Anolis OS update for systemd
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2022-2526 |
| CWE-ID | CWE-416 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Anolis OS Operating systems & Components / Operating system systemd-sysv Operating systems & Components / Operating system package or component systemd-resolved Operating systems & Components / Operating system package or component systemd-python Operating systems & Components / Operating system package or component systemd-networkd Operating systems & Components / Operating system package or component systemd-libs Operating systems & Components / Operating system package or component systemd-journal-gateway Operating systems & Components / Operating system package or component systemd-devel Operating systems & Components / Operating system package or component systemd Operating systems & Components / Operating system package or component libgudev1-devel Operating systems & Components / Operating system package or component libgudev1 Operating systems & Components / Operating system package or component |
| Vendor | OpenAnolis |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Use-after-free
EUVDB-ID: #VU66757
Risk: Medium
CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2022-2526
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error within the on_stream_io() and dns_stream_complete() functions in resolved-dns-stream.c, which do not increment the reference counting for the DnsStream object. A remote attacker can send to the system specially crafted DNS responses, trigger a use-after-free error and perform a denial of service (DoS) attack.
Install updates from vendor's repository.
Vulnerable software versionsAnolis OS: 7
systemd-sysv: before 219-78
systemd-resolved: before 219-78
systemd-python: before 219-78
systemd-networkd: before 219-78
systemd-libs: before 219-78
systemd-journal-gateway: before 219-78
systemd-devel: before 219-78
systemd: before 219-78
libgudev1-devel: before 219-78
libgudev1: before 219-78
CPE2.3- cpe:2.3:o:openanolis:anolis_os:7:*:*:*:*:*:*:*
- cpe:2.3:a:openanolis:systemd-sysv:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:systemd-resolved:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:systemd-python:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:systemd-networkd:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:systemd-libs:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:systemd-journal-gateway:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:systemd-devel:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:systemd:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:libgudev1-devel:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:libgudev1:*:*:*:*:*:anolis_os:*:*
https://anas.openanolis.cn/errata/detail/ANSA-2022:0659
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
