CVE-2018-16949 Information

Description

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://openafs.org/pages/security/OPENAFS-SA-2018-003.txt http://www.securityfocus.com/bid/106375 https://lists.debian.org/debian-lts-announce/2018/09/msg00024.html https://www.debian.org/security/2018/dsa-4302

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5