Vulnerability Details : 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 simplifying off-path DNS spoofing attacks due to IP fragmentation.
Products affected by CVE-2017-12132
- cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-12132
0.26%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 46 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-12132
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST | |
|
5.9
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N |
2.2
|
3.6
|
NIST |
CWE ids for CVE-2017-12132
-
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-12132
-
https://sourceware.org/bugzilla/show_bug.cgi?id=21361
21361 – (CVE-2017-12132) resolv: Reduce advertised EDNS0 buffer size to guard against fragmentation attacks (CVE-2017-12132)Issue Tracking;Patch;Third Party Advisory
-
http://www.securityfocus.com/bid/100598
GNU glibc CVE-2017-12132 Security Bypass Vulnerability
-
https://access.redhat.com/errata/RHSA-2018:0805
-
https://arxiv.org/pdf/1205.4011.pdf
Technical Description;Third Party Advisory
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