gsd-2021-33624
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
In kernel/bpf/verifier.c in the Linux kernel before 5.12.13, a branch can be mispredicted (e.g., because of type confusion) and consequently an unprivileged BPF program can read arbitrary memory locations via a side-channel attack, aka CID-9183671af6db.
Aliases
Aliases
CVE-2021-33624


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-33624",
    "description": "In kernel/bpf/verifier.c in the Linux kernel before 5.12.13, a branch can be mispredicted (e.g., because of type confusion) and consequently an unprivileged BPF program can read arbitrary memory locations via a side-channel attack, aka CID-9183671af6db.",
    "id": "GSD-2021-33624",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-33624.html",
      "https://ubuntu.com/security/CVE-2021-33624",
      "https://advisories.mageia.org/CVE-2021-33624.html",
      "https://security.archlinux.org/CVE-2021-33624"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-33624"
      ],
      "details": "In kernel/bpf/verifier.c in the Linux kernel before 5.12.13, a branch can be mispredicted (e.g., because of type confusion) and consequently an unprivileged BPF program can read arbitrary memory locations via a side-channel attack, aka CID-9183671af6db.",
      "id": "GSD-2021-33624",
      "modified": "2023-12-13T01:23:18.124883Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2021-33624",
        "STATE": "PUBLIC"
      },
      "affects": {
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          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
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                    "version": {
                      "version_data": [
                        {
                          "version_value": "n/a"
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          }
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            "name": "https://www.usenix.org/conference/usenixsecurity21/presentation/kirzner",
            "refsource": "MISC",
            "url": "https://www.usenix.org/conference/usenixsecurity21/presentation/kirzner"
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            "name": "http://www.openwall.com/lists/oss-security/2021/06/21/1",
            "refsource": "CONFIRM",
            "url": "http://www.openwall.com/lists/oss-security/2021/06/21/1"
          },
          {
            "name": "https://github.com/torvalds/linux/commit/9183671af6dbf60a1219371d4ed73e23f43b49db",
            "refsource": "CONFIRM",
            "url": "https://github.com/torvalds/linux/commit/9183671af6dbf60a1219371d4ed73e23f43b49db"
          },
          {
            "name": "[debian-lts-announce] 20211015 [SECURITY] [DLA 2785-1] linux-4.19 security update",
            "refsource": "MLIST",
            "url": "https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
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                "cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "5.12.13",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
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        "description": {
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            }
          ]
        },
        "problemtype": {
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                  "value": "CWE-203"
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        },
        "references": {
          "reference_data": [
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              "name": "https://www.usenix.org/conference/usenixsecurity21/presentation/kirzner",
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            },
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            },
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 4.7,
            "confidentialityImpact": "COMPLETE",
            "integrityImpact": "NONE",
            "vectorString": "AV:L/AC:M/Au:N/C:C/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 3.4,
          "impactScore": 6.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 4.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 1.0,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2021-11-12T20:15Z",
      "publishedDate": "2021-06-23T16:15Z"
    }
  }
}


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