High severity · published Sep 12, 2018
CVE-2018-16949
An issue was discovered in OpenAFS before 1.6.23 and 1.8.x before 1.8.2
7.5
CVSS
3.1%
EPSS
No
On KEV
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
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.1% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0; 9.0 · source: NVD
OP
Openafs · Openafs
before 1.6.23; 1.8.0 before 1.8.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-16949
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-16949
Vendor Advisory
http://openafs.org/pages/security/OPENAFS-SA-2018-003.txt
Third Party Advisory
http://www.securityfocus.com/bid/106375
Mailing List
https://lists.debian.org/debian-lts-announce/2018/09/msg00024.html
Third Party Advisory
https://www.debian.org/security/2018/dsa-4302
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