CVE-2021-3772

moderate-risk
Published 2022-03-02

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.

Do I need to act?

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0.16% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10 Medium
NETWORK / HIGH complexity

Affected Products (20)

Affected Vendors

Debian Redhat Linux Oracle Netapp

References (16)

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2000694
Mailing List https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=32...
Patch https://github.com/torvalds/linux/commit/32f8807a48ae55be0e76880cfe8607a18b5bb0d...
Mailing List https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
Third Party Advisory https://security.netapp.com/advisory/ntap-20221007-0001/
Patch https://ubuntu.com/security/CVE-2021-3772
Third Party Advisory https://www.debian.org/security/2022/dsa-5096
Patch https://www.oracle.com/security-alerts/cpujul2022.html
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2000694
Mailing List https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=32...
Patch https://github.com/torvalds/linux/commit/32f8807a48ae55be0e76880cfe8607a18b5bb0d...
Mailing List https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
Third Party Advisory https://security.netapp.com/advisory/ntap-20221007-0001/
Patch https://ubuntu.com/security/CVE-2021-3772
Third Party Advisory https://www.debian.org/security/2022/dsa-5096
Patch https://www.oracle.com/security-alerts/cpujul2022.html
44
/ 100
moderate-risk
Severity 20/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 23/34 · High