Home/CVE/The DNS stub resolver in the GNU C Library (aka glibc or libc6) before version 2.26, when EDNS support is enabled, will
CVE

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

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.

MEDIUM · CVSS 5.9 EPSS 0.00602
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-770Allocation of Resources Without Limits or Throttling
▤

Affected Products & Versions

1
gnu glibc<= 2.25
▣

Scoring & Timeline

5.9
MEDIUM · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD01 Aug 2017 · 04:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
⚑

Vendor Advisories

7
suse-csafopenSUSE-SU-2024:10792-1
usnUSN-5768-1
suse-csafSUSE-SU-2018:2185-1
suse-csafSUSE-SU-2018:2187-1
suse-csafSUSE-SU-2018:0565-1
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securityfocus.com/bid/100598
https://arxiv.org/pdf/1205.4011.pdfTechnical DescriptionThird Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=21361Issue TrackingPatchThird Party Advisory
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