Bugzilla – Bug 1191175
VUL-1: CVE-2021-3521: rpm: RPM does not require subkeys to have a valid binding signature
Last modified: 2022-09-05 13:18:21 UTC
RPM does not require subkeys to have a valid binding signature. This could potentially result in a signature being wrongly trusted in the following (rather contrived) scenario: A malicious subkey (to which an attacker has the secret key) is added to a legitimate public key, via a process that rejects main keys but not subkeys and does not itself check binding signatures. The main key is exported and then imported into RPM.
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.
The code on SLE-11 has no pgpPrtParams function.
In general the above statement is also valid for SLE-11.
Hi, any update on this?