CVE-2020-1983

moderate-risk

Published 2020-04-22

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.

Do I need to act?

0.15% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.5/10 High

NETWORK / LOW complexity

Libslirp

Fedora

Debian Linux

Leap

Ubuntu Linux

Debian Canonical Fedoraproject Opensuse Libslirp Project

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00022.html

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00001.html

Patch https://gitlab.freedesktop.org/slirp/libslirp/-/commit/9ac0371bb8c0a40f5d9f82a1c...

Exploit https://gitlab.freedesktop.org/slirp/libslirp/-/issues/20

Mailing List https://lists.debian.org/debian-lts-announce/2020/06/msg00032.html

Mailing List https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html

Third Party Advisory https://usn.ubuntu.com/4372-1/

Third Party Advisory https://www.debian.org/security/2020/dsa-4665

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00022.html

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00001.html

Patch https://gitlab.freedesktop.org/slirp/libslirp/-/commit/9ac0371bb8c0a40f5d9f82a1c...

Exploit https://gitlab.freedesktop.org/slirp/libslirp/-/issues/20

Mailing List https://lists.debian.org/debian-lts-announce/2020/06/msg00032.html

Mailing List https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html

Third Party Advisory https://usn.ubuntu.com/4372-1/

Third Party Advisory https://www.debian.org/security/2020/dsa-4665

/ 100

moderate-risk

Severity 26/34 · High

Exploitability 1/34 · Minimal

Exposure 16/34 · Moderate