Debian Security Bug TrackerDEBIANCVE:CVE-2023-1076CVE-2023-1076
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
1.7 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:L/AC:L/Au:S/C:N/I:P/A:N
0.0004 Low
EPSS
Percentile
14.6%
A flaw was found in the Linux Kernel. The tun/tap sockets have their socket UID hardcoded to 0 due to a type confusion in their initialization function. While it will be often correct, as tuntap devices require CAP_NET_ADMIN, it may not always be the case, e.g., a non-root user only having that capability. This would make tun/tap sockets being incorrectly treated in filtering/routing decisions, possibly bypassing network filters.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | linux | < 6.1.20-1 | linux_6.1.20-1_all.deb |
| Debian | 11 | all | linux | < 5.10.178-1 | linux_5.10.178-1_all.deb |
| Debian | 10 | all | linux | <= 4.19.249-2 | linux_4.19.249-2_all.deb |
| Debian | 999 | all | linux | < 6.1.20-1 | linux_6.1.20-1_all.deb |
| Debian | 13 | all | linux | < 6.1.20-1 | linux_6.1.20-1_all.deb |
| Debian | 10 | all | linux-5.10 | < 5.10.178-3~deb10u1 | linux-5.10_5.10.178-3~deb10u1_all.deb |
Related
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
1.7 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:L/AC:L/Au:S/C:N/I:P/A:N
0.0004 Low
EPSS
Percentile
14.6%