title: lack of keypinning in libzypp could lead to repository switching
description: In libzypp before August 2018 GPG keys attached to YUM repositories were not correctly pinned, allowing malicious repository mirrors to silently downgrade to unsigned repositories with potential malicious content.
problem types: Malicious mirrors could downgrade repositories from trusted signed repositories to unsigned malicious repositories.
affected:
{
product: libzypp
vendor: SUSE
versions:
lessThan: 201808, status: affected, version: unspecified, versionType: custom
}
metrics:
cvssV3_0: [
attackComplexity: HIGH
attackVector: NETWORK
availabilityImpact: LOW
baseScore: 7.7
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
version: 3.0
]