7
CVE-2021-23133
- EPSS 0.02%
- Published 22.04.2021 18:15:08
- Last modified 21.11.2024 05:51:16
- Source psirt@paloaltonetworks.com
- Teams watchlist Login
- Open Login
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.
Data is provided by the National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 4.10 < 4.14.232
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.189
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.114
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.32
Linux ≫ Linux Kernel Version >= 5.11 < 5.11.16
Fedoraproject ≫ Fedora Version32
Fedoraproject ≫ Fedora Version33
Fedoraproject ≫ Fedora Version34
Debian ≫ Debian Linux Version9.0
Netapp ≫ Cloud Backup Version-
Netapp ≫ Solidfire & Hci Management Node Version-
Broadcom ≫ Brocade Fabric Operating System Version-
Netapp ≫ H410c Firmware Version-
Netapp ≫ H300s Firmware Version-
Netapp ≫ H500s Firmware Version-
Netapp ≫ H700s Firmware Version-
Netapp ≫ H300e Firmware Version-
Netapp ≫ H500e Firmware Version-
Netapp ≫ H700e Firmware Version-
Netapp ≫ H410s Firmware Version-
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
| Type | Source | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.02% | 0.045 |
| Source | Base Score | Exploit Score | Impact Score | Vector string |
|---|---|---|---|---|
| nvd@nist.gov | 7 | 1 | 5.9 |
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
|
| nvd@nist.gov | 6.9 | 3.4 | 10 |
AV:L/AC:M/Au:N/C:C/I:C/A:C
|
| psirt@paloaltonetworks.com | 6.7 | 0.8 | 5.9 |
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
|
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.