CVE-2021-3772
MEDIUMCVSS 6.5/10EPSS 1.21%
Last modified
CVE-2021-3772 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A flaw was found in the Linux SCTP stack. A blind attacker may be able to kill an existing SCTP association through invalid chunks if the attacker knows the IP-addresses and port numbers being used and the attacker can send packets with spoofed IP addresses.. EPSS estimates a 1.21% chance of exploitation in the next 30 days.
Description
A flaw was found in the Linux SCTP stack. A blind attacker may be able to kill an existing SCTP association through invalid chunks if the attacker knows the IP-addresses and port numbers being used and the attacker can send packets with spoofed IP addresses.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.15.0 |
| Redhat | Enterprise Linux | 8.0 |
| Debian | Debian Linux | 9.0 |
| Debian | Debian Linux | 10.0 |
| Oracle | Communications Cloud Native Core Binding Support Function | 22.1.3 |
| Oracle | Communications Cloud Native Core Network Exposure Function | 22.1.1 |
| Oracle | Communications Cloud Native Core Policy | 22.2.0 |
| Netapp | E-Series Santricity Os Controller | 11.0 |
| Netapp | E-Series Santricity Os Controller | 11.0.0 |
| Netapp | E-Series Santricity Os Controller | 11.20 |
| Netapp | E-Series Santricity Os Controller | 11.25 |
| Netapp | E-Series Santricity Os Controller | 11.30 |
| Netapp | E-Series Santricity Os Controller | 11.30.5r3 |
| Netapp | E-Series Santricity Os Controller | 11.40 |
| Netapp | E-Series Santricity Os Controller | 11.40.3r2 |
| Netapp | E-Series Santricity Os Controller | 11.40.5 |
| Netapp | E-Series Santricity Os Controller | 11.50.1 |
| Netapp | E-Series Santricity Os Controller | 11.50.2 |
| Netapp | E-Series Santricity Os Controller | 11.60 |
| Netapp | E-Series Santricity Os Controller | 11.60.0 |
| Netapp | E-Series Santricity Os Controller | 11.60.1 |
| Netapp | E-Series Santricity Os Controller | 11.60.3 |
| Netapp | E-Series Santricity Os Controller | 11.70.1 |
| Netapp | E-Series Santricity Os Controller | 11.70.2 |
| Netapp | Solidfire \& Hci Management Node | All versions |
| Netapp | Solidfire \& Hci Storage Node | All versions |
| Netapp | Hci Compute Node | All versions |
| Netapp | H300s Firmware | All versions |
| Netapp | H500s Firmware | All versions |
| Netapp | H700s Firmware | All versions |
| Netapp | H410s Firmware | All versions |
| Netapp | H410c Firmware | All versions |
| Netapp | H610c Firmware | All versions |
| Netapp | H610s Firmware | All versions |
| Netapp | H615c Firmware | All versions |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2000694Issue Tracking, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=32f8807a48ae55be0e76880cfe8607a18b5bb0dfMailing List, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/32f8807a48ae55be0e76880cfe8607a18b5bb0dfPatch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20221007-0001/Third Party Advisory
- https://ubuntu.com/security/CVE-2021-3772Patch, Third Party Advisory
- https://www.debian.org/security/2022/dsa-5096Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlPatch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2000694Issue Tracking, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=32f8807a48ae55be0e76880cfe8607a18b5bb0dfMailing List, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/32f8807a48ae55be0e76880cfe8607a18b5bb0dfPatch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20221007-0001/Third Party Advisory
- https://ubuntu.com/security/CVE-2021-3772Patch, Third Party Advisory
- https://www.debian.org/security/2022/dsa-5096Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlPatch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-3772?
A flaw was found in the Linux SCTP stack. A blind attacker may be able to kill an existing SCTP association through invalid chunks if the attacker knows the IP-addresses and port numbers being used and the attacker can send packets with spoofed IP addresses.
How severe is CVE-2021-3772?
CVE-2021-3772 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.21% probability of exploitation in the next 30 days.
How do I fix CVE-2021-3772?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-3772?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST