Anolis OS update for samba (Anolis OS 8.2)
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-20254 |
| CWE-ID | CWE-125 |
| Exploitation vector | Local network |
| Public exploit | N/A |
| Vulnerable software |
Anolis OS Operating systems & Components / Operating system samba-pidl Operating systems & Components / Operating system package or component samba-common Operating systems & Components / Operating system package or component samba-winbind-modules Operating systems & Components / Operating system package or component samba-winbind-krb5-locator Operating systems & Components / Operating system package or component samba-winbind-clients Operating systems & Components / Operating system package or component samba-winbind Operating systems & Components / Operating system package or component samba-test-libs Operating systems & Components / Operating system package or component samba-test Operating systems & Components / Operating system package or component samba-libs Operating systems & Components / Operating system package or component samba-krb5-printing Operating systems & Components / Operating system package or component samba-common-tools Operating systems & Components / Operating system package or component samba-common-libs Operating systems & Components / Operating system package or component samba-client-libs Operating systems & Components / Operating system package or component samba-client Operating systems & Components / Operating system package or component samba Operating systems & Components / Operating system package or component python3-samba-test Operating systems & Components / Operating system package or component python3-samba Operating systems & Components / Operating system package or component libwbclient Operating systems & Components / Operating system package or component libsmbclient Operating systems & Components / Operating system package or component ctdb-tests Operating systems & Components / Operating system package or component ctdb Operating systems & Components / Operating system package or component |
| Vendor | OpenAnolis |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Out-of-bounds read
EUVDB-ID: #VU52748
Risk: Medium
CVSSv4.0: 0.5 [CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-20254
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote user to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition when mapping Windows group identities (SIDs) into unix group identities (gids), which resulted into negative idmap cache entries created in the Samba server process token. An attacker who can manage to trigger the vulnerability can crash the Samba server or potentially perform unauthorized actions on the system.
Install updates from vendor's repository.
Vulnerable software versionsAnolis OS: 8
samba-pidl: before 4.11.2-15
samba-common: before 4.11.2-15
samba-winbind-modules: before 4.11.2-15
samba-winbind-krb5-locator: before 4.11.2-15
samba-winbind-clients: before 4.11.2-15
samba-winbind: before 4.11.2-15
samba-test-libs: before 4.11.2-15
samba-test: before 4.11.2-15
samba-libs: before 4.11.2-15
samba-krb5-printing: before 4.11.2-15
samba-common-tools: before 4.11.2-15
samba-common-libs: before 4.11.2-15
samba-client-libs: before 4.11.2-15
samba-client: before 4.11.2-15
samba: before 4.11.2-15
python3-samba-test: before 4.11.2-15
python3-samba: before 4.11.2-15
libwbclient: before 4.11.2-15
libsmbclient: before 4.11.2-15
ctdb-tests: before 4.11.2-15
ctdb: before 4.11.2-15
CPE2.3- cpe:2.3:o:openanolis:anolis_os:8:*:*:*:*:*:*:*
- cpe:2.3:a:openanolis:samba-pidl:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:samba-common:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:samba-winbind-modules:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:samba-winbind-krb5-locator:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:samba-winbind-clients:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:samba-winbind:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:samba-test-libs:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:samba-test:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:samba-libs:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:samba-krb5-printing:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:samba-common-tools:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:samba-common-libs:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:samba-client-libs:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:samba-client:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:samba:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:python3-samba-test:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:python3-samba:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:libwbclient:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:libsmbclient:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:ctdb-tests:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:ctdb:*:*:*:*:*:anolis_os:*:*
https://anas.openanolis.cn/errata/detail/ANSA-2021:0176
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
