CVE-2018-16949
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.08%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 3.08% probability · 88th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- openafs/openafs · debian/debian linux
- Source
- cve@mitre.org
EPSS 3.1% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://openafs.org/pages/security/OPENAFS-SA-2018-003.txtVendor Advisory
- http://www.securityfocus.com/bid/106375Third Party Advisory, VDB Entry
- https://lists.debian.org/debian-lts-announce/2018/09/msg00024.htmlMailing List, Third Party Advisory
- https://www.debian.org/security/2018/dsa-4302Third Party Advisory
- http://openafs.org/pages/security/OPENAFS-SA-2018-003.txtVendor Advisory
- http://www.securityfocus.com/bid/106375Third Party Advisory, VDB Entry
- https://lists.debian.org/debian-lts-announce/2018/09/msg00024.htmlMailing List, Third Party Advisory
- https://www.debian.org/security/2018/dsa-4302Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.