mirror of
https://github.com/fkie-cad/nvd-json-data-feeds.git
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239 lines
11 KiB
JSON
239 lines
11 KiB
JSON
{
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"id": "CVE-2023-52574",
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"published": "2024-03-02T22:15:49.393",
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"lastModified": "2024-12-11T15:30:26.120",
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"vulnStatus": "Analyzed",
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"cveTags": [],
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nteam: fix null-ptr-deref when team device type is changed\n\nGet a null-ptr-deref bug as follows with reproducer [1].\n\nBUG: kernel NULL pointer dereference, address: 0000000000000228\n...\nRIP: 0010:vlan_dev_hard_header+0x35/0x140 [8021q]\n...\nCall Trace:\n <TASK>\n ? __die+0x24/0x70\n ? page_fault_oops+0x82/0x150\n ? exc_page_fault+0x69/0x150\n ? asm_exc_page_fault+0x26/0x30\n ? vlan_dev_hard_header+0x35/0x140 [8021q]\n ? vlan_dev_hard_header+0x8e/0x140 [8021q]\n neigh_connected_output+0xb2/0x100\n ip6_finish_output2+0x1cb/0x520\n ? nf_hook_slow+0x43/0xc0\n ? ip6_mtu+0x46/0x80\n ip6_finish_output+0x2a/0xb0\n mld_sendpack+0x18f/0x250\n mld_ifc_work+0x39/0x160\n process_one_work+0x1e6/0x3f0\n worker_thread+0x4d/0x2f0\n ? __pfx_worker_thread+0x10/0x10\n kthread+0xe5/0x120\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x34/0x50\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1b/0x30\n\n[1]\n$ teamd -t team0 -d -c '{\"runner\": {\"name\": \"loadbalance\"}}'\n$ ip link add name t-dummy type dummy\n$ ip link add link t-dummy name t-dummy.100 type vlan id 100\n$ ip link add name t-nlmon type nlmon\n$ ip link set t-nlmon master team0\n$ ip link set t-nlmon nomaster\n$ ip link set t-dummy up\n$ ip link set team0 up\n$ ip link set t-dummy.100 down\n$ ip link set t-dummy.100 master team0\n\nWhen enslave a vlan device to team device and team device type is changed\nfrom non-ether to ether, header_ops of team device is changed to\nvlan_header_ops. That is incorrect and will trigger null-ptr-deref\nfor vlan->real_dev in vlan_dev_hard_header() because team device is not\na vlan device.\n\nCache eth_header_ops in team_setup(), then assign cached header_ops to\nheader_ops of team net device when its type is changed from non-ether\nto ether to fix the bug."
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},
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{
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"lang": "es",
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"value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: equipo: corrige null-ptr-deref cuando se cambia el tipo de dispositivo del equipo. Obtiene un error null-ptr-deref de la siguiente manera con el reproductor [1]. ERROR: desreferencia del puntero NULL del kernel, direcci\u00f3n: 0000000000000228... RIP: 0010:vlan_dev_hard_header+0x35/0x140 [8021q]... Seguimiento de llamadas: ? __morir+0x24/0x70 ? page_fault_oops+0x82/0x150? exc_page_fault+0x69/0x150? asm_exc_page_fault+0x26/0x30? vlan_dev_hard_header+0x35/0x140 [8021q] ? vlan_dev_hard_header+0x8e/0x140 [8021q] neigh_connected_output+0xb2/0x100 ip6_finish_output2+0x1cb/0x520 ? nf_hook_slow+0x43/0xc0? ip6_mtu+0x46/0x80 ip6_finish_output+0x2a/0xb0 mld_sendpack+0x18f/0x250 mld_ifc_work+0x39/0x160 Process_one_work+0x1e6/0x3f0 trabajador_thread+0x4d/0x2f0? __pfx_worker_thread+0x10/0x10 kthread+0xe5/0x120 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x34/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1b/0x30 [1] $ teamd -t team0 -d -c '{\"runner\": {\"name\": \"loadbalance\"}}' $ enlace ip agregar nombre t-dummy tipo dummy $ enlace ip agregar enlace t-dummy nombre t-dummy.100 tipo vlan id 100 $ enlace ip agregar nombre t-nlmon tipo nlmon $ conjunto de enlaces ip t-nlmon master team0 $ conjunto de enlaces ip t-nlmon nomaster $ conjunto de enlaces ip t- dummy up $ ip link set team0 up $ ip link set t-dummy.100 down $ ip link set t-dummy.100 master team0 Cuando se esclaviza un dispositivo VLAN a un dispositivo de equipo y el tipo de dispositivo de equipo se cambia de no ether a ether, header_ops del dispositivo del equipo se cambia a vlan_header_ops. Eso es incorrecto y activar\u00e1 null-ptr-deref para vlan->real_dev en vlan_dev_hard_header() porque el dispositivo del equipo no es un dispositivo vlan. Almacene en cach\u00e9 eth_header_ops en team_setup(), luego asigne header_ops almacenados en cach\u00e9 a header_ops del dispositivo team net cuando su tipo cambie de no ether a ether para corregir el error."
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}
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],
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"metrics": {
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"cvssMetricV31": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"cvssData": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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"baseScore": 5.5,
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"baseSeverity": "MEDIUM",
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"attackVector": "LOCAL",
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"attackComplexity": "LOW",
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"privilegesRequired": "LOW",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"availabilityImpact": "HIGH"
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},
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"exploitabilityScore": 1.8,
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"impactScore": 3.6
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}
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]
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},
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"weaknesses": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"description": [
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{
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"lang": "en",
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"value": "CWE-476"
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}
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]
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}
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],
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"configurations": [
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"nodes": [
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"operator": "OR",
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