Overview
- Description
- In FreeBSD 12.0-STABLE before r349805, 12.0-RELEASE before 12.0-RELEASE-p8, 11.3-STABLE before r349806, 11.3-RELEASE before 11.3-RELEASE-p1, and 11.2-RELEASE before 11.2-RELEASE-p12, code which handles close of a descriptor created by posix_openpt fails to undo a signal configuration. This causes an incorrect signal to be raised leading to a write after free of kernel memory allowing a malicious user to gain root privileges or escape a jail.
- Source
- secteam@freebsd.org
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 7.8
- Impact score
- 5.9
- Exploitability score
- 1.8
- Vector string
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Severity
- HIGH
CVSS 2.0
- Type
- Primary
- Base score
- 7.2
- Impact score
- 10
- Exploitability score
- 3.9
- Vector string
- AV:L/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
- nvd@nist.gov
- CWE-416
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:freebsd:freebsd:11.0:-:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B4DCF469-DF3A-49F3-9621-F5253893F273"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:11.2:-:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "3ACD1D8D-B3BC-4E99-B846-90A4071DB87B"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:11.3:-:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F35957CE-AF9F-40CA-BDD1-FA6A0E73783F"
},
{
"criteria": "cpe:2.3:o:freebsd:freebsd:12.0:-:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "826B53C2-517F-4FC6-92E8-E7FCB24F91B4"
}
],
"operator": "OR"
}
]
}
]