{"id":"UBUNTU-CVE-2018-16949","details":"An issue was discovered in OpenAFS before 1.6.23 and 1.8.x before 1.8.2. Several data types used as RPC input variables were implemented as unbounded array types, limited only by the inherent 32-bit length field to 4 GB. An unauthenticated attacker could send, or claim to send, large input values and consume server resources waiting for those inputs, denying service to other valid connections.","modified":"2026-04-22T11:48:14.713873Z","published":"2018-09-12T01:29:00Z","upstream":["CVE-2018-16949"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-16949"},{"type":"REPORT","url":"http://openafs.org/pages/security/OPENAFS-SA-2018-003.txt"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-16949"}],"affected":[{"package":{"name":"openafs","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/openafs@1.6.15-1ubuntu1.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.14-1","1.6.15-1","1.6.15-1ubuntu1","1.6.15-1ubuntu1.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.6.15-1ubuntu1.1","binary_name":"libafsauthent1"},{"binary_version":"1.6.15-1ubuntu1.1","binary_name":"libafsrpc1"},{"binary_version":"1.6.15-1ubuntu1.1","binary_name":"libkopenafs1"},{"binary_version":"1.6.15-1ubuntu1.1","binary_name":"libpam-openafs-kaserver"},{"binary_version":"1.6.15-1ubuntu1.1","binary_name":"openafs-client"},{"binary_version":"1.6.15-1ubuntu1.1","binary_name":"openafs-dbserver"},{"binary_version":"1.6.15-1ubuntu1.1","binary_name":"openafs-fileserver"},{"binary_version":"1.6.15-1ubuntu1.1","binary_name":"openafs-fuse"},{"binary_version":"1.6.15-1ubuntu1.1","binary_name":"openafs-kpasswd"},{"binary_version":"1.6.15-1ubuntu1.1","binary_name":"openafs-krb5"},{"binary_version":"1.6.15-1ubuntu1.1","binary_name":"openafs-modules-dkms"},{"binary_version":"1.6.15-1ubuntu1.1","binary_name":"openafs-modules-source"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-16949.json"}},{"package":{"name":"openafs","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/openafs@1.8.0~pre5-1ubuntu1.2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.21-3","1.6.21-3ubuntu1","1.6.22-3","1.8.0~pre4-1","1.8.0~pre5-1","1.8.0~pre5-1ubuntu1","1.8.0~pre5-1ubuntu1.1","1.8.0~pre5-1ubuntu1.2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.8.0~pre5-1ubuntu1.2","binary_name":"libafsauthent2"},{"binary_version":"1.8.0~pre5-1ubuntu1.2","binary_name":"libafsrpc2"},{"binary_version":"1.8.0~pre5-1ubuntu1.2","binary_name":"libkopenafs2"},{"binary_version":"1.8.0~pre5-1ubuntu1.2","binary_name":"openafs-client"},{"binary_version":"1.8.0~pre5-1ubuntu1.2","binary_name":"openafs-dbserver"},{"binary_version":"1.8.0~pre5-1ubuntu1.2","binary_name":"openafs-fileserver"},{"binary_version":"1.8.0~pre5-1ubuntu1.2","binary_name":"openafs-fuse"},{"binary_version":"1.8.0~pre5-1ubuntu1.2","binary_name":"openafs-krb5"},{"binary_version":"1.8.0~pre5-1ubuntu1.2","binary_name":"openafs-modules-dkms"},{"binary_version":"1.8.0~pre5-1ubuntu1.2","binary_name":"openafs-modules-source"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-16949.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}