CVE-2020-7039 Memory corruption in n/a
Medium 5.6
Published
Updated
Check this codebase for CVE-2020-7039 and fix it if it is affected.
What it is: CVE-2020-7039 is a medium-severity memory corruption vulnerability in Debian Debian Linux, published on 16 Jan 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-7039 in the wild and no public exploit code.
Affected product: Debian Debian Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2020-7039/ (Markdown: https://insights.sbomify.com/CVE-2020-7039/index.md)
Heap-based buffer overflow in libslirp allows attackers to execute arbitrary code or cause denial of service via crafted IRC DCC commands.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-7039?
CVE-2020-7039 is a medium-severity memory corruption vulnerability in Debian Debian Linux, published on 16 Jan 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
tcp_emu in tcp_subr.c in libslirp 4.1.0, as used in QEMU 4.2.0, mismanages memory, as demonstrated by IRC DCC commands in EMU_IRC. This can cause a heap-based buffer overflow or other out-of-bounds access which can lead to a DoS or potential execute arbitrary code.
Weakness: CWE-787
Which versions are affected by CVE-2020-7039?
It affects 4 products.
Linux distribution packages (40)
containernetworking-plugins AlmaLinux:8 | All versions | 0.7.4-4.git9ebe139.module_el8.3.0+2044+12421f43 |
containernetworking-plugins AlmaLinux:8 | All versions | 0.7.4-4.git9ebe139.module_el8.4.0+2496+12421f43 |
containernetworking-plugins AlmaLinux:8 | All versions | 0.7.4-4.git9ebe139.module_el8.5.0+119+9a9ec082 |
containers-common AlmaLinux:8 | All versions | 1:0.1.32-6.git1715c90.module_el8.4.0+2478+12421f43 |
containers-common AlmaLinux:8 | All versions | 1:0.1.32-6.git1715c90.module_el8.4.0+2496+12421f43 |
containers-common AlmaLinux:8 | All versions | 1:0.1.32-6.git1715c90.module_el8.5.0+119+9a9ec082 |
fuse-overlayfs AlmaLinux:8 | All versions | 0.3-5.module_el8.3.0+2044+12421f43 |
fuse-overlayfs AlmaLinux:8 | All versions | 0.3-5.module_el8.4.0+2496+12421f43 |
fuse-overlayfs AlmaLinux:8 | All versions | 0.3-5.module_el8.5.0+119+9a9ec082 |
oci-systemd-hook AlmaLinux:8 | All versions | 1:0.1.15-2.git2d0b8a3.module_el8.3.0+2044+12421f43 |
oci-systemd-hook AlmaLinux:8 | All versions | 1:0.1.15-2.git2d0b8a3.module_el8.4.0+2496+12421f43 |
oci-systemd-hook AlmaLinux:8 | All versions | 1:0.1.15-2.git2d0b8a3.module_el8.5.0+119+9a9ec082 |
oci-umount AlmaLinux:8 | All versions | 2:2.3.4-2.git87f9237.module_el8.3.0+2044+12421f43 |
oci-umount AlmaLinux:8 | All versions | 2:2.3.4-2.git87f9237.module_el8.4.0+2496+12421f43 |
oci-umount AlmaLinux:8 | All versions | 2:2.3.4-2.git87f9237.module_el8.5.0+119+9a9ec082 |
runc AlmaLinux:8 | All versions | 1.0.0-56.rc5.dev.git2abd837.module_el8.3.0+2044+12421f43 |
runc AlmaLinux:8 | All versions | 1.0.0-56.rc5.dev.git2abd837.module_el8.4.0+2496+12421f43 |
runc AlmaLinux:8 | All versions | 1.0.0-56.rc5.dev.git2abd837.module_el8.5.0+119+9a9ec082 |
skopeo AlmaLinux:8 | All versions | 1:0.1.32-6.git1715c90.module_el8.4.0+2478+12421f43 |
skopeo AlmaLinux:8 | All versions | 1:0.1.32-6.git1715c90.module_el8.4.0+2496+12421f43 |
skopeo AlmaLinux:8 | All versions | 1:0.1.32-6.git1715c90.module_el8.5.0+119+9a9ec082 |
qemu-img Red Hat:enterprise_linux:7::client | All versions | 10:1.5.3-173.el7 |
qemu-kvm Red Hat:enterprise_linux:7::client | All versions | 10:1.5.3-173.el7 |
qemu-kvm-common Red Hat:enterprise_linux:7::client | All versions | 10:1.5.3-173.el7 |
qemu-kvm-debuginfo Red Hat:enterprise_linux:7::client | All versions | 10:1.5.3-173.el7 |
qemu-kvm-tools Red Hat:enterprise_linux:7::client | All versions | 10:1.5.3-173.el7 |
qemu-img Red Hat:enterprise_linux:7::computenode | All versions | 10:1.5.3-173.el7 |
qemu-kvm Red Hat:enterprise_linux:7::computenode | All versions | 10:1.5.3-173.el7 |
qemu-kvm-common Red Hat:enterprise_linux:7::computenode | All versions | 10:1.5.3-173.el7 |
qemu-kvm-debuginfo Red Hat:enterprise_linux:7::computenode | All versions | 10:1.5.3-173.el7 |
qemu-kvm-tools Red Hat:enterprise_linux:7::computenode | All versions | 10:1.5.3-173.el7 |
qemu-img Red Hat:enterprise_linux:7::server | All versions | 10:1.5.3-173.el7 |
qemu-kvm Red Hat:enterprise_linux:7::server | All versions | 10:1.5.3-173.el7 |
qemu-kvm-common Red Hat:enterprise_linux:7::server | All versions | 10:1.5.3-173.el7 |
qemu-kvm-debuginfo Red Hat:enterprise_linux:7::server | All versions | 10:1.5.3-173.el7 |
qemu-kvm-tools Red Hat:enterprise_linux:7::server | All versions | 10:1.5.3-173.el7 |
qemu-img Red Hat:enterprise_linux:7::workstation | All versions | 10:1.5.3-173.el7 |
qemu-kvm Red Hat:enterprise_linux:7::workstation | All versions | 10:1.5.3-173.el7 |
qemu-kvm-common Red Hat:enterprise_linux:7::workstation | All versions | 10:1.5.3-173.el7 |
qemu-kvm-debuginfo Red Hat:enterprise_linux:7::workstation | All versions | 10:1.5.3-173.el7 |
Products include Debian Debian Linux, Libslirp Project Libslirp, Opensuse Leap, Qemu Qemu.
How do I fix CVE-2020-7039?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-7039 being exploited?
There is no known exploitation of CVE-2020-7039 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALSA-2020:1360, DEBIAN-CVE-2020-7039, DLA-2076-1, DLA-2090-1, GHSA-fr8m-vw66-8v9r, RHSA-2020:1116 and 4 more.