SB2021041240 - Fedora 33 update for rpm-ostree
Published: April 12, 2021
Security Bulletin ID
SB2021041240
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Verification of Cryptographic Signature (CVE-ID: CVE-2021-3445)
CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature
CVSSv4: 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
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient verification of cryptographic signature in libdnf. A remote attacker can create a specially crafted RPM package with altered header information, trick the victim into installing it and compromise the affected system.
Remediation
Install update from vendor's website.