CVE-2024-29068

2024-07-2520:15:04

CWE-20

canonical

web.nvd.nist.gov

snapd

denial of service

vulnerability

squashfs

file type

snap

cve-2024-29068

CVSS3

6.6

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

5.5

Confidence

High

EPSS

Percentile

9.4%

JSON

In snapd versions prior to 2.62, snapd failed to properly check the file
type when extracting a snap. The snap format is a squashfs file-system
image and so can contain files that are non-regular files (such as pipes
or sockets etc). Various file entries within the snap squashfs image
(such as icons etc) are directly read by snapd when it is extracted. An
attacker who could convince a user to install a malicious snap which
contained non-regular files at these paths could then cause snapd to block
indefinitely trying to read from such files and cause a denial of service.

Affected configurations

Nvd

Node

canonicalsnapdRange<2.62

VendorProductVersionCPE
canonicalsnapd*cpe:2.3:a:canonical:snapd:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
canonical	snapd	*	cpe:2.3:a:canonical:snapd::::::::

CNA Affected

[
  {
    "vendor": "Canonical",
    "product": "snapd",
    "platforms": [
      "Linux"
    ],
    "packageName": "snapd",
    "repo": "https://github.com/snapcore/snapd/",
    "modules": [
      "squashfs"
    ],
    "programFiles": [
      "snap/container.go",
      "snap/snapdir/snapdir.go",
      "snap/squashfs/squashfs.go"
    ],
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "2.62",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unaffected"
  }
]