Red Hat Enterprise Linux 7.7 update for rpm



Published: 2021-12-08
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 for x86_64 - Update Services for SAP Solutions
Operating systems & Components / Operating system package or component

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Operating systems & Components / Operating system package or component

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

Red Hat Enterprise Linux Server - TUS
Operating systems & Components / Operating system

Red Hat Enterprise Linux Server - AUS
Operating systems & Components / Operating system

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Insufficient verification of data authenticity

EUVDB-ID: #VU54477

Risk: Medium

CVSSv3.1:

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 for x86_64 - Update Services for SAP Solutions: 7.7

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 7.7

Red Hat Enterprise Linux Server - TUS: 7.7

Red Hat Enterprise Linux Server - AUS: 7.7

rpm (Red Hat package): before 4.11.3-40.el7_7.1


CPE2.3 External links

http://access.redhat.com/errata/RHSA-2021:4975

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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