Vulnerability · Published Jul 9, 2020 · Assigned by redhat
CVE-2020-10756
Medium 6.5
In plain English
A medium-severity security flaw in Slirp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)0.5%top 56.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An out-of-bounds read vulnerability was found in the SLiRP networking implementation of the QEMU emulator. This flaw occurs in the icmp6_send_echoreply() routine while replying to an ICMP echo request, also known as ping. This flaw allows a malicious guest to leak the contents of the host memory, resulting in possible information disclosure. This flaw affects versions of libslirp before 4.3.1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | hivex | 1.3.18-20.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | hivex-devel | 1.3.18-20.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | libguestfs-winsupport | 8.2-1.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | libguestfs-winsupport | 8.2-1.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | libiscsi | 1.18.0-8.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4059 |
| AlmaLinux:8 | libiscsi | 1.18.0-8.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | libiscsi | 1.18.0-8.module_el8.6.0+2880+7d9e3703 | ALSA-2020:4059 |
| AlmaLinux:8 | libiscsi | 1.18.0-8.module_el8.6.0+2880+7d9e3703 | ALSA-2021:1064 |
| AlmaLinux:8 | libiscsi | 1.18.0-8.module_el8.5.0+2608+72063365 | ALSA-2020:4059 |
| AlmaLinux:8 | libiscsi | 1.18.0-8.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | libiscsi-devel | 1.18.0-8.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | libiscsi-devel | 1.18.0-8.module_el8.6.0+2880+7d9e3703 | ALSA-2021:1064 |
| AlmaLinux:8 | libiscsi-devel | 1.18.0-8.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4059 |
| AlmaLinux:8 | libiscsi-devel | 1.18.0-8.module_el8.6.0+2880+7d9e3703 | ALSA-2020:4059 |
| AlmaLinux:8 | libiscsi-devel | 1.18.0-8.module_el8.5.0+2608+72063365 | ALSA-2020:4059 |
| AlmaLinux:8 | libiscsi-devel | 1.18.0-8.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | libiscsi-utils | 1.18.0-8.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | libiscsi-utils | 1.18.0-8.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4059 |
| AlmaLinux:8 | libiscsi-utils | 1.18.0-8.module_el8.6.0+2880+7d9e3703 | ALSA-2020:4059 |
| AlmaLinux:8 | libiscsi-utils | 1.18.0-8.module_el8.5.0+2608+72063365 | ALSA-2020:4059 |
| AlmaLinux:8 | libiscsi-utils | 1.18.0-8.module_el8.6.0+2880+7d9e3703 | ALSA-2021:1064 |
| AlmaLinux:8 | libiscsi-utils | 1.18.0-8.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | libnbd | 1.2.2-1.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | libnbd | 1.2.2-1.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | libnbd-devel | 1.2.2-1.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | libnbd-devel | 1.2.2-1.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | libslirp | 4.3.1-1.module_el8.6.0+2876+9ed4eae2 | ALSA-2020:4694 |
| AlmaLinux:8 | libslirp-devel | 4.3.1-1.module_el8.6.0+2876+9ed4eae2 | ALSA-2020:4694 |
| AlmaLinux:8 | libvirt-dbus | 1.3.0-2.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | libvirt-dbus | 1.3.0-2.module_el8.6.0+2880+7d9e3703 | ALSA-2021:1064 |
| AlmaLinux:8 | libvirt-dbus | 1.3.0-2.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | nbdfuse | 1.2.2-1.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | nbdfuse | 1.2.2-1.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | nbdkit | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | nbdkit-bash-completion | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | nbdkit-basic-filters | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | nbdkit-basic-plugins | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | nbdkit-curl-plugin | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | nbdkit-devel | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | nbdkit-example-plugins | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | nbdkit-gzip-plugin | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | nbdkit-linuxdisk-plugin | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | nbdkit-python-plugin | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | nbdkit-server | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | nbdkit-ssh-plugin | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | nbdkit-vddk-plugin | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | nbdkit-xz-filter | 1.16.2-4.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | netcf | 0.2.8-12.module_el8.6.0+2880+7d9e3703 | ALSA-2021:1064 |
| AlmaLinux:8 | netcf | 0.2.8-12.module_el8.5.0+2608+72063365 | ALSA-2020:4059 |
| AlmaLinux:8 | netcf | 0.2.8-12.module_el8.6.0+2880+7d9e3703 | ALSA-2020:4059 |
| AlmaLinux:8 | netcf | 0.2.8-12.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4059 |
| AlmaLinux:8 | netcf | 0.2.8-12.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | netcf | 0.2.8-12.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | netcf-devel | 0.2.8-12.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | netcf-devel | 0.2.8-12.module_el8.6.0+2880+7d9e3703 | ALSA-2020:4059 |
| AlmaLinux:8 | netcf-devel | 0.2.8-12.module_el8.5.0+2608+72063365 | ALSA-2020:4059 |
| AlmaLinux:8 | netcf-devel | 0.2.8-12.module_el8.6.0+2880+7d9e3703 | ALSA-2021:1064 |
| AlmaLinux:8 | netcf-devel | 0.2.8-12.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4059 |
| AlmaLinux:8 | netcf-devel | 0.2.8-12.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | netcf-libs | 0.2.8-12.module_el8.6.0+2880+7d9e3703 | ALSA-2020:4059 |
| AlmaLinux:8 | netcf-libs | 0.2.8-12.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | netcf-libs | 0.2.8-12.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | netcf-libs | 0.2.8-12.module_el8.6.0+2880+7d9e3703 | ALSA-2021:1064 |
| AlmaLinux:8 | netcf-libs | 0.2.8-12.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4059 |
| AlmaLinux:8 | netcf-libs | 0.2.8-12.module_el8.5.0+2608+72063365 | ALSA-2020:4059 |
| AlmaLinux:8 | ocaml-hivex | 1.3.18-20.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | ocaml-hivex-devel | 1.3.18-20.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | ocaml-libguestfs | 1:1.40.2-25.module_el8.3.0+2048+e7a0a3ea.alma | ALSA-2021:1064 |
| AlmaLinux:8 | ocaml-libguestfs-devel | 1:1.40.2-25.module_el8.3.0+2048+e7a0a3ea.alma | ALSA-2021:1064 |
| AlmaLinux:8 | ocaml-libnbd | 1.2.2-1.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | ocaml-libnbd-devel | 1.2.2-1.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | perl-Sys-Virt | 6.0.0-1.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | perl-Sys-Virt | 6.0.0-1.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | perl-hivex | 1.3.18-20.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | python-podman-api | 1.2.0-0.2.gitd0a45fe.module_el8.5.0+2635+e4386a39 | ALSA-2020:4694 |
| AlmaLinux:8 | python-podman-api | 1.2.0-0.2.gitd0a45fe.module_el8.5.0+108+00865455 | ALSA-2020:4694 |
| AlmaLinux:8 | python3-hivex | 1.3.18-20.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | python3-libnbd | 1.2.2-1.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | python3-libnbd | 1.2.2-1.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | python3-libvirt | 6.0.0-1.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | python3-libvirt | 6.0.0-1.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | ruby-hivex | 1.3.18-20.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | seabios | 1.13.0-2.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | seabios-bin | 1.13.0-2.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | seavgabios-bin | 1.13.0-2.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | sgabios | 1:0.20170427git-3.module_el8.5.0+2608+72063365 | ALSA-2020:4059 |
| AlmaLinux:8 | sgabios | 1:0.20170427git-3.module_el8.3.0+2048+e7a0a3ea | ALSA-2020:4059 |
| AlmaLinux:8 | sgabios | 1:0.20170427git-3.module_el8.3.0+2048+e7a0a3ea | ALSA-2021:1064 |
| AlmaLinux:8 | sgabios | 1:0.20170427git-3.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | sgabios-bin | 1:0.20170427git-3.module_el8.6.0+2880+7d9e3703 | ALSA-2020:4059 |
| AlmaLinux:8 | sgabios-bin | 1:0.20170427git-3.module_el8.5.0+2608+72063365 | ALSA-2020:4059 |
| AlmaLinux:8 | sgabios-bin | 1:0.20170427git-3.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | sgabios-bin | 1:0.20170427git-3.module_el8.6.0+2880+7d9e3703 | ALSA-2021:1064 |
| AlmaLinux:8 | supermin | 5.1.19-10.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| AlmaLinux:8 | supermin-devel | 5.1.19-10.module_el8.5.0+2608+72063365 | ALSA-2021:1064 |
| Alpine:v3.20 | libslirp | 4.3.1-r0 | ALPINE-CVE-2020-10756 |
| Alpine:v3.21 | libslirp | 4.3.1-r0 | ALPINE-CVE-2020-10756 |
| Alpine:v3.22 | libslirp | 4.3.1-r0 | ALPINE-CVE-2020-10756 |
| Alpine:v3.23 | libslirp | 4.3.1-r0 | ALPINE-CVE-2020-10756 |
| Alpine:v3.24 | libslirp | 4.3.1-r0 | ALPINE-CVE-2020-10756 |
| Debian:12 | libslirp | 4.3.1-1 | DEBIAN-CVE-2020-10756 |
| Debian:13 | libslirp | 4.3.1-1 | DEBIAN-CVE-2020-10756 |
| Debian:14 | libslirp | 4.3.1-1 | DEBIAN-CVE-2020-10756 |
| Debian:12 | qemu | 1:4.1-2 | DEBIAN-CVE-2020-10756 |
| Debian:13 | qemu | 1:4.1-2 | DEBIAN-CVE-2020-10756 |
| Debian:14 | qemu | 1:4.1-2 | DEBIAN-CVE-2020-10756 |
| Debian:12 | slirp4netns | 1.0.1-1 | DEBIAN-CVE-2020-10756 |
| Debian:13 | slirp4netns | 1.0.1-1 | DEBIAN-CVE-2020-10756 |
| Debian:14 | slirp4netns | 1.0.1-1 | DEBIAN-CVE-2020-10756 |
| Rocky Linux:8 | libiscsi | 0:1.18.0-8.module+el8.6.0+847+b490afdd | RLSA-2020:4059 |
| Rocky Linux:8 | libiscsi | 0:1.18.0-8.module+el8.4.0+534+4680a14e | RLSA-2020:4059 |
| Rocky Linux:8 | libiscsi | 0:1.18.0-8.module+el8.7.0+1084+97b81f61 | RLSA-2020:4059 |
| Rocky Linux:8 | libslirp | 0:4.3.1-1.module+el8.5.0+709+440d5e7e | RLSA-2020:4694 |
| Rocky Linux:8 | libslirp | 0:4.3.1-1.module+el8.6.0+783+10209741 | RLSA-2020:4694 |
| Rocky Linux:8 | libslirp | 0:4.3.1-1.module+el8.4.0+556+40122d08 | RLSA-2020:4694 |
| Rocky Linux:8 | libslirp | 0:4.3.1-1.module+el8.7.0+1076+9b1c11c1 | RLSA-2020:4694 |
| Rocky Linux:8 | netcf | 0:0.2.8-12.module+el8.6.0+847+b490afdd | RLSA-2020:4059 |
| Rocky Linux:8 | netcf | 0:0.2.8-12.module+el8.7.0+1084+97b81f61 | RLSA-2020:4059 |
| Rocky Linux:8 | netcf | 0:0.2.8-12.module+el8.4.0+534+4680a14e | RLSA-2020:4059 |
| Rocky Linux:8 | python-podman-api | 0:1.2.0-0.2.gitd0a45fe.module+el8.5.0+770+e2f49861 | RLSA-2020:4694 |
| Rocky Linux:8 | python-podman-api | 0:1.2.0-0.2.gitd0a45fe.module+el8.4.0+559+c02fa3b2 | RLSA-2020:4694 |
| Rocky Linux:8 | python-podman-api | 0:1.2.0-0.2.gitd0a45fe.module+el8.5.0+708+6758137d | RLSA-2020:4694 |
| Rocky Linux:8 | sgabios | 1:0.20170427git-3.module+el8.7.0+1084+97b81f61 | RLSA-2020:4059 |
| Rocky Linux:8 | sgabios | 1:0.20170427git-3.module+el8.4.0+534+4680a14e | RLSA-2020:4059 |
| Rocky Linux:8 | sgabios | 1:0.20170427git-3.module+el8.6.0+847+b490afdd | RLSA-2020:4059 |
| Rocky Linux:8 | toolbox | 0:0.0.8-1.module+el8.4.0+556+40122d08 | RLSA-2020:4694 |
Affected products (as reported)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1835986 x_refsource_MISC
- FEDORA-2020-8c0b966c16 vendor-advisory, x_refsource_FEDORA
- openSUSE-SU-2020:0987 vendor-advisory, x_refsource_SUSE
- openSUSE-SU-2020:0994 vendor-advisory, x_refsource_SUSE
- DSA-4728 vendor-advisory, x_refsource_DEBIAN
- [debian-lts-announce] 20200726 [SECURITY] [DLA 2288-1] qemu security update mailing-list, x_refsource_MLIST
- USN-4437-1 vendor-advisory, x_refsource_UBUNTU
- https://www.zerodayinitiative.com/advisories/ZDI-20-1005/ x_refsource_MISC
- USN-4467-1 vendor-advisory, x_refsource_UBUNTU
- https://security.netapp.com/advisory/ntap-20201001-0001/ x_refsource_CONFIRM