLinux:8 | netcf-devel | 0.2.8-12.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | netcf-devel | 0.2.8-12.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | netcf-libs | 0.2.8-12.module_el8.6.0+2880+7d9e3703 | ALSA-2020:4676 |
| AlmaLinux:8 | netcf-libs | 0.2.8-12.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | netcf-libs | 0.2.8-12.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | ocaml-hivex | 1.3.18-20.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | ocaml-hivex-devel | 1.3.18-20.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | ocaml-libguestfs | 1:1.40.2-25.module_el8.3.0+2048+e7a0a3ea.alma | ALSA-2020:4676 |
| AlmaLinux:8 | ocaml-libguestfs-devel | 1:1.40.2-25.module_el8.3.0+2048+e7a0a3ea.alma | ALSA-2020:4676 |
| AlmaLinux:8 | ocaml-libnbd | 1.2.2-1.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | ocaml-libnbd-devel | 1.2.2-1.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | perl-Sys-Virt | 6.0.0-1.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | perl-Sys-Virt | 6.0.0-1.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | perl-hivex | 1.3.18-20.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | python-podman-api | 1.2.0-0.2.gitd0a45fe.module_el8.5.0+2635+e4386a39 | ALSA-2020:3053 |
| AlmaLinux:8 | python-podman-api | 1.2.0-0.2.gitd0a45fe.module_el8.5.0+108+00865455 | ALSA-2020:3053 |
| AlmaLinux:8 | python3-hivex | 1.3.18-20.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | python3-libnbd | 1.2.2-1.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | python3-libnbd | 1.2.2-1.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | python3-libvirt | 6.0.0-1.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | python3-libvirt | 6.0.0-1.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | ruby-hivex | 1.3.18-20.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | runc | 1.0.0-66.rc10.module_el8.5.0+2635+e4386a39 | ALSA-2020:3053 |
| AlmaLinux:8 | runc | 1.0.0-66.rc10.module_el8.5.0+108+00865455 | ALSA-2020:3053 |
| AlmaLinux:8 | seabios | 1.13.0-2.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | seabios-bin | 1.13.0-2.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | seavgabios-bin | 1.13.0-2.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | sgabios | 1:0.20170427git-3.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | sgabios | 1:0.20170427git-3.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4676 |
| AlmaLinux:8 | sgabios-bin | 1:0.20170427git-3.module_el8.6.0+2880+7d9e3703 | ALSA-2020:4676 |
| AlmaLinux:8 | sgabios-bin | 1:0.20170427git-3.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | supermin | 5.1.19-10.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | supermin-devel | 5.1.19-10.module_el8.5.0+2608+72063365 | ALSA-2020:4676 |
| AlmaLinux:8 | toolbox | 0.0.7-1.module_el8.5.0+108+00865455 | ALSA-2020:3053 |
| AlmaLinux:8 | toolbox | 0.0.7-1.module_el8.5.0+2635+e4386a39 | ALSA-2020:3053 |
| AlmaLinux:8 | udica | 0.2.1-2.module_el8.5.0+2635+e4386a39 | ALSA-2020:3053 |
| AlmaLinux:8 | udica | 0.2.1-2.module_el8.5.0+108+00865455 | ALSA-2020:3053 |
| Alpine:v3.20 | libslirp | 4.3.0-r0 | ALPINE-CVE-2020-1983 |
| Alpine:v3.21 | libslirp | 4.3.0-r0 | ALPINE-CVE-2020-1983 |
| Alpine:v3.22 | libslirp | 4.3.0-r0 | ALPINE-CVE-2020-1983 |
| Alpine:v3.23 | libslirp | 4.3.0-r0 | ALPINE-CVE-2020-1983 |
| Alpine:v3.24 | libslirp | 4.3.0-r0 | ALPINE-CVE-2020-1983 |
| Debian:12 | libslirp | 4.2.0-2 | DEBIAN-CVE-2020-1983 |
| Debian:13 | libslirp | 4.2.0-2 | DEBIAN-CVE-2020-1983 |
| Debian:14 | libslirp | 4.2.0-2 | DEBIAN-CVE-2020-1983 |
| Debian:12 | qemu | 1:4.1-2 | DEBIAN-CVE-2020-1983 |
| Debian:13 | qemu | 1:4.1-2 | DEBIAN-CVE-2020-1983 |
| Debian:14 | qemu | 1:4.1-2 | DEBIAN-CVE-2020-1983 |
| Debian:12 | slirp4netns | 1.0.1-1 | DEBIAN-CVE-2020-1983 |
| Debian:13 | slirp4netns | 1.0.1-1 | DEBIAN-CVE-2020-1983 |
| Debian:14 | slirp4netns | 1.0.1-1 | DEBIAN-CVE-2020-1983 |
| Rocky Linux:8 | hivex | 0:1.3.18-20.module+el8.4.0+534+4680a14e | RLSA-2020:4676 |
| Rocky Linux:8 | libguestfs-winsupport | 0:8.2-1.module+el8.4.0+534+4680a14e | RLSA-2020:4676 |
| Rocky Linux:8 | libiscsi | 0:1.18.0-8.module+el8.4.0+534+4680a14e | RLSA-2020:4676 |
| Rocky Linux:8 | libiscsi | 0:1.18.0-8.module+el8.6.0+847+b490afdd | RLSA-2020:4676 |
| Rocky Linux:8 | libiscsi | 0:1.18.0-8.module+el8.7.0+1084+97b81f61 | RLSA-2020:4676 |
| Rocky Linux:8 | libnbd | 0:1.2.2-1.module+el8.4.0+534+4680a14e | RLSA-2020:4676 |
| Rocky Linux:8 | libvirt-dbus | 0:1.3.0-2.module+el8.6.0+847+b490afdd | RLSA-2020:4676 |
| Rocky Linux:8 | libvirt-dbus | 0:1.3.0-2.module+el8.7.0+1084+97b81f61 | RLSA-2020:4676 |
| Rocky Linux:8 | libvirt-dbus | 0:1.3.0-2.module+el8.4.0+534+4680a14e | RLSA-2020:4676 |
| Rocky Linux:8 | libvirt-python | 0:6.0.0-1.module+el8.4.0+534+4680a14e | RLSA-2020:4676 |
| Rocky Linux:8 | nbdkit | 0:1.16.2-4.module+el8.4.0+534+4680a14e | RLSA-2020:4676 |
| Rocky Linux:8 | netcf | 0:0.2.8-12.module+el8.4.0+534+4680a14e | RLSA-2020:4676 |
| Rocky Linux:8 | netcf | 0:0.2.8-12.module+el8.6.0+847+b490afdd | RLSA-2020:4676 |
| Rocky Linux:8 | netcf | 0:0.2.8-12.module+el8.7.0+1084+97b81f61 | RLSA-2020:4676 |
| Rocky Linux:8 | perl-Sys-Virt | 0:6.0.0-1.module+el8.4.0+534+4680a14e | RLSA-2020:4676 |
| Rocky Linux:8 | python-podman-api | 0:1.2.0-0.2.gitd0a45fe.module+el8.4.0+559+c02fa3b2 | RLSA-2020:3053 |
| Rocky Linux:8 | python-podman-api | 0:1.2.0-0.2.gitd0a45fe.module+el8.5.0+770+e2f49861 | RLSA-2020:3053 |
| Rocky Linux:8 | python-podman-api | 0:1.2.0-0.2.gitd0a45fe.module+el8.5.0+708+6758137d | RLSA-2020:3053 |
| Rocky Linux:8 | runc | 0:1.0.0-66.rc10.module+el8.5.0+708+6758137d | RLSA-2020:3053 |
| Rocky Linux:8 | runc | 0:1.0.0-66.rc10.module+el8.5.0+770+e2f49861 | RLSA-2020:3053 |
| Rocky Linux:8 | seabios | 0:1.13.0-2.module+el8.4.0+534+4680a14e | RLSA-2020:4676 |
| Rocky Linux:8 | sgabios | 1:0.20170427git-3.module+el8.6.0+847+b490afdd | RLSA-2020:4676 |
| Rocky Linux:8 | sgabios | 1:0.20170427git-3.module+el8.4.0+534+4680a14e | RLSA-2020:4676 |
| Rocky Linux:8 | sgabios | 1:0.20170427git-3.module+el8.7.0+1084+97b81f61 | RLSA-2020:4676 |
| Rocky Linux:8 | supermin | 0:5.1.19-10.module+el8.4.0+534+4680a14e | RLSA-2020:4676 |
| Rocky Linux:8 | toolbox | 0:0.0.7-1.module+el8.5.0+770+e2f49861 | RLSA-2020:3053 |
| Rocky Linux:8 | toolbox | 0:0.0.7-1.module+el8.5.0+708+6758137d | RLSA-2020:3053 |
| Rocky Linux:8 | toolbox | 0:0.0.7-1.module+el8.4.0+559+c02fa3b2 | RLSA-2020:3053 |
| Rocky Linux:8 | udica | 0:0.2.1-2.module+el8.4.0+559+c02fa3b2 | RLSA-2020:3053 |
| Rocky Linux:8 | udica | 0:0.2.1-2.module+el8.5.0+770+e2f49861 | RLSA-2020:3053 |
| Rocky Linux:8 | udica | 0:0.2.1-2.module+el8.5.0+708+6758137d | RLSA-2020:3053 |
| Ubuntu:22.04:LTS | qemu | 1:6.2+dfsg-2ubuntu6.24 | USN-7094-1 |
| Ubuntu:24.04:LTS | qemu | 1:8.2.2+ds-0ubuntu1.4 | USN-7094-1 |
Affected products (as reported)
Weakness: CWE-416 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://gitlab.freedesktop.org/slirp/libslirp/-/issues/20 x_refsource_MISC
- https://gitlab.freedesktop.org/slirp/libslirp/-/commit/9ac0371bb8c0a40f5d9f82a1c25129660e81df04 x_refsource_MISC
- DSA-4665 vendor-advisory, x_refsource_DEBIAN
- FEDORA-2020-30c45be10c vendor-advisory, x_refsource_FEDORA
- FEDORA-2020-1608d52724 vendor-advisory, x_refsource_FEDORA
- openSUSE-SU-2020:0636 vendor-advisory, x_refsource_SUSE
- USN-4372-1 vendor-advisory, x_refsource_UBUNTU
- openSUSE-SU-2020:0756 vendor-advisory, x_refsource_SUSE
- [debian-lts-announce] 20200629 [SECURITY] [DLA 2262-1] qemu security update mailing-list, x_refsource_MLIST
- [debian-lts-announce] 20200726 [SECURITY] [DLA 2288-1] qemu security update mailing-list, x_refsource_MLIST