gsd-2021-23133
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
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.
Aliases
Aliases
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"GSD": {
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"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)-\u003esctp.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.",
"id": "GSD-2021-23133",
"references": [
"https://www.suse.com/security/cve/CVE-2021-23133.html",
"https://access.redhat.com/errata/RHSA-2021:4356",
"https://access.redhat.com/errata/RHSA-2021:4140",
"https://ubuntu.com/security/CVE-2021-23133",
"https://advisories.mageia.org/CVE-2021-23133.html",
"https://security.archlinux.org/CVE-2021-23133",
"https://alas.aws.amazon.com/cve/html/CVE-2021-23133.html",
"https://linux.oracle.com/cve/CVE-2021-23133.html"
]
},
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"remediation": "unknown",
"reportConfidence": "confirmed",
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"modified": "2023-12-13T01:23:30.183129Z",
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"lastModifiedDate": "2023-07-28T19:34Z",
"publishedDate": "2021-04-22T18:15Z"
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}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.