Medium severity · published Aug 1, 2017
CVE-2017-12132
The DNS stub resolver in the GNU C Library (aka glibc or libc6) before version 2.26, when EDNS support is enabled, will solicit large UDP responses from name servers, potentially…
5.9
CVSS
2%
EPSS
No
On KEV
Description
The DNS stub resolver in the GNU C Library (aka glibc or libc6) before version 2.26, when EDNS support is enabled, will solicit large UDP responses from name servers, potentially simplifying off-path DNS spoofing attacks due to IP fragmentation.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.0% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GL
Glibc · Gnu
through 2.25 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-12132
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-12132
www.securityfocus.com
http://www.securityfocus.com/bid/100598
access.redhat.com
https://access.redhat.com/errata/RHSA-2018:0805
Technical Description
https://arxiv.org/pdf/1205.4011.pdf
Issue Tracking
https://sourceware.org/bugzilla/show_bug.cgi?id=21361
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