usrsctp before 2019-12-20 has out-of-bounds reads in sctp_load_addresses_from_init.
Priority LOW 35CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 19 fixed, 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-125 and the CVSS impact.
Summary
usrsctp before 2019-12-20 has out-of-bounds reads in sctp_load_addresses_from_init.
Why it matters now
EPSS 0.03141 87th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 9 advisoriesRed Hat: 19 fixed, 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:usrsctp_project:usrsctp:*:*:*:*:*:*:*:* | before 0.9.4.0 | Vulnerable | Usrsctp Project |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* | 16.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:esm:*:*:* | 18.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* | 19.10 | Vulnerable | Canonical |
- cpe:2.3:a:usrsctp_project:usrsctp:*:*:*:*:*:*:*:* Versions before 0.9.4.0 Vulnerable ·Usrsctp Project
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* Versions 16.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:esm:*:*:* Versions 18.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* Versions 19.10 Vulnerable ·Canonical
Remediation
Red Hat 9 advisories
- RHSA-2020:1270 Released 2020-04-01 · Red Hat rating Importantchromium-browser security update
- Red Hat Enterprise Linux Desktop Supplementary (v. 6) chromium-browser-80.0.3987.149-1.el6_10
- Red Hat Enterprise Linux HPC Node Supplementary (v. 6) chromium-browser-80.0.3987.149-1.el6_10
- Red Hat Enterprise Linux Server Supplementary (v. 6) chromium-browser-80.0.3987.149-1.el6_10
- Red Hat Enterprise Linux Workstation Supplementary (v. 6) chromium-browser-80.0.3987.149-1.el6_10
- RHSA-2020:0914 Released 2020-03-23 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux Desktop (v. 6) thunderbird-68.6.0-1.el6_10
- Red Hat Enterprise Linux Server Optional (v. 6) thunderbird-68.6.0-1.el6_10
- Red Hat Enterprise Linux Workstation (v. 6) thunderbird-68.6.0-1.el6_10
- RHSA-2020:0919 Released 2020-03-23 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream (v. 8) thunderbird-68.6.0-1.el8_1
Show 6 more Red Hat advisories
- RHSA-2020:0918 Released 2020-03-23 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream E4S (v. 8.0) thunderbird-68.6.0-1.el8_0
- RHSA-2020:0905 Released 2020-03-19 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux Client (v. 7) thunderbird-68.6.0-1.el7_7
- Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-68.6.0-1.el7_7
- Red Hat Enterprise Linux Workstation (v. 7) thunderbird-68.6.0-1.el7_7
- RHSA-2020:0820 Released 2020-03-16 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream (v. 8) firefox-68.6.0-1.el8_1
- RHSA-2020:0819 Released 2020-03-16 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream E4S (v. 8.0) firefox-68.6.0-1.el8_0
- RHSA-2020:0816 Released 2020-03-16 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux Desktop (v. 6) firefox-68.6.0-1.el6_10
- Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-68.6.0-1.el6_10
- Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox-68.6.0-1.el6_10
- Red Hat Enterprise Linux Server (v. 6) firefox-68.6.0-1.el6_10
- Red Hat Enterprise Linux Server Optional (v. 6) firefox-68.6.0-1.el6_10
- Red Hat Enterprise Linux Workstation (v. 6) firefox-68.6.0-1.el6_10
- Red Hat Enterprise Linux Workstation Optional (v. 6) firefox-68.6.0-1.el6_10
- RHSA-2020:0815 Released 2020-03-16 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux Client (v. 7) firefox-68.6.0-1.el7_7
- Red Hat Enterprise Linux Client Optional (v. 7) firefox-68.6.0-1.el7_7
- Red Hat Enterprise Linux Server (v. 7) firefox-68.6.0-1.el7_7
- Red Hat Enterprise Linux Server Optional (v. 7) firefox-68.6.0-1.el7_7
- Red Hat Enterprise Linux Workstation (v. 7) firefox-68.6.0-1.el7_7
- Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-68.6.0-1.el7_7
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2020:0820, RHSA-2020:0919 |
| Red Hat Enterprise Linux AppStream E4S (v. 8.0) | Fixed | RHSA-2020:0819, RHSA-2020:0918 |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2020:0815, RHSA-2020:0905 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2020:0815 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2020:0816, RHSA-2020:0914 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2020:0816 |
| Red Hat Enterprise Linux Desktop Supplementary (v. 6) | Fixed | RHSA-2020:1270 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2020:0816 |
| Red Hat Enterprise Linux HPC Node Supplementary (v. 6) | Fixed | RHSA-2020:1270 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2020:0816 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2020:0815 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2020:0816, RHSA-2020:0914 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2020:0815, RHSA-2020:0905 |
| Red Hat Enterprise Linux Server Supplementary (v. 6) | Fixed | RHSA-2020:1270 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2020:0816, RHSA-2020:0914 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2020:0815, RHSA-2020:0905 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2020:0816 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2020:0815 |
| Red Hat Enterprise Linux Workstation Supplementary (v. 6) | Fixed | RHSA-2020:1270 |
Timeline
- 2026-10-02 Threatist record created from CVE-2019-20503
- 2026-10-03 Alias added: GHSA-48ww-7497-cmhw
References
Advisory 36
- [debian-lts-announce] 20200311 [SECURITY] [DLA 2140-1] firefox-esr security update
- DSA-4639
- GLSA-202003-02
- GLSA-202003-10
- openSUSE-SU-2020:0340
- RHSA-2020:0815
- RHSA-2020:0819
- RHSA-2020:0816
- RHSA-2020:0820
- USN-4299-1
- https://crbug.com/1059349
- https://chromereleases.googleblog.com/2020/03/stable-channel-update-for-desktop_18.html
- [debian-lts-announce] 20200320 [SECURITY] [DLA 2150-1] thunderbird security update
- DSA-4642
- openSUSE-SU-2020:0365
- openSUSE-SU-2020:0366
- DSA-4645
- FEDORA-2020-7fd051b378
- FEDORA-2020-17149a4f3d
- openSUSE-SU-2020:0389
- FEDORA-2020-39e0b8bd14
- USN-4328-1
- USN-4335-1
- https://support.apple.com/kb/HT211175
- https://support.apple.com/kb/HT211171
- https://support.apple.com/kb/HT211168
- https://support.apple.com/kb/HT211177
- 20200529 APPLE-SA-2020-05-26-1 iOS 13.5 and iPadOS 13.5
- 20200529 APPLE-SA-2020-05-26-7 Safari 13.1.1
- 20200529 APPLE-SA-2020-05-26-5 watchOS 6.2.5
- 20200529 APPLE-SA-2020-05-26-4 tvOS 13.4.5
- https://support.apple.com/HT211168
- https://support.apple.com/HT211171
- https://support.apple.com/HT211175
- https://support.apple.com/HT211177
- [debian-lts-announce] 20230706 [SECURITY] [DLA 3481-1] libusrsctp security update
Sources
- CVE-2019-20503 · CVE Program
- CVE-2019-20503 · NVD
- FIRST EPSS
- GHSA-48ww-7497-cmhw · GitHub Advisory Database · CC BY 4.0
- CVE-2019-20503 · Red Hat security data · CC BY 4.0
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