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CERTFR-2021-AVI-552
Vulnerability from certfr_avis
De multiples vulnérabilités ont été découvertes dans le noyau Linux d'Ubuntu. Elles permettent à un attaquant de provoquer une exécution de code arbitraire, un déni de service et une atteinte à la confidentialité des données.
Solution
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
NoneImpacted products
References
| Title | Publication Time | Tags | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Ubuntu 16.04 ESM",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 18.04 LTS",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 21.04",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 20.04 LTS",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 14.04 ESM",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
}
],
"affected_systems_content": null,
"content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
"cves": [
{
"name": "CVE-2020-26139",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-26139"
},
{
"name": "CVE-2020-24587",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-24587"
},
{
"name": "CVE-2021-33034",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-33034"
},
{
"name": "CVE-2021-3587",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-3587"
},
{
"name": "CVE-2021-3573",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-3573"
},
{
"name": "CVE-2021-3506",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-3506"
},
{
"name": "CVE-2020-24586",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-24586"
},
{
"name": "CVE-2021-0129",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-0129"
},
{
"name": "CVE-2021-33909",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-33909"
},
{
"name": "CVE-2021-3564",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-3564"
},
{
"name": "CVE-2020-26558",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-26558"
},
{
"name": "CVE-2020-26147",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-26147"
},
{
"name": "CVE-2021-23134",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-23134"
},
{
"name": "CVE-2021-32399",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-32399"
},
{
"name": "CVE-2021-33200",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-33200"
},
{
"name": "CVE-2021-31829",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-31829"
},
{
"name": "CVE-2021-28691",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-28691"
}
],
"initial_release_date": "2021-07-21T00:00:00",
"last_revision_date": "2021-07-21T00:00:00",
"links": [],
"reference": "CERTFR-2021-AVI-552",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2021-07-21T00:00:00.000000"
}
],
"risks": [
{
"description": "Ex\u00e9cution de code arbitraire"
},
{
"description": "D\u00e9ni de service"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans le noyau Linux\nd\u0027Ubuntu. Elles permettent \u00e0 un attaquant de provoquer une ex\u00e9cution de\ncode arbitraire, un d\u00e9ni de service et une atteinte \u00e0 la confidentialit\u00e9\ndes donn\u00e9es.\n",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans le noyau Linux d\u0027Ubuntu",
"vendor_advisories": [
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-5014-1 du 20 juillet 2021",
"url": "https://ubuntu.com/security/notices/USN-5014-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-5016-1 du 20 juillet 2021",
"url": "https://ubuntu.com/security/notices/USN-5016-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-5017-1 du 20 juillet 2021",
"url": "https://ubuntu.com/security/notices/USN-5017-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-5018-1 du 20 juillet 2021",
"url": "https://ubuntu.com/security/notices/USN-5018-1"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-5015-1 du 20 juillet 2021",
"url": "https://ubuntu.com/security/notices/USN-5015-1"
}
]
}
CVE-2020-26558 (GCVE-0-2020-26558)
Vulnerability from cvelistv5
Published
2021-05-24 17:22
Modified
2024-08-04 15:56
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2 may permit a nearby man-in-the-middle attacker to identify the Passkey used during pairing (in the Passkey authentication procedure) by reflection of the public key and the authentication evidence of the initiating device, potentially permitting this attacker to complete authenticated pairing with the responding device using the correct Passkey for the pairing session. The attack methodology determines the Passkey value one bit at a time.
References
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CVE-2020-26147 (GCVE-0-2020-26147)
Vulnerability from cvelistv5
Published
2021-05-11 19:40
Modified
2024-08-04 15:49
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in the Linux kernel 5.8.9. The WEP, WPA, WPA2, and WPA3 implementations reassemble fragments even though some of them were sent in plaintext. This vulnerability can be abused to inject packets and/or exfiltrate selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP data-confidentiality protocol is used.
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
{
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"references": [
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CVE-2021-0129 (GCVE-0-2021-0129)
Vulnerability from cvelistv5
Published
2021-06-09 19:50
Modified
2024-08-03 15:32
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- information disclosure
Summary
Improper access control in BlueZ may allow an authenticated user to potentially enable information disclosure via adjacent access.
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CVE-2021-33200 (GCVE-0-2021-33200)
Vulnerability from cvelistv5
Published
2021-05-27 00:00
Modified
2024-08-03 23:42
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
kernel/bpf/verifier.c in the Linux kernel through 5.12.7 enforces incorrect limits for pointer arithmetic operations, aka CID-bb01a1bba579. This can be abused to perform out-of-bounds reads and writes in kernel memory, leading to local privilege escalation to root. In particular, there is a corner case where the off reg causes a masking direction change, which then results in an incorrect final aux->alu_limit.
References
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2021-33034 (GCVE-0-2021-33034)
Vulnerability from cvelistv5
Published
2021-05-14 22:57
Modified
2024-08-03 23:42
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
In the Linux kernel before 5.12.4, net/bluetooth/hci_event.c has a use-after-free when destroying an hci_chan, aka CID-5c4c8c954409. This leads to writing an arbitrary value.
References
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2021-3573 (GCVE-0-2021-3573)
Vulnerability from cvelistv5
Published
2021-08-13 00:00
Modified
2024-08-03 17:01
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-362 - ->CWE-416
Summary
A use-after-free in function hci_sock_bound_ioctl() of the Linux kernel HCI subsystem was found in the way user calls ioct HCIUNBLOCKADDR or other way triggers race condition of the call hci_unregister_dev() together with one of the calls hci_sock_blacklist_add(), hci_sock_blacklist_del(), hci_get_conn_info(), hci_get_auth_info(). A privileged local user could use this flaw to crash the system or escalate their privileges on the system. This flaw affects the Linux kernel versions prior to 5.13-rc5.
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CVE-2021-32399 (GCVE-0-2021-32399)
Vulnerability from cvelistv5
Published
2021-05-10 21:19
Modified
2024-08-03 23:17
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
net/bluetooth/hci_request.c in the Linux kernel through 5.12.2 has a race condition for removal of the HCI controller.
References
| URL | Tags | |||||||||||||||||||
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CVE-2020-24587 (GCVE-0-2020-24587)
Vulnerability from cvelistv5
Published
2021-05-11 00:00
Modified
2024-08-04 15:19
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that all fragments of a frame are encrypted under the same key. An adversary can abuse this to decrypt selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP encryption key is periodically renewed.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2021-3564 (GCVE-0-2021-3564)
Vulnerability from cvelistv5
Published
2021-06-08 11:59
Modified
2024-08-03 17:01
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw double-free memory corruption in the Linux kernel HCI device initialization subsystem was found in the way user attach malicious HCI TTY Bluetooth device. A local user could use this flaw to crash the system. This flaw affects all the Linux kernel versions starting from 3.13.
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
Impacted products
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CVE-2020-24586 (GCVE-0-2020-24586)
Vulnerability from cvelistv5
Published
2021-05-11 00:00
Modified
2024-08-04 15:19
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that received fragments be cleared from memory after (re)connecting to a network. Under the right circumstances, when another device sends fragmented frames encrypted using WEP, CCMP, or GCMP, this can be abused to inject arbitrary network packets and/or exfiltrate user data.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
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CVE-2021-3587 (GCVE-0-2021-3587)
Vulnerability from cvelistv5
DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2021-38208. Reason: This candidate is a reservation duplicate of CVE-2021-38208. Notes: All CVE users should reference CVE-2021-38208 instead of this candidate. All references and descriptions in this candidate have been removed to prevent accidental usage.
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CVE-2021-23134 (GCVE-0-2021-23134)
Vulnerability from cvelistv5
Published
2021-05-12 22:45
Modified
2024-09-17 03:38
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-416 - Use After Free
Summary
Use After Free vulnerability in nfc sockets in the Linux Kernel before 5.12.4 allows local attackers to elevate their privileges. In typical configurations, the issue can only be triggered by a privileged local user with the CAP_NET_RAW capability.
References
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux Kernel | Linux Kernel |
Version: unspecified < 5.12.4 |
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CVE-2021-28691 (GCVE-0-2021-28691)
Vulnerability from cvelistv5
Published
2021-06-29 11:30
Modified
2024-08-03 21:47
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- unknown
Summary
Guest triggered use-after-free in Linux xen-netback A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will lead to a use-after-free in Linux netback when the backend is destroyed, as the kernel thread associated with queue 0 will have already exited and thus the call to kthread_stop will be performed against a stale pointer.
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
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CVE-2021-3506 (GCVE-0-2021-3506)
Vulnerability from cvelistv5
Published
2021-04-19 21:11
Modified
2024-08-03 16:53
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
An out-of-bounds (OOB) memory access flaw was found in fs/f2fs/node.c in the f2fs module in the Linux kernel in versions before 5.12.0-rc4. A bounds check failure allows a local attacker to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2021-33909 (GCVE-0-2021-33909)
Vulnerability from cvelistv5
Published
2021-07-20 18:01
Modified
2024-08-04 00:05
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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CVE-2021-31829 (GCVE-0-2021-31829)
Vulnerability from cvelistv5
Published
2021-05-06 15:43
Modified
2024-08-03 23:10
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can contain uninitialized data that might represent sensitive information previously operated on by the kernel.
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CVE-2020-26139 (GCVE-0-2020-26139)
Vulnerability from cvelistv5
Published
2021-05-11 19:37
Modified
2024-08-04 15:49
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in the kernel in NetBSD 7.1. An Access Point (AP) forwards EAPOL frames to other clients even though the sender has not yet successfully authenticated to the AP. This might be abused in projected Wi-Fi networks to launch denial-of-service attacks against connected clients and makes it easier to exploit other vulnerabilities in connected clients.
References
| URL | Tags | |||||||||||||||||||||||||
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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.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- 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.
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