CVE-2017-12132
glibc: Fragmentation attacks possible when EDNS0 is enabled
Severity Score
5.9
*CVSS v3
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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.
La herramienta de resolución de zonas stub de DNS en la librería GNU C, también conocida como glibc o libc6, en sus versiones anteriores a la 2.26 cuando el soporte EDNS está activado, solicitará respuestas UDP de gran tamaño de servidores de nombres, pudiendo simplificar los ataques de suplantación de DNS debido a una fragmentación de IP.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2017-08-01 CVE Reserved
- 2017-08-01 CVE Published
- 2023-05-08 EPSS Updated
- 2024-08-05 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-770: Allocation of Resources Without Limits or Throttling
CAPEC
References (6)
URL | Tag | Source |
---|---|---|
http://www.securityfocus.com/bid/100598 | Vdb Entry | |
https://arxiv.org/pdf/1205.4011.pdf | Technical Description |
URL | Date | SRC |
---|
URL | Date | SRC |
---|---|---|
https://sourceware.org/bugzilla/show_bug.cgi?id=21361 | 2019-10-03 |
URL | Date | SRC |
---|---|---|
https://access.redhat.com/errata/RHSA-2018:0805 | 2019-10-03 | |
https://access.redhat.com/security/cve/CVE-2017-12132 | 2018-04-10 | |
https://bugzilla.redhat.com/show_bug.cgi?id=1477529 | 2018-04-10 |