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RedhatCVE-2023-5215

HistorySep 28, 2023 - 2:15 p.m.

CVE-2023-5215

2023-09-2814:15:26

CWE-252

CWE-241

redhat

web.nvd.nist.gov

109

flaw

libnbd

server

block size

nbd spec

64-bit

unsigned value

application crash

unintended behavior

nbd_get_size()

cve-2023-5215

CVSS3

6.5

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

6.1

Confidence

High

EPSS

Percentile

10.3%

JSON

A flaw was found in libnbd. A server can reply with a block size larger than 2^63 (the NBD spec states the size is a 64-bit unsigned value). This issue could lead to an application crash or other unintended behavior for NBD clients that doesn’t treat the return value of the nbd_get_size() function correctly.

Affected configurations

Nvd

Node

redhatlibnbdRange<1.18.0

redhatenterprise_linuxMatch8.0

redhatenterprise_linuxMatch9.0

VendorProductVersionCPE
redhatlibnbd*cpe:2.3:a:redhat:libnbd:*:*:*:*:*:*:*:*
redhatenterprise_linux8.0cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
redhatenterprise_linux9.0cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
redhat	libnbd	*	cpe:2.3:a:redhat:libnbd::::::::
redhat	enterprise_linux	8.0	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
redhat	enterprise_linux	9.0	cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*

CNA Affected

[
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "libnbd",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:1.18.1-3.el9",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:enterprise_linux:9::appstream",
      "cpe:/a:redhat:enterprise_linux:9::crb"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "virt:rhel/libnbd",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:8"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8 Advanced Virtualization",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "virt:av/libnbd",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:advanced_virtualization:8::el8"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8 Advanced Virtualization",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "virt-devel:av/libnbd",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:advanced_virtualization:8::el8"
    ]
  }
]