CVE-2020-1983

HIGH

libslirp < 4.2.0 - Use-After-Free in ip_reass()

Title source: llm
STIX 2.1

Description

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.

References (10)

Core 10
Core References
Exploit, Third Party Advisory x_refsource_misc
https://gitlab.freedesktop.org/slirp/libslirp/-/issues/20
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2020/dsa-4665
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00022.html
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4372-1/
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00001.html
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/06/msg00032.html
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html

Scores

CVSS v3 7.5
EPSS 0.0015
EPSS Percentile 34.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-416
Status published
Products (10)
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 19.10
canonical/ubuntu_linux 20.04
debian/debian_linux 8.0
debian/debian_linux 9.0
fedoraproject/fedora 31
fedoraproject/fedora 32
libslirp_project/libslirp < 4.2.0
opensuse/leap 15.1
Published Apr 22, 2020
Tracked Since Feb 18, 2026