MEDIUM
usrsctp: Out of bounds reads in sctp_load_addresses_from_init()
Published Mar 6, 2020
6.5
MEDIUMCVSS 3.1
EPSS 3.14%
Description
usrsctp before 2019-12-20 has out-of-bounds reads in sctp_load_addresses_from_init.
Affected products
No data.
Configuration 1
- < 0.9.4.0
Configuration 2
OR
- 8.0
- 9.0
- 10.0
Configuration 3
OR
- 16.04
- 18.04
- 19.10
No data.
Red Hat Enterprise Linux 6
firefox-0:68.6.0-1.el6_10
Fixed · RHSA-2020:0816
Red Hat Enterprise Linux 6
thunderbird-0:68.6.0-1.el6_10
Fixed · RHSA-2020:0914
Red Hat Enterprise Linux 6 Supplementary
chromium-browser-0:80.0.3987.149-1.el6_10
Fixed · RHSA-2020:1270
Red Hat Enterprise Linux 7
firefox-0:68.6.0-1.el7_7
Fixed · RHSA-2020:0815
Red Hat Enterprise Linux 7
thunderbird-0:68.6.0-1.el7_7
Fixed · RHSA-2020:0905
Red Hat Enterprise Linux 8
firefox-0:68.6.0-1.el8_1
Fixed · RHSA-2020:0820
Red Hat Enterprise Linux 8
thunderbird-0:68.6.0-1.el8_1
Fixed · RHSA-2020:0919
Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions
firefox-0:68.6.0-1.el8_0
Fixed · RHSA-2020:0819
Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions
thunderbird-0:68.6.0-1.el8_0
Fixed · RHSA-2020:0918
Red Hat Enterprise Linux 5
firefox
Out of support scope
Red Hat Enterprise Linux 5
thunderbird
Out of support scope
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | firefox-0:68.6.0-1.el6_10 | Fixed | RHSA-2020:0816 |
| Red Hat Enterprise Linux 6 | thunderbird-0:68.6.0-1.el6_10 | Fixed | RHSA-2020:0914 |
| Red Hat Enterprise Linux 6 Supplementary | chromium-browser-0:80.0.3987.149-1.el6_10 | Fixed | RHSA-2020:1270 |
| Red Hat Enterprise Linux 7 | firefox-0:68.6.0-1.el7_7 | Fixed | RHSA-2020:0815 |
| Red Hat Enterprise Linux 7 | thunderbird-0:68.6.0-1.el7_7 | Fixed | RHSA-2020:0905 |
| Red Hat Enterprise Linux 8 | firefox-0:68.6.0-1.el8_1 | Fixed | RHSA-2020:0820 |
| Red Hat Enterprise Linux 8 | thunderbird-0:68.6.0-1.el8_1 | Fixed | RHSA-2020:0919 |
| Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions | firefox-0:68.6.0-1.el8_0 | Fixed | RHSA-2020:0819 |
| Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions | thunderbird-0:68.6.0-1.el8_0 | Fixed | RHSA-2020:0918 |
| Red Hat Enterprise Linux 5 | firefox | Out of support scope | n/a |
| Red Hat Enterprise Linux 5 | thunderbird | Out of support scope | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
6.5 MEDIUM NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
6.1 MEDIUM Red Hat
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Impact Low
Integrity Impact Low
Availability Impact None
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
3.14% 0.03141
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.03141
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (22 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 3.14% (0.03141) | 87.48th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.16% (0.03155) | 86.25th | v5 (v2026.06.15) |
| Jan 8, 2026 | 2.47% (0.02474) | 84.86th | v4 (v2025.03.14) |
| Dec 27, 2025 | 0.99% (0.00987) | 76.35th | v4 (v2025.03.14) |
| Oct 28, 2025 | 2.47% (0.02474) | 84.71th | v4 (v2025.03.14) |
| Oct 27, 2025 | 1.33% (0.01335) | 79.37th | v4 (v2025.03.14) |
| Oct 1, 2025 | 2.47% (0.02474) | 84.77th | v4 (v2025.03.14) |
| Mar 30, 2025 | 0.98% (0.00979) | 74.72th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.08% (0.03082) | 77.84th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.98% (0.00979) | 75.18th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.19% (0.00192) | 58.13th | v3 (v2023.03.01) |
| Jun 28, 2024 | 0.19% (0.00195) | 57.33th | v3 (v2023.03.01) |
| Mar 27, 2024 | 0.48% (0.00484) | 75.48th | v3 (v2023.03.01) |
| Jan 26, 2024 | 0.48% (0.00484) | 73.47th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.50% (0.00504) | 72.80th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 17.11% (0.17112) | 93.05th | v2 (v2022.01.01) |
| Feb 3, 2022 | 26.67% (0.26670) | 95.67th | v1 |
| Jan 6, 2022 | 26.67% (0.26670) | 95.61th | v1 |
| Sep 1, 2021 | 7.50% (0.07498) | 91.42th | v1 |
| Apr 14, 2021 | 7.50% (0.07498) | 0.00th | v1 |
Weaknesses (1)
References (43)
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00022.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00028.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00030.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00037.html vendor-advisoryMailing ListThird Party Advisory
- http://seclists.org/fulldisclosure/2020/May/49 mailing-listMailing ListThird Party Advisory
- http://seclists.org/fulldisclosure/2020/May/52 mailing-listMailing ListThird Party Advisory
- http://seclists.org/fulldisclosure/2020/May/55 mailing-listMailing ListThird Party Advisory
- http://seclists.org/fulldisclosure/2020/May/59 mailing-listMailing ListThird Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0815 vendor-advisoryThird Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0816 vendor-advisoryThird Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0819 vendor-advisoryThird Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0820 vendor-advisoryThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2019-20503 Vendor Advisory
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1992 ExploitPatchVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1812203 Issue Tracking
- https://chromereleases.googleblog.com/2020/03/stable-channel-update-for-desktop_18.html Third Party Advisory
- https://crbug.com/1059349 Third Party Advisory
- https://github.com/sctplab/usrsctp/commit/790a7a2555aefb392a5a69923f1e9d17b4968467 PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00013.html mailing-listMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00023.html mailing-listMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/07/msg00003.html mailing-listMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2DDNOAGIX5D77TTHT6YPMVJ5WTXTCQEI/ vendor-advisoryMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IOHSO6BUKC6I66J5PZOMAGFVJ66ZS57/ vendor-advisoryMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWANFIR3PYAL5RJQ4AO3ZS2DYMSF2ZGZ/ vendor-advisoryMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-20503
- https://security.gentoo.org/glsa/202003-02 vendor-advisoryThird Party Advisory
- https://security.gentoo.org/glsa/202003-10 vendor-advisoryThird Party Advisory
- https://support.apple.com/HT211168 Third Party Advisory
- https://support.apple.com/HT211171 Third Party Advisory
- https://support.apple.com/HT211175 Third Party Advisory
- https://support.apple.com/HT211177 Third Party Advisory
- https://support.apple.com/kb/HT211168 Third Party Advisory
- https://support.apple.com/kb/HT211171 Third Party Advisory
- https://support.apple.com/kb/HT211175 Third Party Advisory
- https://support.apple.com/kb/HT211177 Third Party Advisory
- https://usn.ubuntu.com/4299-1/ vendor-advisoryThird Party Advisory
- https://usn.ubuntu.com/4328-1/ vendor-advisoryThird Party Advisory
- https://usn.ubuntu.com/4335-1/ vendor-advisoryThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2019-20503
- https://www.debian.org/security/2020/dsa-4639 vendor-advisoryThird Party Advisory
- https://www.debian.org/security/2020/dsa-4642 vendor-advisoryThird Party Advisory
- https://www.debian.org/security/2020/dsa-4645 vendor-advisoryThird Party Advisory
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-09/#CVE-2019-20503
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Mar 6, 2020
Updated Aug 5, 2024
Reserved Mar 6, 2020
Link CVE-2019-20503
CISA Vulnrichment
Updated n/a