6.5

CVE-2019-20503: canonical ubuntu_linux Out-of-bounds Read

CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2019-20503DEBIAN-CVE-2019-20503DLA-3481-1
Published 06-03-2020Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2019-20503 is a medium (CVSS 6.5) Out-of-bounds Read vulnerability in canonical ubuntu_linux. EPSS estimates a 3.14% chance of exploitation in the next 30 days, higher than 87.7% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
37/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
3.14%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 33 · Related 16
DLA-2140-1DLA-2150-1DSA-4639-1DSA-4642-1DSA-4645-1MGASA-2020-0141

Timeline

  1. 06-03-2020
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

usrsctp before 2019-12-20 has out-of-bounds reads in sctp_load_addresses_from_init.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

3.14%

Chance of exploitation in the next 30 days

Percentile

88%

Versus all other CVEs

30-day change

-0.01 pp

From 3.16% on 19-09-2026

19-09-202619-10-2026
EPSS score
3.14%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugs.chromium.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Debian5 products
  • chromium< 80.0.3987.149-1
  • firefox-esr< 68.6.0esr-1
  • libusrsctp< 0.9.3.0+20200312-1 | < 0.9.3.0+20190127-2+deb10u1
  • thunderbird< 1:68.6.0-1
  • debian_linuxEOL8.0 | 9.0 | 10.0
Ubuntu4 products
  • chromium-browser< 80.0.3987.149-0ubuntu0.16.04.1 | < 80.0.3987.149-0ubuntu0.18.04.1
  • firefox< 74.0+build3-0ubuntu0.16.04.1 | < 74.0+build3-0ubuntu0.18.04.1 | < 74.0+build3-0ubuntu1
  • libusrsctpAll versions (No fix recorded)
  • thunderbird< 1:68.7.0+build1-0ubuntu0.16.04.2 | < 1:68.7.0+build1-0ubuntu0.18.04.1 | < 1:68.6.0+build2-0ubuntu1
Canonical1 product
Usrsctp_project1 product

4 vendors · 11 products

References

46 links
Show all 46 references