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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities
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CVE-2021-23133 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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

Weakness Enumeration

CWE-ID CWE Name Source
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') cwe source acceptance level NIST   Palo Alto Networks, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

13 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-23133
NVD Published Date:
04/22/2021
NVD Last Modified:
11/06/2023
Source:
Palo Alto Networks, Inc.