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CVE-2022-38177

Memory leak in ECDSA DNSSEC verification code

Published: Sep 21, 2022Updated: May 28, 2025 Sources: CVE List NVD BDU csafCWE-401
NVD MITRE
7.5CVSSHIGH
EPSS Score
2.2%
Top 19.8%
CISA KEV
Not in KEV
Exploits
0 Known
Remediation
Patch Available

Description

By spoofing the target resolver with responses that have a malformed ECDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-401

Affected Products

BIND9ISCNetworking Infrastructure
bindiscNetworking Infrastructure
debian linuxdebian
On-premOS
Operating Systems / linux-distro
fedorafedoraproject
On-premOS
Operating Systems / linux-distro
active iq unified managernetappHardware Firmware
isccommercialUSNetworking Infrastructureaka internet systems consortium
debianoss-projectGBOperating Systemsaka debian gnu/linux
fedoraprojectoss-projectUSOperating Systemsaka fedora project
netappcommercialUSHardware Firmware
and 12 more affected products View all →

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

References

https://kb.isc.org/docs/cve-2022-38177
kb.isc.org
http://www.openwall.com/lists/oss-security/2022/09/21/3
openwall.com
https://www.debian.org/security/2022/dsa-5235
debian.org
and 76 more references View all →

Timeline

Published
Sep 21, 2022
Last Updated
May 28, 2025

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