6.5

CVE-2020-10756: canonical ubuntu_linux Out-of-bounds Read

Modified
AliasesSUSE-SU-2020:1915-1UBUNTU-CVE-2020-10756USN-4437-1
Published 09-07-2020Last modified 04-08-2024

Vulnerability summary

CVE-2020-10756 is a medium (CVSS 6.5) Out-of-bounds Read vulnerability in canonical ubuntu_linux. EPSS estimates a 0.51% chance of exploitation in the next 30 days, higher than 43.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.51%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 15 · Related 10
DLA-2288-1DSA-4728-1OPENSUSE-SU-2021:1043-1OPENSUSE-SU-2024:10991-1RHSA-2020:3586RHSA-2020:4059

Timeline

  1. 09-07-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

An out-of-bounds read vulnerability was found in the SLiRP networking implementation of the QEMU emulator. This flaw occurs in the icmp6_send_echoreply() routine while replying to an ICMP echo request, also known as ping. This flaw allows a malicious guest to leak the contents of the host memory, resulting in possible information disclosure. This flaw affects versions of libslirp before 4.3.1.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.51%

Chance of exploitation in the next 30 days

Percentile

44%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.51% 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

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Debian4 products
  • libslirp< 4.3.1-1
  • qemu< 1:4.1-2
  • slirp4netns< 1.0.1-1
  • debian_linuxEOL9.0 | 10.0
Opensuse3 products
  • leapEOL15.0 | 15.1
  • slirp4netns&distro=openSUSE Leap 15.1< 0.4.7-lp151.2.12.1
  • slirp4netns&distro=openSUSE Leap 15.2< 0.4.7-lp152.2.3.1
Ubuntu3 products
  • libslirp< 4.1.0-2ubuntu2.1
  • qemu< 1:2.11+dfsg-1ubuntu7.31
  • slirp4netnsAll versions (No fix recorded)
Redhat2 products
Suse2 products
  • slirp4netns&distro=SUSE Linux Enterprise Module for Containers 15 SP1< 0.4.7-3.12.1
  • slirp4netns&distro=SUSE Linux Enterprise Module for Containers 15 SP2< 0.4.7-3.12.1
Alpine1 product
  • libslirp< 4.3.1-r0
Canonical1 product
Libslirp_project1 product

8 vendors · 17 products

References

21 links
Show all 21 references