High severity · published Jun 28, 2017
CVE-2017-9445
In systemd through 233, certain sizes passed to dns_packet_new in systemd-resolved can cause it to allocate a buffer that's too small
7.5
CVSS
54.8%
EPSS
No
On KEV
Description
In systemd through 233, certain sizes passed to dns_packet_new in systemd-resolved can cause it to allocate a buffer that's too small. A malicious DNS server can exploit this via a response with a specially crafted TCP payload to trick systemd-resolved into allocating a buffer that's too small, and subsequently write arbitrary data beyond the end of it.
CVSS vector
CVSS:3.1/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)54.8% · higher than 99% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SY
Systemd · Systemd Project
223 through 233 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-9445
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-9445
Mailing List
http://openwall.com/lists/oss-security/2017/06/27/8
Third Party Advisory
http://www.securityfocus.com/bid/99302
Third Party Advisory
http://www.securitytracker.com/id/1038806
Broken Link
https://launchpad.net/bugs/1695546
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