CVE-2021-3521
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-3521
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3521.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-3521
- Related
- Published
- 2022-08-22T15:15:13Z
- Modified
- 2024-09-18T03:15:15.471741Z
- Severity
-
- 4.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
There is a flaw in RPM's signature functionality. OpenPGP subkeys are associated with a primary key via a "binding signature." RPM does not check the binding signature of subkeys prior to importing them. If an attacker is able to add or socially engineer another party to add a malicious subkey to a legitimate public key, RPM could wrongly trust a malicious signature. The greatest impact of this flaw is to data integrity. To exploit this flaw, an attacker must either compromise an RPM repository or convince an administrator to install an untrusted RPM or public key. It is strongly recommended to only use RPMs and public keys from trusted sources.
- References
-
- https://security.gentoo.org/glsa/202210-22
- https://bugzilla.redhat.com/show_bug.cgi?id=1941098
- https://github.com/rpm-software-management/rpm/commit/bd36c5dc9fb6d90c46fbfed8c2d67516fc571ec8
- https://github.com/rpm-software-management/rpm/pull/1795/
- https://access.redhat.com/security/cve/CVE-2021-3521
- https://security-tracker.debian.org/tracker/CVE-2021-3521
Affected packages
Debian:11 / rpm
Package
- Name
- rpm
- Purl
- pkg:deb/debian/rpm?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affected
Debian:12 / rpm
Package
- Name
- rpm
- Purl
- pkg:deb/debian/rpm?arch=source
Debian:13 / rpm
Package
- Name
- rpm
- Purl
- pkg:deb/debian/rpm?arch=source