Executive Summary

Informations
Name CVE-2021-23133 First vendor Publication 2021-04-22
Vendor Cve Last vendor Modification 2021-06-23

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 7
Base Score 7 Environmental Score 7
impact SubScore 5.9 Temporal Score 7
Exploitabality Sub Score 1
 
Attack Vector Local Attack Complexity High
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:M/Au:N/C:C/I:C/A:C)
Cvss Base Score 6.9 Attack Range Local
Cvss Impact Score 10 Attack Complexity Medium
Cvss Expoit Score 3.4 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23133

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-362 Race Condition

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 2
Os 3394

Sources (Detail)

Source Url
CONFIRM https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id...
https://security.netapp.com/advisory/ntap-20210611-0008/
https://www.openwall.com/lists/oss-security/2021/04/18/2
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
MLIST http://www.openwall.com/lists/oss-security/2021/05/10/1
http://www.openwall.com/lists/oss-security/2021/05/10/2
http://www.openwall.com/lists/oss-security/2021/05/10/3
http://www.openwall.com/lists/oss-security/2021/05/10/4
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html

Alert History

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Date Informations
2021-06-23 09:23:09
  • Multiple Updates
2021-06-11 17:23:06
  • Multiple Updates
2021-06-05 01:44:00
  • Multiple Updates
2021-06-04 01:38:44
  • Multiple Updates
2021-06-03 01:39:39
  • Multiple Updates
2021-05-29 01:39:18
  • Multiple Updates
2021-05-25 12:40:46
  • Multiple Updates
2021-05-19 12:38:45
  • Multiple Updates
2021-05-10 17:22:53
  • Multiple Updates
2021-05-10 13:22:54
  • Multiple Updates
2021-05-10 12:38:55
  • Multiple Updates
2021-05-04 14:09:02
  • Multiple Updates
2021-05-04 13:23:43
  • Multiple Updates
2021-04-29 09:22:50
  • Multiple Updates
2021-04-28 01:10:31
  • Multiple Updates
2021-04-28 01:10:25
  • Multiple Updates
2021-04-27 21:23:09
  • Multiple Updates
2021-04-27 09:22:48
  • Multiple Updates
2021-04-23 01:10:29
  • First insertion