Overview
- Description
- A race condition existed in the snapd 2.54.2 snap-confine binary when preparing a private mount namespace for a snap. This could allow a local attacker to gain root privileges by bind-mounting their own contents inside the snap's private mount namespace and causing snap-confine to execute arbitrary code and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1
- Source
- security@ubuntu.com
- NVD status
- Modified
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 7.8
- Impact score
- 6
- Exploitability score
- 1.1
- Vector string
- CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
- Severity
- HIGH
CVSS 2.0
- Type
- Primary
- Base score
- 6.9
- Impact score
- 10
- Exploitability score
- 3.4
- Vector string
- AV:L/AC:M/Au:N/C:C/I:C/A:C
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:canonical:snapd:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "90115CE1-12C4-4504-A1A2-9C118694C398",
"versionEndIncluding": "2.54.2"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
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"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
"vulnerable": true,
"matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D"
},
{
"criteria": "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*",
"vulnerable": true,
"matchCriteriaId": "902B8056-9E37-443B-8905-8AA93E2447FB"
},
{
"criteria": "cpe:2.3:o:canonical:ubuntu_linux:21.10:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "AAE4D2D0-CEEB-416F-8BC5-A7987DF56190"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
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"cpeMatch": [
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"vulnerable": true,
"matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835"
},
{
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"vulnerable": true,
"matchCriteriaId": "80E516C0-98A4-4ADE-B69F-66A772E2BAAA"
}
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"operator": "OR"
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},
{
"nodes": [
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"cpeMatch": [
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"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
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},
{
"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED"
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],
"operator": "OR"
}
]
}
]