Overview
- Description
- The pygrub boot loader emulator in Xen, when nul-delimited output format is requested, allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host via NUL bytes in the bootloader configuration file.
- Source
- cve@mitre.org
- NVD status
- Modified
Risk scores
CVSS 3.0
- Type
- Primary
- Base score
- 7.5
- Impact score
- 5.8
- Exploitability score
- 1.1
- Vector string
- CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
- Severity
- HIGH
CVSS 2.0
- Type
- Primary
- Base score
- 4.6
- Impact score
- 6.4
- Exploitability score
- 3.9
- Vector string
- AV:L/AC:L/Au:N/C:P/I:P/A:P
Weaknesses
- nvd@nist.gov
- CWE-20
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C2B9CCC2-BAC5-4A65-B8D4-4B71EBBA0C2F"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:citrix:xenserver:6.0.2:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5FCF191B-971A-4945-AB14-08091689BE2F"
},
{
"criteria": "cpe:2.3:a:citrix:xenserver:6.2.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "BCEA97B9-A443-4F87-81B4-B3F0E94AC18E"
},
{
"criteria": "cpe:2.3:a:citrix:xenserver:6.5:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "56434D13-7A7B-495C-A135-2688C706A065"
},
{
"criteria": "cpe:2.3:a:citrix:xenserver:7.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "405F950F-0772-41A3-8B72-B67151CC1376"
}
],
"operator": "OR"
}
]
}
]