Resource exhaustion in Openafs
CVE-2018-16949
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.031 (87.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.031 · newest: 0.031 · change: 0.000
Affected products
- Openafs
- Debian Linux — versions 8.0, 9.0
Weakness classification (CWE)
References
- www.securityfocus.com/bid/106375 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.debian.org/debian-lts-announce/2018/09/msg00024.html (mailing-list, Mailing List, Third Party Advisory)
- openafs.org/pages/security/OPENAFS-SA-2018-003.txt (Vendor Advisory)
- www.debian.org/security/2018/dsa-4302 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-16949?
- CVE-2018-16949 is a high-severity vulnerability in Openafs, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2018-09-12.
- How severe is CVE-2018-16949?
- High severity. CVSS v3 base score is 7.5 out of 10.