CVE-2024-27434

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No VM, IOMMU, or sandbox boundary is crossed.\nC:N - The defect is an incorrect flag bit in a firmware command; there is no out-of-bounds read, uninitialized data disclosure, or leak of kernel memory to the attacker.\nI:L - The group key is installed in firmware with the wrong protection semantics \u2014 flagged as en/decrypting management frames when a non-iGTK group key must not be \u2014 so management-frame protection state for the GTK is incorrect, which any group member could attempt to abuse for forged \"protected\" broadcast management frames. This is bounded, not arbitrary, modification.\nA:H - The malformed TKIP+MFP key command asserts the firmware, producing a SW-error dump and a full NIC restart with loss of wireless connectivity, and can be re-triggered on every reconnect attempt for a persistent denial of service. 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We would send the GTK with cipher = TKIP and MFP which is of course\nnot possible."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: iwlwifi: mvm: no configure el indicador MFP para GTK El firmware no necesita el indicador MFP para GTK, incluso puede provocar que el firmware falle. en caso de que el AP est\u00e9 configurado con: cifrado de grupo TKIP y MFPC. Enviar\u00edamos el GTK con cifrado = TKIP y MFP, lo cual, por supuesto, no es posible."}], "id": "CVE-2024-27434", "lastModified": "2026-08-04T11:17:49.687", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.2, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-27434", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-05-17T17:16:46.787202Z", "version": "2.0.3"}}]}, "published": "2024-05-17T13:15:58.000", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/40405cbb20eb6541c603e7b3d54ade0a7be9d715"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/60f6d5fc84a9fd26528a24d8a267fc6a6698b628"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b4f1b0b3b91762edd19bf9d3b2e4c3a0740501f8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e35f316bce9e5733c9826120c1838f4c447b2c4c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/40405cbb20eb6541c603e7b3d54ade0a7be9d715"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/60f6d5fc84a9fd26528a24d8a267fc6a6698b628"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b4f1b0b3b91762edd19bf9d3b2e4c3a0740501f8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e35f316bce9e5733c9826120c1838f4c447b2c4c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:5102", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.16.1.rt7.357.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-08-08T00:00:00Z"}, {"advisory": "RHSA-2024:5101", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.16.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-08-08T00:00:00Z"}, {"advisory": "RHSA-2024:5363", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.31.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-08-15T00:00:00Z"}, {"advisory": "RHSA-2024:5363", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.31.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-08-15T00:00:00Z"}], "bugzilla": {"description": "kernel: wifi: iwlwifi: mvm: don't set the MFP flag for the GTK", "id": "2281133", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2281133"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nwifi: iwlwifi: mvm: don't set the MFP flag for the GTK\nThe firmware doesn't need the MFP flag for the GTK, it can even make the\nfirmware crash. in case the AP is configured with: group cipher TKIP and\nMFPC. We would send the GTK with cipher = TKIP and MFP which is of course\nnot possible.", "CVE-2024-27434 is a flaw in the Linux kernel\u2019s iwlwifi driver related to handling Management Frame Protection (MFP) in certain Wi-Fi configurations. When connecting to an access point using TKIP as the group cipher, the driver incorrectly applies the MFP flag to the Group Temporal Key (GTK), which is not supported in this context. This can result in firmware crashes and instability. The issue has been fixed by ensuring the driver does not set the MFP flag for incompatible group ciphers like TKIP. Updating to a patched kernel version is recommended to resolve this vulnerability."], "name": "CVE-2024-27434", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-27434\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-27434\nhttps://lore.kernel.org/linux-cve-announce/2024051756-CVE-2024-27434-ac61@gregkh/T"], "threat_severity": "Moderate"}

{}