Anolis OS update for rpm (Anolis OS 8.2)

Published: 2021-08-18 | Updated: 2025-03-28

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-20271 CVE-2021-3421
CWE-ID	CWE-345 CWE-347
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) Insufficient verification of data authenticity

EUVDB-ID: #VU54477

Risk: Medium

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-20271

CWE-ID: CWE-345 - Insufficient Verification of Data Authenticity

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 check functionality when reading package files. A remote attacker can create a specially crafted package with a modified signature header, trick the victim into installing and compromise the affected system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

rpm-cron: before 4.14.2-38

rpm-apidocs: before 4.14.2-38

rpm-sign: before 4.14.2-38

rpm-plugin-systemd-inhibit: before 4.14.2-38

rpm-plugin-syslog: before 4.14.2-38

rpm-plugin-selinux: before 4.14.2-38

rpm-plugin-prioreset: before 4.14.2-38

rpm-plugin-ima: before 4.14.2-38

rpm-libs: before 4.14.2-38

rpm-devel: before 4.14.2-38

rpm-build-libs: before 4.14.2-38

rpm-build: before 4.14.2-38

rpm: before 4.14.2-38

python3-rpm: before 4.14.2-38

CPE2.3

External links

https://anas.openanolis.cn/errata/detail/ANSA-2021:0140

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) Improper Verification of Cryptographic Signature

EUVDB-ID: #VU54479