National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-12132 Detail

Current 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.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.9 MEDIUM
Vector: AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N (V3 legend)
Impact Score: 3.6
Exploitability Score: 2.2


Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): High
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): None
Integrity (I): Partial
Availability (A): None
Additional Information:
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/100598
https://access.redhat.com/errata/RHSA-2018:0805
https://arxiv.org/pdf/1205.4011.pdf Technical Description Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=21361 Issue Tracking Patch Third Party Advisory

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
2.25


Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-12132
NVD Published Date:
08/01/2017
NVD Last Modified:
05/03/2018