Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU60185
Risk: Low
CVSSv3.1: 4.1 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-0336
CWE-ID:
CWE-345 - Insufficient Verification of Data Authenticity
Exploit availability: No
DescriptionThe vulnerability allows a local user to impersonate arbitrary services.
The vulnerability exists due to Samba AD DC relies only on SPN (service principals name) to identify services on the network. An attacker with ability to modify SPNs can bypass implemented protection and cause a denial of service condition by adding an SPN that matches an existing service or impersonate services on the network.
Install updates from vendor's repository.
Vulnerable software versionsopenEuler: 20.03 LTS SP1 - 20.03 LTS SP3
samba-vfs-glusterfs: before 4.11.12-11
samba-pidl: before 4.11.12-11
samba-client: before 4.11.12-11
libwbclient: before 4.11.12-11
python3-samba: before 4.11.12-11
libsmbclient: before 4.11.12-11
ctdb-tests: before 4.11.12-11
samba-test: before 4.11.12-11
samba-debugsource: before 4.11.12-11
samba-common: before 4.11.12-11
python3-samba-dc: before 4.11.12-11
samba-help: before 4.11.12-11
samba-dc-provision: before 4.11.12-11
samba-winbind-krb5-locator: before 4.11.12-11
samba-debuginfo: before 4.11.12-11
samba-krb5-printing: before 4.11.12-11
samba-winbind-modules: before 4.11.12-11
samba-dc-bind-dlz: before 4.11.12-11
samba-devel: before 4.11.12-11
libsmbclient-devel: before 4.11.12-11
samba-common-tools: before 4.11.12-11
libwbclient-devel: before 4.11.12-11
ctdb: before 4.11.12-11
python3-samba-test: before 4.11.12-11
samba-winbind-clients: before 4.11.12-11
samba-winbind: before 4.11.12-11
samba-libs: before 4.11.12-11
samba-dc: before 4.11.12-11
samba: before 4.11.12-11
External linkshttp://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1529
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.