7.5

CVE-2020-1983: libslirp: use after free vulnerability cause a denial of service.

Modified
AliasesSUSE-SU-2020:1197-1SUSE-SU-2020:1502-1SUSE-SU-2020:1516-1
Published 22-04-2020Last modified 16-09-2024

Vulnerability summary

CVE-2020-1983 is a high (CVSS 7.5) Use After Free vulnerability in canonical ubuntu_linux. EPSS estimates a 2.36% chance of exploitation in the next 30 days, higher than 83.7% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (reference, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
2.36%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 22 · Related 11
DLA-2262-1DLA-2288-1DSA-4665-1OPENSUSE-SU-2024:10991-1OPENSUSE-SU-2024:11287-1RHBA-2020:3172

Timeline

  1. 22-04-2020
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

2.36%

Chance of exploitation in the next 30 days

Percentile

84%

Versus all other CVEs

30-day change

No change 0.00 pp

From 2.36% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (gitlab.freedesktop.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Suse5 products
  • qemu&distro=SUSE Linux Enterprise Module for Basesystem 15 SP1< 3.1.1.1-9.21.4
  • qemu&distro=SUSE Linux Enterprise Module for Server Applications 15 SP1< 3.1.1.1-9.21.4
  • qemu&distro=SUSE Linux Enterprise Server 12 SP5< 3.1.1.1-3.14.1
  • qemu&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP5< 3.1.1.1-3.14.1
  • slirp4netns&distro=SUSE Linux Enterprise Module for Containers 15 SP1< 0.4.5-3.9.1
Debian4 products
  • libslirp< 4.2.0-2
  • qemu< 1:4.1-2
  • slirp4netns< 1.0.1-1
  • debian_linuxEOL8.0 | 9.0
Opensuse4 products
  • leapEOL15.1
  • qemu-linux-user&distro=openSUSE Leap 15.1< 3.1.1.1-lp151.7.15.2
  • qemu&distro=openSUSE Leap 15.1< 3.1.1.1-lp151.7.15.2
  • slirp4netns&distro=openSUSE Leap 15.1< 0.4.5-lp151.2.9.1
Ubuntu3 products
  • libslirp< 4.1.0-2ubuntu2
  • qemu< 2.0.0+dfsg-2ubuntu1.47+esm4 | < 1:2.5+dfsg-5ubuntu10.44 | < 1:2.11+dfsg-1ubuntu7.26
  • slirp4netnsAll versions (No fix recorded)
Alpine1 product
  • libslirp< 4.3.0-r0
Canonical1 product
Fedoraproject1 product
Libslirp_project1 product
Slirp1 product

9 vendors · 21 products

References

25 links
Show all 25 references