7

CVE-2021-23133

Exploit

Linux Kernel sctp_destroy_sock race condition

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 4.4.269
Linux ≫ Linux Kernel Version >= 4.5 < 4.9.269
Linux ≫ Linux Kernel Version >= 4.10 < 4.14.233
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.191
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.119
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.37
Linux ≫ Linux Kernel Version >= 5.11 < 5.11.21
Linux ≫ Linux Kernel Version >= 5.12 < 5.12.4
Fedoraproject ≫ Fedora Version 32
Fedoraproject ≫ Fedora Version 33
Fedoraproject ≫ Fedora Version 34
Debian ≫ Debian Linux Version 9.0
Netapp ≫ Cloud Backup Version -
Netapp ≫ H410c Firmware Version -
   Netapp ≫ H410c Version -
Netapp ≫ H300s Firmware Version -
   Netapp ≫ H300s Version -
Netapp ≫ H500s Firmware Version -
   Netapp ≫ H500s Version -
Netapp ≫ H700s Firmware Version -
   Netapp ≫ H700s Version -
Netapp ≫ H300e Firmware Version -
   Netapp ≫ H300e Version -
Netapp ≫ H500e Firmware Version -
   Netapp ≫ H500e Version -
Netapp ≫ H700e Firmware Version -
   Netapp ≫ H700e Version -
Netapp ≫ H410s Firmware Version -
   Netapp ≫ H410s Version -
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.47% 0.382
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7 1 5.9
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NIST 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.

https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
Third Party Advisory
Mitigation
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
Third Party Advisory
Mitigation
http://www.openwall.com/lists/oss-security/2021/05/10/1
Patch
Third Party Advisory
Mailing List
http://www.openwall.com/lists/oss-security/2021/05/10/2
Patch
Third Party Advisory
Mailing List
http://www.openwall.com/lists/oss-security/2021/05/10/3
Patch
Third Party Advisory
Mailing List
http://www.openwall.com/lists/oss-security/2021/05/10/4
Patch
Third Party Advisory
Mailing List
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b166a20b07382b8bc1dcee2a448715c9c2c81b5b
Patch
Vendor Advisory
Mailing List
https://security.netapp.com/advisory/ntap-20210611-0008/
Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/04/18/2
Patch
Third Party Advisory
Exploit
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CUX2CA63453G34C6KYVBLJXJXEARZI2X/
Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAEQ3H6HKNO6KUCGRZVYSFSAGEUX23JL/
Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XZASHZVCOFJ4VU2I3BN5W5EPHWJQ7QWX/
Third Party Advisory