Risk | Medium |
Patch available | NO |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-3521 |
CWE-ID | CWE-347 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
rpm / |
Vendor | rpm-software-management |
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU59993
Risk: Medium
CVSSv3.1: 6.8 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:U/RC:C]
CVE-ID: CVE-2021-3521
CWE-ID:
CWE-347 - Improper Verification of Cryptographic Signature
Exploit availability: No
DescriptionThe 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.
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsrpm: 4.0 - 4.17.0 rc1
http://github.com/rpm-software-management/rpm/pull/1788
http://bugzilla.redhat.com/show_bug.cgi?id=1941098
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.