CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
46.4%
Medium
Canonical Ubuntu
Sri Nagasubramanian discovered that the Samba acl_xattr VFS module incorrectly handled read-only files. When Samba is configured to ignore system ACLs, a remote attacker could possibly use this issue to truncate read-only files. (CVE-2023-4091) Andrew Bartlett discovered that Samba incorrectly handled the DirSync control. A remote attacker with an RODC DC account could possibly use this issue to obtain all domain secrets. (CVE-2023-4154) Andrew Bartlett discovered that Samba incorrectly handled the rpcecho development server. A remote attacker could possibly use this issue to cause Samba to stop responding, resulting in a denial of service. (CVE-2023-42669) Kirin van der Veer discovered that Samba incorrectly handled certain RPC service listeners. A remote attacker could possibly use this issue to cause Samba to start multiple incompatible RPC listeners, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS, and Ubuntu 23.04. (CVE-2023-42670) Update Instructions: Run sudo pro fix USN-6425-1
to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: libwbclient-dev – 2:4.15.13+dfsg-0ubuntu1.5 samba – 2:4.15.13+dfsg-0ubuntu1.5 libnss-winbind – 2:4.15.13+dfsg-0ubuntu1.5 libpam-winbind – 2:4.15.13+dfsg-0ubuntu1.5 libsmbclient – 2:4.15.13+dfsg-0ubuntu1.5 smbclient – 2:4.15.13+dfsg-0ubuntu1.5 winbind – 2:4.15.13+dfsg-0ubuntu1.5 samba-testsuite – 2:4.15.13+dfsg-0ubuntu1.5 python3-samba – 2:4.15.13+dfsg-0ubuntu1.5 samba-common-bin – 2:4.15.13+dfsg-0ubuntu1.5 libwbclient0 – 2:4.15.13+dfsg-0ubuntu1.5 samba-dsdb-modules – 2:4.15.13+dfsg-0ubuntu1.5 samba-dev – 2:4.15.13+dfsg-0ubuntu1.5 libsmbclient-dev – 2:4.15.13+dfsg-0ubuntu1.5 samba-vfs-modules – 2:4.15.13+dfsg-0ubuntu1.5 samba-common – 2:4.15.13+dfsg-0ubuntu1.5 registry-tools – 2:4.15.13+dfsg-0ubuntu1.5 samba-libs – 2:4.15.13+dfsg-0ubuntu1.5 ctdb – 2:4.15.13+dfsg-0ubuntu1.5 No subscription required
CVEs contained in this USN include: CVE-2023-4091, CVE-2023-4154, CVE-2023-42669, CVE-2023-42670.
Severity is medium unless otherwise noted.
Users of affected products are strongly encouraged to follow the mitigations below. The Cloud Foundry project recommends upgrading the following releases:
2023-11-09: Initial vulnerability report published.
Vendor | Product | Version | CPE |
---|---|---|---|
cloudfoundry | cflinuxfs4 | * | cpe:2.3:a:cloudfoundry:cflinuxfs4:*:*:*:*:*:*:*:* |
cloudfoundry | cf-deployment | * | cpe:2.3:a:cloudfoundry:cf-deployment:*:*:*:*:*:*:*:* |
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
46.4%