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CVE-2021-25214

A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly

Published: Apr 29, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-617
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
5.9%
Top 7.7%
CISA KEV
Not in KEV
Exploits
0 Known
Remediation
Patch Available

Description

In BIND 9.8.5 -> 9.8.8, 9.9.3 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-617

Affected Products

bindiscNetworking Infrastructure
debian linuxdebian
On-premOS
Operating Systems / linux-distro
fedorafedoraproject
On-premOS
Operating Systems / linux-distro
sinec infrastructure network servicessiemensICS / OT / IoT
active iq unified managernetappHardware Firmware
isccommercialUSNetworking Infrastructureaka internet systems consortium
debianoss-projectGBOperating Systemsaka debian gnu/linux
fedoraprojectoss-projectUSOperating Systemsaka fedora project
siemenscommercialDEEnterprise Softwareaka siemens ag
netappcommercialUSHardware Firmware
and 23 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

0 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
Workaround Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

http://www.openwall.com/lists/oss-security/2021/04/29/1
openwall.com
http://www.openwall.com/lists/oss-security/2021/04/29/2
openwall.com
http://www.openwall.com/lists/oss-security/2021/04/29/3
openwall.com
and 109 more references View all →

Timeline

Published
Apr 29, 2021
Last Updated
Nov 21, 2024

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