Medium severity · published Jun 6, 2017
CVE-2017-9461
smbd in Samba before 4.4.10 and 4.5.x before 4.5.6 has a denial of service vulnerability (fd_open_atomic infinite loop with high CPU usage and memory consumption) due to wrongly…
6.5
CVSS
4.2%
EPSS
No
On KEV
Description
smbd in Samba before 4.4.10 and 4.5.x before 4.5.6 has a denial of service vulnerability (fd_open_atomic infinite loop with high CPU usage and memory consumption) due to wrongly handling dangling symlinks.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.2% · higher than 91% 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 · source: NVD
EL
Enterprise Linux Desktop · Redhat
7.0 · source: NVD
EL
Enterprise Linux Server · Redhat
7.0 · source: NVD
EL
Enterprise Linux Server Aus · Redhat
7.4; 7.6 · source: NVD
EL
Enterprise Linux Server Eus · Redhat
7.4; 7.5; 7.6 · source: NVD
EL
Enterprise Linux Server Tus · Redhat
7.6 · source: NVD
EL
Enterprise Linux Workstation · Redhat
7.0 · source: NVD
SA
Samba · Samba
through 4.4.9; 4.5.0; 4.5.1; 4.5.2; 4.5.3; 4.5.4; +1 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-9461
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-9461
Third Party Advisory
http://www.securityfocus.com/bid/99455
Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1950
Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2338
Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2778
Exploit
https://bugs.debian.org/864291
Exploit
https://bugzilla.samba.org/show_bug.cgi?id=12572
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