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CVE-2018-16949

Published: 12 September 2018

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.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
openafs
Launchpad, Ubuntu, Debian
groovy Not vulnerable
(1.8.4~pre1-1ubuntu2)
xenial Needed

lunar Not vulnerable
(1.8.4~pre1-1ubuntu2)
bionic Needed

cosmic Ignored
(end of life)
disco Not vulnerable
(1.8.2-1ubuntu0.1)
eoan Not vulnerable
(1.8.4~pre1-1ubuntu2)
focal Not vulnerable
(1.8.4~pre1-1ubuntu2)
hirsute Not vulnerable
(1.8.4~pre1-1ubuntu2)
impish Not vulnerable
(1.8.4~pre1-1ubuntu2)
jammy Not vulnerable
(1.8.4~pre1-1ubuntu2)
kinetic Not vulnerable
(1.8.4~pre1-1ubuntu2)
trusty Does not exist
(trusty was needs-triage)
upstream
Released (1.8.2-1)
mantic Not vulnerable
(1.8.4~pre1-1ubuntu2)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H