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WID-SEC-W-2024-0903
Vulnerability from csaf_certbund
Published
2024-04-16 22:00
Modified
2024-10-09 22:00
Summary
Red Hat Enterprise Linux (shim): Mehrere Schwachstellen
Notes
Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.
Produktbeschreibung
Red Hat Enterprise Linux (RHEL) ist eine populäre Linux-Distribution.
Angriff
Ein lokaler Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux in "shim" ausnutzen, um einen Denial-of-Service-Zustand zu erzeugen, vertrauliche Informationen offenzulegen oder beliebigen Code auszuführen.
Betroffene Betriebssysteme
- Linux
{
"document": {
"aggregate_severity": {
"text": "hoch"
},
"category": "csaf_base",
"csaf_version": "2.0",
"distribution": {
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "de-DE",
"notes": [
{
"category": "legal_disclaimer",
"text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
},
{
"category": "description",
"text": "Red Hat Enterprise Linux (RHEL) ist eine popul\u00e4re Linux-Distribution.",
"title": "Produktbeschreibung"
},
{
"category": "summary",
"text": "Ein lokaler Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux in \"shim\" ausnutzen, um einen Denial-of-Service-Zustand zu erzeugen, vertrauliche Informationen offenzulegen oder beliebigen Code auszuf\u00fchren.",
"title": "Angriff"
},
{
"category": "general",
"text": "- Linux",
"title": "Betroffene Betriebssysteme"
}
],
"publisher": {
"category": "other",
"contact_details": "csaf-provider@cert-bund.de",
"name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
"namespace": "https://www.bsi.bund.de"
},
"references": [
{
"category": "self",
"summary": "WID-SEC-W-2024-0903 - CSAF Version",
"url": "https://wid.cert-bund.de/.well-known/csaf/white/2024/wid-sec-w-2024-0903.json"
},
{
"category": "self",
"summary": "WID-SEC-2024-0903 - Portal Version",
"url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2024-0903"
},
{
"category": "external",
"summary": "Red Hat Security Advisory vom 2024-04-16",
"url": "https://access.redhat.com/errata/RHSA-2024:1834"
},
{
"category": "external",
"summary": "Red Hat Security Advisory vom 2024-04-16",
"url": "https://access.redhat.com/errata/RHSA-2024:1835"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2024:1873 vom 2024-04-18",
"url": "https://access.redhat.com/errata/RHSA-2024:1873"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2024:1883 vom 2024-04-18",
"url": "https://access.redhat.com/errata/RHSA-2024:1883"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2024:1876 vom 2024-04-18",
"url": "https://access.redhat.com/errata/RHSA-2024:1876"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2024:1903 vom 2024-04-18",
"url": "https://access.redhat.com/errata/RHSA-2024:1903"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2024:1902 vom 2024-04-18",
"url": "https://access.redhat.com/errata/RHSA-2024:1902"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2024:1368-1 vom 2024-04-22",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2024-April/018392.html"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2024:1959 vom 2024-04-23",
"url": "https://access.redhat.com/errata/RHSA-2024:1959"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2024-1903 vom 2024-04-24",
"url": "http://linux.oracle.com/errata/ELSA-2024-1903.html"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2024-1902 vom 2024-04-26",
"url": "https://linux.oracle.com/errata/ELSA-2024-1902.html"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2024:2086 vom 2024-04-29",
"url": "https://access.redhat.com/errata/RHSA-2024:2086"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2024-1959 vom 2024-05-03",
"url": "https://linux.oracle.com/errata/ELSA-2024-1959.html"
},
{
"category": "external",
"summary": "Debian Security Advisory DLA-3813 vom 2024-05-14",
"url": "https://lists.debian.org/debian-lts-announce/2024/05/msg00009.html"
},
{
"category": "external",
"summary": "Dell Security Advisory DSA-2024-422 vom 2024-10-10",
"url": "https://www.dell.com/support/kbdoc/de-de/000234730/dsa-2024-422-security-update-for-dell-networker-vproxy-multiple-component-vulnerabilities"
}
],
"source_lang": "en-US",
"title": "Red Hat Enterprise Linux (shim): Mehrere Schwachstellen",
"tracking": {
"current_release_date": "2024-10-09T22:00:00.000+00:00",
"generator": {
"date": "2024-10-10T11:52:35.794+00:00",
"engine": {
"name": "BSI-WID",
"version": "1.3.8"
}
},
"id": "WID-SEC-W-2024-0903",
"initial_release_date": "2024-04-16T22:00:00.000+00:00",
"revision_history": [
{
"date": "2024-04-16T22:00:00.000+00:00",
"number": "1",
"summary": "Initiale Fassung"
},
{
"date": "2024-04-17T22:00:00.000+00:00",
"number": "2",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2024-04-22T22:00:00.000+00:00",
"number": "3",
"summary": "Neue Updates von SUSE und Red Hat aufgenommen"
},
{
"date": "2024-04-24T22:00:00.000+00:00",
"number": "4",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2024-04-25T22:00:00.000+00:00",
"number": "5",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2024-04-28T22:00:00.000+00:00",
"number": "6",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2024-05-02T22:00:00.000+00:00",
"number": "7",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2024-05-14T22:00:00.000+00:00",
"number": "8",
"summary": "Neue Updates von Debian aufgenommen"
},
{
"date": "2024-10-09T22:00:00.000+00:00",
"number": "9",
"summary": "Neue Updates von Dell aufgenommen"
}
],
"status": "final",
"version": "9"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "Debian Linux",
"product": {
"name": "Debian Linux",
"product_id": "2951",
"product_identification_helper": {
"cpe": "cpe:/o:debian:debian_linux:-"
}
}
}
],
"category": "vendor",
"name": "Debian"
},
{
"branches": [
{
"category": "product_name",
"name": "Oracle Linux",
"product": {
"name": "Oracle Linux",
"product_id": "T004914",
"product_identification_helper": {
"cpe": "cpe:/o:oracle:linux:-"
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}
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"category": "vendor",
"name": "Oracle"
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{
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}
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{
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"product_id": "T034283",
"product_identification_helper": {
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{
"branches": [
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"product_identification_helper": {
"cpe": "cpe:/o:suse:suse_linux:-"
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}
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}
]
},
"vulnerabilities": [
{
"cve": "CVE-2023-40546",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen in Red Hat Enterprise Linux. Dieser Fehler besteht in der Shim-Komponente aufgrund eines Heap-basierten Puffer\u00fcberlaufs und eines Out-of-bounds-Read-Problems. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand zu verursachen."
}
],
"product_status": {
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"T002207",
"T034282",
"67646",
"T034283",
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]
},
"release_date": "2024-04-16T22:00:00.000+00:00",
"title": "CVE-2023-40546"
},
{
"cve": "CVE-2023-40548",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen in Red Hat Enterprise Linux. Dieser Fehler besteht in der Shim-Komponente aufgrund eines Heap-basierten Puffer\u00fcberlaufs und eines Out-of-bounds-Read-Problems. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand zu verursachen."
}
],
"product_status": {
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"T002207",
"T034282",
"67646",
"T034283",
"T004914"
]
},
"release_date": "2024-04-16T22:00:00.000+00:00",
"title": "CVE-2023-40548"
},
{
"cve": "CVE-2023-40549",
"notes": [
{
"category": "description",
"text": "Es bestehen mehrere Schwachstellen in Red Hat Enterprise Linux. Dieser Fehler besteht in der Shim-Komponente aufgrund eines Heap-basierten Puffer\u00fcberlaufs und eines Out-of-bounds-Read-Problems. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um einen Denial-of-Service-Zustand zu verursachen."
}
],
"product_status": {
"known_affected": [
"2951",
"T002207",
"T034282",
"67646",
"T034283",
"T004914"
]
},
"release_date": "2024-04-16T22:00:00.000+00:00",
"title": "CVE-2023-40549"
},
{
"cve": "CVE-2023-40547",
"notes": [
{
"category": "description",
"text": "Es besteht eine Schwachstelle in Red Hat Enterprise Linux. Dieser Fehler besteht in der Shim-Komponente aufgrund eines Out-of-bounds-Write-Problems, das eine vollst\u00e4ndige Kompromittierung des Systems erm\u00f6glicht. Ein benachbarter, anonymer Angreifer kann diese Schwachstelle zur Ausf\u00fchrung von beliebigem Code ausnutzen."
}
],
"product_status": {
"known_affected": [
"2951",
"T002207",
"T034282",
"67646",
"T034283",
"T004914"
]
},
"release_date": "2024-04-16T22:00:00.000+00:00",
"title": "CVE-2023-40547"
},
{
"cve": "CVE-2023-40550",
"notes": [
{
"category": "description",
"text": "Es besteht eine Schwachstelle in Red Hat Enterprise Linux. Dieser Fehler besteht in der Shim-Komponente w\u00e4hrend der Validierung der SBAT-Informationen, was dazu f\u00fchrt, dass sensible Daten w\u00e4hrend der Boot-Phase des Systems offengelegt werden. Ein lokaler Angreifer kann diese Schwachstelle ausnutzen, um vertrauliche Informationen offenzulegen."
}
],
"product_status": {
"known_affected": [
"2951",
"T002207",
"T034282",
"67646",
"T034283",
"T004914"
]
},
"release_date": "2024-04-16T22:00:00.000+00:00",
"title": "CVE-2023-40550"
},
{
"cve": "CVE-2023-40551",
"notes": [
{
"category": "description",
"text": "Es besteht eine Schwachstelle in Red Hat Enterprise Linux. Dieser Fehler besteht im MZ-Bin\u00e4rformat in der Shim-Komponente aufgrund eines Out-of-bounds-Read-Problems. Ein lokaler, privilegierter Angreifer kann diese Schwachstelle ausnutzen, um einen Denial-of-Service-Zustand zu verursachen."
}
],
"product_status": {
"known_affected": [
"2951",
"T002207",
"T034282",
"67646",
"T034283",
"T004914"
]
},
"release_date": "2024-04-16T22:00:00.000+00:00",
"title": "CVE-2023-40551"
}
]
}
CVE-2023-40549 (GCVE-0-2023-40549)
Vulnerability from cvelistv5
Published
2024-01-29 16:29
Modified
2025-10-01 08:53
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-125 - Out-of-bounds Read
Summary
An out-of-bounds read flaw was found in Shim due to the lack of proper boundary verification during the load of a PE binary. This flaw allows an attacker to load a crafted PE binary, triggering the issue and crashing Shim, resulting in a denial of service.
References
| URL | Tags | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 7 |
Unaffected: 0:15.8-3.el7 < * cpe:/o:redhat:enterprise_linux:7::client cpe:/o:redhat:enterprise_linux:7::server cpe:/o:redhat:enterprise_linux:7::workstation |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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CVE-2023-40548 (GCVE-0-2023-40548)
Vulnerability from cvelistv5
Published
2024-01-29 14:53
Modified
2025-10-10 00:23
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-787 - Out-of-bounds Write
Summary
A buffer overflow was found in Shim in the 32-bit system. The overflow happens due to an addition operation involving a user-controlled value parsed from the PE binary being used by Shim. This value is further used for memory allocation operations, leading to a heap-based buffer overflow. This flaw causes memory corruption and can lead to a crash or data integrity issues during the boot phase.
References
| URL | Tags | ||||||||||||||||||||||||||||||||||
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 7 |
Unaffected: 0:15.8-3.el7 < * cpe:/o:redhat:enterprise_linux:7::workstation cpe:/o:redhat:enterprise_linux:7::client cpe:/o:redhat:enterprise_linux:7::server |
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|
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CVE-2023-40550 (GCVE-0-2023-40550)
Vulnerability from cvelistv5
Published
2024-01-29 16:29
Modified
2025-10-01 08:53
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-125 - Out-of-bounds Read
Summary
An out-of-bounds read flaw was found in Shim when it tried to validate the SBAT information. This issue may expose sensitive data during the system's boot phase.
References
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 7 |
Unaffected: 0:15.8-3.el7 < * cpe:/o:redhat:enterprise_linux:7::client cpe:/o:redhat:enterprise_linux:7::workstation cpe:/o:redhat:enterprise_linux:7::server |
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CVE-2023-40546 (GCVE-0-2023-40546)
Vulnerability from cvelistv5
Published
2024-01-29 16:29
Modified
2025-10-01 08:53
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
A flaw was found in Shim when an error happened while creating a new ESL variable. If Shim fails to create the new variable, it tries to print an error message to the user; however, the number of parameters used by the logging function doesn't match the format string used by it, leading to a crash under certain circumstances.
References
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 7 |
Unaffected: 0:15.8-3.el7 < * cpe:/o:redhat:enterprise_linux:7::server cpe:/o:redhat:enterprise_linux:7::client cpe:/o:redhat:enterprise_linux:7::workstation |
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|
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CVE-2023-40551 (GCVE-0-2023-40551)
Vulnerability from cvelistv5
Published
2024-01-29 16:46
Modified
2025-10-01 08:53
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-125 - Out-of-bounds Read
Summary
A flaw was found in the MZ binary format in Shim. An out-of-bounds read may occur, leading to a crash or possible exposure of sensitive data during the system's boot phase.
References
| URL | Tags | ||||||||||||||||||||||||||||||||||
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 7 |
Unaffected: 0:15.8-3.el7 < * cpe:/o:redhat:enterprise_linux:7::client cpe:/o:redhat:enterprise_linux:7::workstation cpe:/o:redhat:enterprise_linux:7::server |
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|
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CVE-2023-40547 (GCVE-0-2023-40547)
Vulnerability from cvelistv5
Published
2024-01-25 15:54
Modified
2025-10-01 08:50
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-787 - Out-of-bounds Write
Summary
A remote code execution vulnerability was found in Shim. The Shim boot support trusts attacker-controlled values when parsing an HTTP response. This flaw allows an attacker to craft a specific malicious HTTP request, leading to a completely controlled out-of-bounds write primitive and complete system compromise. This flaw is only exploitable during the early boot phase, an attacker needs to perform a Man-in-the-Middle or compromise the boot server to be able to exploit this vulnerability successfully.
References
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Impacted products
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| Red Hat | Red Hat Enterprise Linux 7 |
Unaffected: 0:15.8-3.el7 < * cpe:/o:redhat:enterprise_linux:7::client cpe:/o:redhat:enterprise_linux:7::server cpe:/o:redhat:enterprise_linux:7::workstation |
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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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