Anolis OS update for rpm

Published: 2022-02-10 | Updated: 2025-03-29

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-3521 CVE-2021-20266
CWE-ID	CWE-347 CWE-125
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Anolis OS Operating systems & Components / Operating system rpm-cron Operating systems & Components / Operating system package or component rpm-apidocs Operating systems & Components / Operating system package or component rpm-sign Operating systems & Components / Operating system package or component rpm-plugin-systemd-inhibit Operating systems & Components / Operating system package or component rpm-plugin-syslog Operating systems & Components / Operating system package or component rpm-plugin-selinux Operating systems & Components / Operating system package or component rpm-plugin-prioreset Operating systems & Components / Operating system package or component rpm-plugin-ima Operating systems & Components / Operating system package or component rpm-libs Operating systems & Components / Operating system package or component rpm-devel Operating systems & Components / Operating system package or component rpm-build-libs Operating systems & Components / Operating system package or component rpm-build Operating systems & Components / Operating system package or component rpm Operating systems & Components / Operating system package or component python3-rpm Operating systems & Components / Operating system package or component
Vendor	OpenAnolis

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper Verification of Cryptographic Signature

EUVDB-ID: #VU59993

Risk: Medium

CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-3521

CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to an error in RPM's signature functionality, as RPM does not check the binding signature of subkeys before importing them. A remote attacker with ability to add malicious subkey to a legitimate public key can run malicious code on the system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

rpm-cron: before 4.14.3-19.0.2

rpm-apidocs: before 4.14.3-19.0.2

rpm-sign: before 4.14.3-19.0.2

rpm-plugin-systemd-inhibit: before 4.14.3-19.0.2

rpm-plugin-syslog: before 4.14.3-19.0.2

rpm-plugin-selinux: before 4.14.3-19.0.2

rpm-plugin-prioreset: before 4.14.3-19.0.2

rpm-plugin-ima: before 4.14.3-19.0.2

rpm-libs: before 4.14.3-19.0.2

rpm-devel: before 4.14.3-19.0.2

rpm-build-libs: before 4.14.3-19.0.2

rpm-build: before 4.14.3-19.0.2

rpm: before 4.14.3-19.0.2

python3-rpm: before 4.14.3-19.0.2

CPE2.3

External links

https://anas.openanolis.cn/errata/detail/ANSA-2022:0009

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.

2) Out-of-bounds read

EUVDB-ID: #VU54478

Risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-20266

CWE-ID: CWE-125 - Out-of-bounds read