CVE-2020-10756
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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.51% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 43.2% of scored records. A rank, not a probability.
- NVD base score
- 6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2020-07-09 15:34Z6 YR AGO
- Last updated
- 2024-08-04 11:14Z2 YR AGO
- Reserved
- 2020-03-20
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-125Out-of-bounds ReadBase
- Data version
- 5.1
- Document digest
- 5e6816a7b64fff4ea2f3db7aa4ea923ceae4a609a195a443a1fde4236c677693
05 Affected products
06 References
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1835986
- lists.fedoraproject.orgFEDORA-2020-8c0b966c16https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYTZ32P67PZER6P7TW6FQK3SZRKQLVEI/
- lists.opensuse.orgopenSUSE-SU-2020:0987http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00035.html
- lists.opensuse.orgopenSUSE-SU-2020:0994http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00040.html
- www.debian.orgDSA-4728https://www.debian.org/security/2020/dsa-4728
- lists.debian.org[debian-lts-announce] 20200726 [SECURITY] [DLA 2288-1] qemu security updatehttps://lists.debian.org/debian-lts-announce/2020/07/msg00020.html
- usn.ubuntu.comUSN-4437-1https://usn.ubuntu.com/4437-1/
- www.zerodayinitiative.comhttps://www.zerodayinitiative.com/advisories/ZDI-20-1005/
- usn.ubuntu.comUSN-4467-1https://usn.ubuntu.com/4467-1/
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20201001-0001/
07 Fixed in
AlmaLinux 8
- hivex Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- hivex-devel Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- libguestfs-winsupport Fixed
A version is affected if any line below covers it.
- Affected before 8.2-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 8.2-1.module_el8.5.0+2608+72063365
- libiscsi Fixed
A version is affected if any line below covers it.
- Affected before 1.18.0-8.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.18.0-8.module_el8.5.0+2608+72063365
- Affected before 1.18.0-8.module_el8.6.0+2880+7d9e3703
- libiscsi-devel Fixed
A version is affected if any line below covers it.
- Affected before 1.18.0-8.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.18.0-8.module_el8.5.0+2608+72063365
- Affected before 1.18.0-8.module_el8.6.0+2880+7d9e3703
- libiscsi-utils Fixed
A version is affected if any line below covers it.
- Affected before 1.18.0-8.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.18.0-8.module_el8.5.0+2608+72063365
- Affected before 1.18.0-8.module_el8.6.0+2880+7d9e3703
- libnbd Fixed
A version is affected if any line below covers it.
- Affected before 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.2.2-1.module_el8.5.0+2608+72063365
- libnbd-devel Fixed
A version is affected if any line below covers it.
- Affected before 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.2.2-1.module_el8.5.0+2608+72063365
- libslirp Fixed in 4.3.1-1.module_el8.6.0+2876+9ed4eae2
- libslirp-devel Fixed in 4.3.1-1.module_el8.6.0+2876+9ed4eae2
- libvirt-dbus Fixed
A version is affected if any line below covers it.
- Affected before 1.3.0-2.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.3.0-2.module_el8.5.0+2608+72063365
- Affected before 1.3.0-2.module_el8.6.0+2880+7d9e3703
- nbdfuse Fixed
A version is affected if any line below covers it.
- Affected before 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.2.2-1.module_el8.5.0+2608+72063365
- nbdkit Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-bash-completion Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-basic-filters Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-basic-plugins Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-curl-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-devel Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-example-plugins Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-gzip-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-linuxdisk-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-python-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-server Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-ssh-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-vddk-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-xz-filter Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- netcf Fixed
A version is affected if any line below covers it.
- Affected before 0.2.8-12.module_el8.3.0+2048+e7a0a3ea
- Affected before 0.2.8-12.module_el8.5.0+2608+72063365
- Affected before 0.2.8-12.module_el8.6.0+2880+7d9e3703
- netcf-devel Fixed
A version is affected if any line below covers it.
- Affected before 0.2.8-12.module_el8.3.0+2048+e7a0a3ea
- Affected before 0.2.8-12.module_el8.5.0+2608+72063365
- Affected before 0.2.8-12.module_el8.6.0+2880+7d9e3703
- netcf-libs Fixed
A version is affected if any line below covers it.
- Affected before 0.2.8-12.module_el8.3.0+2048+e7a0a3ea
- Affected before 0.2.8-12.module_el8.5.0+2608+72063365
- Affected before 0.2.8-12.module_el8.6.0+2880+7d9e3703
- ocaml-hivex Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- ocaml-hivex-devel Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- ocaml-libguestfs Fixed in 1:1.40.2-25.module_el8.3.0+2048+e7a0a3ea.alma
- ocaml-libguestfs-devel Fixed in 1:1.40.2-25.module_el8.3.0+2048+e7a0a3ea.alma
- ocaml-libnbd Fixed in 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- ocaml-libnbd-devel Fixed in 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- perl-Sys-Virt Fixed
A version is affected if any line below covers it.
- Affected before 6.0.0-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 6.0.0-1.module_el8.5.0+2608+72063365
- perl-hivex Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- python-podman-api Fixed
A version is affected if any line below covers it.
- Affected before 1.2.0-0.2.gitd0a45fe.module_el8.5.0+108+00865455
- Affected before 1.2.0-0.2.gitd0a45fe.module_el8.5.0+2635+e4386a39
- python3-hivex Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- python3-libnbd Fixed
A version is affected if any line below covers it.
- Affected before 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.2.2-1.module_el8.5.0+2608+72063365
9 further packages in AlmaLinux 8 not shown (first 40 listed).
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- hivex Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- hivex-devel Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- libguestfs-winsupport Fixed
A version is affected if any line below covers it.
- Affected before 8.2-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 8.2-1.module_el8.5.0+2608+72063365
- libiscsi Fixed
A version is affected if any line below covers it.
- Affected before 1.18.0-8.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.18.0-8.module_el8.5.0+2608+72063365
- Affected before 1.18.0-8.module_el8.6.0+2880+7d9e3703
- libiscsi-devel Fixed
A version is affected if any line below covers it.
- Affected before 1.18.0-8.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.18.0-8.module_el8.5.0+2608+72063365
- Affected before 1.18.0-8.module_el8.6.0+2880+7d9e3703
- libiscsi-utils Fixed
A version is affected if any line below covers it.
- Affected before 1.18.0-8.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.18.0-8.module_el8.5.0+2608+72063365
- Affected before 1.18.0-8.module_el8.6.0+2880+7d9e3703
- libnbd Fixed
A version is affected if any line below covers it.
- Affected before 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.2.2-1.module_el8.5.0+2608+72063365
- libnbd-devel Fixed
A version is affected if any line below covers it.
- Affected before 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.2.2-1.module_el8.5.0+2608+72063365
- libslirp Fixed in 4.3.1-1.module_el8.6.0+2876+9ed4eae2
- libslirp-devel Fixed in 4.3.1-1.module_el8.6.0+2876+9ed4eae2
- libvirt-dbus Fixed
A version is affected if any line below covers it.
- Affected before 1.3.0-2.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.3.0-2.module_el8.5.0+2608+72063365
- Affected before 1.3.0-2.module_el8.6.0+2880+7d9e3703
- nbdfuse Fixed
A version is affected if any line below covers it.
- Affected before 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.2.2-1.module_el8.5.0+2608+72063365
- nbdkit Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-bash-completion Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-basic-filters Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-basic-plugins Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-curl-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-devel Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-example-plugins Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-gzip-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-linuxdisk-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-python-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-server Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-ssh-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-vddk-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-xz-filter Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- netcf Fixed
A version is affected if any line below covers it.
- Affected before 0.2.8-12.module_el8.3.0+2048+e7a0a3ea
- Affected before 0.2.8-12.module_el8.5.0+2608+72063365
- Affected before 0.2.8-12.module_el8.6.0+2880+7d9e3703
- netcf-devel Fixed
A version is affected if any line below covers it.
- Affected before 0.2.8-12.module_el8.3.0+2048+e7a0a3ea
- Affected before 0.2.8-12.module_el8.5.0+2608+72063365
- Affected before 0.2.8-12.module_el8.6.0+2880+7d9e3703
- netcf-libs Fixed
A version is affected if any line below covers it.
- Affected before 0.2.8-12.module_el8.3.0+2048+e7a0a3ea
- Affected before 0.2.8-12.module_el8.5.0+2608+72063365
- Affected before 0.2.8-12.module_el8.6.0+2880+7d9e3703
- ocaml-hivex Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- ocaml-hivex-devel Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- ocaml-libguestfs Fixed in 1:1.40.2-25.module_el8.3.0+2048+e7a0a3ea.alma
- ocaml-libguestfs-devel Fixed in 1:1.40.2-25.module_el8.3.0+2048+e7a0a3ea.alma
- ocaml-libnbd Fixed in 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- ocaml-libnbd-devel Fixed in 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- perl-Sys-Virt Fixed
A version is affected if any line below covers it.
- Affected before 6.0.0-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 6.0.0-1.module_el8.5.0+2608+72063365
- perl-hivex Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- python-podman-api Fixed
A version is affected if any line below covers it.
- Affected before 1.2.0-0.2.gitd0a45fe.module_el8.5.0+108+00865455
- Affected before 1.2.0-0.2.gitd0a45fe.module_el8.5.0+2635+e4386a39
- python3-hivex Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- python3-libnbd Fixed
A version is affected if any line below covers it.
- Affected before 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.2.2-1.module_el8.5.0+2608+72063365
9 further packages in CloudLinux 8 not shown (first 40 listed).
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- libslirp Fixed in 4.3.1-1
- qemu Fixed in 1:4.1-2
- slirp4netns Fixed in 1.0.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- libslirp Fixed in 4.3.1-1
- qemu Fixed in 1:4.1-2
- slirp4netns Fixed in 1.0.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- libslirp Fixed in 4.3.1-1
- qemu Fixed in 1:4.1-2
- slirp4netns Fixed in 1.0.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- qemu Fixed in 1:2.11+dfsg-1ubuntu7.31
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- libslirp Fixed in 4.1.0-2ubuntu2.1
- slirp4netns No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.