Ubuntu.comUB:CVE-2022-47940CVE-2022-47940
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
5.5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:N/A:P
0.001 Low
EPSS
Percentile
44.9%
An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.18
before 5.18.18. fs/ksmbd/smb2pdu.c lacks length validation in the
non-padding case in smb2_write.
Notes
| Author | Note |
|---|---|
| sbeattie | to be vulnerable, needs ksmbd-tools installed to enable the ksmbd service, which is not installed by default. |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 22.04 | noarch | linux | < 5.15.0-60.66 | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-aws | < 5.15.0-1030.34 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws-5.15 | < 5.15.0-1030.34~20.04.1 | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-azure | < 5.15.0-1033.40 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-azure-5.15 | < 5.15.0-1033.40~20.04.1 | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-azure-fde | < 5.15.0-1033.40.1 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-azure-fde-5.15 | < 5.15.0-1033.40~20.04.1 | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-bluefield | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-gcp | < 5.15.0-1029.36 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-gcp-5.15 | < 5.15.0-1029.36~20.04.1 | UNKNOWN |
References
launchpad.net/bugs/cve/CVE-2022-47940
nvd.nist.gov/vuln/detail/CVE-2022-47940
security-tracker.debian.org/tracker/CVE-2022-47940
ubuntu.com/security/notices/USN-5851-1
ubuntu.com/security/notices/USN-5860-1
ubuntu.com/security/notices/USN-5876-1
ubuntu.com/security/notices/USN-5877-1
www.cve.org/CVERecord?id=CVE-2022-47940
www.openwall.com/lists/oss-security/2022/12/23/10
www.zerodayinitiative.com/advisories/ZDI-22-1691/
Related
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
5.5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:N/A:P
0.001 Low
EPSS
Percentile
44.9%