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CVE-2020-1983

Published: 22 April 2020

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.

Priority

Medium

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
libslirp
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal
Released (4.1.0-2ubuntu2)
trusty Does not exist

upstream Needs triage

xenial Does not exist

impish
Released (4.1.0-2ubuntu2)
groovy
Released (4.1.0-2ubuntu2)
hirsute
Released (4.1.0-2ubuntu2)
kinetic
Released (4.1.0-2ubuntu2)
jammy
Released (4.1.0-2ubuntu2)
lunar
Released (4.1.0-2ubuntu2)
mantic
Released (4.1.0-2ubuntu2)
Patches:
upstream: https://gitlab.freedesktop.org/slirp/libslirp/-/commit/9bd6c5913271eabcb7768a58197ed3301fe19f2d
qemu
Launchpad, Ubuntu, Debian
bionic
Released (1:2.11+dfsg-1ubuntu7.26)
eoan
Released (1:4.0+dfsg-0ubuntu9.6)
focal Not vulnerable
(uses system libslirp)
trusty Needs triage

upstream Needs triage

xenial
Released (1:2.5+dfsg-5ubuntu10.44)
impish Not vulnerable
(uses system libslirp)
groovy Not vulnerable
(uses system libslirp)
hirsute Not vulnerable
(uses system libslirp)
kinetic Not vulnerable
(uses system libslirp)
jammy Not vulnerable
(uses system libslirp)
lunar Not vulnerable
(uses system libslirp)
mantic Not vulnerable
(uses system libslirp)
qemu-kvm
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

impish Does not exist

groovy Does not exist

kinetic Does not exist

hirsute Does not exist

jammy Does not exist

lunar Does not exist

mantic Does not exist

slirp4netns
Launchpad, Ubuntu, Debian
upstream Needs triage

bionic Does not exist

eoan Ignored
(end of life)
trusty Does not exist

xenial Does not exist

impish Not vulnerable
(1.0.1-1)
focal Needs triage

groovy Not vulnerable
(1.0.1-1)
kinetic Not vulnerable
(1.0.1-1)
hirsute Not vulnerable
(1.0.1-1)
jammy Not vulnerable
(1.0.1-1)
lunar Not vulnerable
(1.0.1-1)
mantic Not vulnerable
(1.0.1-1)

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Changed
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H