Red Hat Enterprise Linux 8.2 update for rpm



Published: 2021-07-22
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2021-20271
CWE ID CWE-345
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Red Hat Enterprise Linux Server - TUS
Operating systems & Components / Operating system

rpm (Red Hat package)
Operating systems & Components / Operating system package or component

Vendor Red Hat Inc.

Security Advisory

This security advisory describes one medium risk vulnerability.

1) Insufficient verification of data authenticity

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

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 website.

Vulnerable software versions

Red Hat Enterprise Linux Server - TUS: 8.2

rpm (Red Hat package): before 4.14.2-38.el8_2

CPE External links

https://access.redhat.com/errata/RHSA-2021:2791

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.



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