CVE-2019-14378

Published: 29 July 2019

ip_reass in ip_input.c in libslirp 4.0.0 has a heap-based buffer overflow via a large packet because it mishandles a case involving the first fragment.

From the Ubuntu Security Team

It was discovered that a heap-based buffer overflow existed in the SLiRP networking implementation of QEMU. A local attacker in a guest could use this to cause a denial of service or possibly execute arbitrary code in the host.

Notes

Author	Note
mdeslaur	located in slirp/src/ip_input.c in qemu

Priority

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package	Release	Status
android Launchpad, Ubuntu, Debian	bionic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	mantic	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Needs triage
basilisk2 Launchpad, Ubuntu, Debian	bionic	Needs triage
	disco	Ignored (end of life)
	eoan	Ignored (end of life)
	focal	Needs triage
	groovy	Ignored (end of life)
	hirsute	Ignored (end of life)
	impish	Ignored (end of life)
	jammy	Needs triage
	kinetic	Ignored (end of life, was needs-triage)
	lunar	Ignored (end of life, was needs-triage)
	mantic	Needs triage
	trusty	Does not exist
	upstream	Needs triage
	xenial	Needs triage
bochs Launchpad, Ubuntu, Debian	bionic	Needs triage
	disco	Ignored (end of life)
	eoan	Ignored (end of life)
	focal	Needs triage
	groovy	Ignored (end of life)
	hirsute	Ignored (end of life)
	impish	Ignored (end of life)
	jammy	Needs triage
	kinetic	Ignored (end of life, was needs-triage)
	lunar	Ignored (end of life, was needs-triage)
	mantic	Needs triage
	trusty	Does not exist
	upstream	Needs triage
	xenial	Needs triage
fs-uae Launchpad, Ubuntu, Debian	bionic	Needs triage
	disco	Ignored (end of life)
	eoan	Ignored (end of life)
	focal	Needs triage
	groovy	Ignored (end of life)
	hirsute	Ignored (end of life)
	impish	Ignored (end of life)
	jammy	Needs triage
	kinetic	Ignored (end of life, was needs-triage)
	lunar	Ignored (end of life, was needs-triage)
	mantic	Needs triage
	trusty	Does not exist
	upstream	Needs triage
	xenial	Needs triage
libslirp Launchpad, Ubuntu, Debian	bionic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	focal	Not vulnerable (4.1.0-2)
	groovy	Not vulnerable (4.1.0-2)
	hirsute	Not vulnerable (4.1.0-2)
	impish	Not vulnerable (4.1.0-2)
	jammy	Not vulnerable (4.1.0-2)
	kinetic	Not vulnerable (4.1.0-2)
	lunar	Not vulnerable (4.1.0-2)
	mantic	Not vulnerable (4.1.0-2)
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
qemu Launchpad, Ubuntu, Debian	bionic	Released (1:2.11+dfsg-1ubuntu7.20)
	disco	Released (1:3.1+dfsg-2ubuntu3.6)
	eoan	Released (1:4.0+dfsg-0ubuntu9.1)
	focal	Released (1:4.2-1ubuntu1)
	groovy	Released (1:4.2-1ubuntu1)
	hirsute	Released (1:4.2-1ubuntu1)
	impish	Released (1:4.2-1ubuntu1)
	jammy	Released (1:4.2-1ubuntu1)
	kinetic	Released (1:4.2-1ubuntu1)
	lunar	Released (1:4.2-1ubuntu1)
	mantic	Released (1:4.2-1ubuntu1)
	trusty	Released (2.0.0+dfsg-2ubuntu1.47) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (1:4.1-1)
	xenial	Released (1:2.5+dfsg-5ubuntu10.42)
	Patches: upstream: https://git.qemu.org/?p=qemu.git;a=commitdiff;h=c2e03e2aa42d0f4f41deb08c2655503835840afa
qemu-kvm Launchpad, Ubuntu, Debian	bionic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	mantic	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
qemu-kvm-spice Launchpad, Ubuntu, Debian	bionic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	mantic	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
qemu-linaro Launchpad, Ubuntu, Debian	bionic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	mantic	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
slirp Launchpad, Ubuntu, Debian	bionic	Needs triage
	disco	Ignored (end of life)
	eoan	Ignored (end of life)
	focal	Needs triage
	groovy	Ignored (end of life)
	hirsute	Ignored (end of life)
	impish	Ignored (end of life)
	jammy	Needs triage
	kinetic	Ignored (end of life, was needs-triage)
	lunar	Ignored (end of life, was needs-triage)
	mantic	Needs triage
	trusty	Needs triage
	upstream	Needs triage
	xenial	Needs triage
	Patches: upstream: https://gitlab.freedesktop.org/slirp/libslirp/commit/126c04acbabd7ad32c2b018fe10dfac2a3bc1210
slirp4netns Launchpad, Ubuntu, Debian	bionic	Does not exist
	disco	Ignored (end of life)
	eoan	Not vulnerable (0.3.2-1)
	focal	Not vulnerable (0.3.2-1)
	groovy	Not vulnerable (0.3.2-1)
	hirsute	Not vulnerable (0.3.2-1)
	impish	Not vulnerable (0.3.2-1)
	jammy	Not vulnerable (0.3.2-1)
	kinetic	Not vulnerable (0.3.2-1)
	lunar	Not vulnerable (0.3.2-1)
	mantic	Not vulnerable (0.3.2-1)
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
vde2 Launchpad, Ubuntu, Debian	bionic	Needs triage
	disco	Ignored (end of life)
	eoan	Ignored (end of life)
	focal	Needs triage
	groovy	Ignored (end of life)
	hirsute	Ignored (end of life)
	impish	Ignored (end of life)
	jammy	Needs triage
	kinetic	Ignored (end of life, was needs-triage)
	lunar	Ignored (end of life, was needs-triage)
	mantic	Needs triage
	trusty	Does not exist
	upstream	Needs triage
	xenial	Needs triage
xen Launchpad, Ubuntu, Debian	bionic	Not vulnerable
	disco	Ignored (end of life)
	eoan	Ignored (end of life)
	focal	Not vulnerable
	groovy	Ignored (end of life)
	hirsute	Ignored (end of life)
	impish	Ignored (end of life)
	jammy	Not vulnerable
	kinetic	Not vulnerable
	lunar	Not vulnerable
	mantic	Not vulnerable
	trusty	Does not exist
	upstream	Needs triage
	xenial	Not vulnerable
	Binaries built from this source package are in Universe and so are supported by the community.

Severity score breakdown

Parameter	Value
Base score	8.8
Attack vector	Network
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Bugs

https://gitlab.freedesktop.org/slirp/libslirp/issues/10

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