Vulnerability in Linux Kernel
CVSS score
7.0
EPSS probability
%0.5
Risk score
0.0
Published
5 y ago
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Vulnerability description
DayBreach CVE AI Research
CVE-2021-23133 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.
A race condition in Linux kernel SCTP sockets (net/sctp/socket.c) before 5.12-rc8 can lead to kernel privilege escalation from the context of a network service or an unprivileged process. If sctp_destroy_sock is called without sock_net(sk)->sctp.addr_wq_lock then an element is removed from the auto_asconf_splist list without any proper locking. This can be exploited by an attacker with network service privileges to escalate to root or from the context of an unprivileged user directly if a BPF_CGROUP_INET_SOCK_CREATE is attached which denies creation of some SCTP socket.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2021-23133 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | linux | linux kernel | View |
| 2 | linux | linux kernel | View |
| 3 | linux | linux kernel | View |
| 4 | linux | linux kernel | View |
| 5 | linux | linux kernel | View |
| 6 | linux | linux kernel | View |
| 7 | linux | linux kernel | View |
| 8 | linux | linux kernel | View |
| 9 | fedoraproject | fedora | View |
| 10 | fedoraproject | fedora | View |
| 11 | fedoraproject | fedora | View |
| 12 | debian | debian linux | View |
| 13 | netapp | cloud backup | View |
| 14 | netapp | solidfire & hci management node | View |
| 15 | broadcom | brocade fabric operating system | View |
| 16 | netapp | h410c firmware | View |
| 17 | netapp | h410c | View |
| 18 | netapp | h300s firmware | View |
| 19 | netapp | h300s | View |
| 20 | netapp | h500s firmware | View |
| 21 | netapp | h500s | View |
| 22 | netapp | h700s firmware | View |
| 23 | netapp | h700s | View |
| 24 | netapp | h300e firmware | View |
| 25 | netapp | h300e | View |
| 26 | netapp | h500e firmware | View |
| 27 | netapp | h500e | View |
| 28 | netapp | h700e firmware | View |
| 29 | netapp | h700e | View |
| 30 | netapp | h410s firmware | View |
| 31 | netapp | h410s | View |
| 32 | netapp | solidfire baseboard management controller firmware | View |
| 33 | netapp | solidfire baseboard management controller | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 7.0 | CVSS V31 | HIGH | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD |
| 6.9 | CVSS V2 | — | AV:L/AC:M/Au:N/C:C/I:C/A:C | NVD |
| 6.7 | CVSS V31 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H | NVD |
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-23133 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-23133 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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