CVE-2024-1975

HIGH7.5

SIG(0) can be used to exhaust CPU resources

Published Jul 23, 2024

Modified 11 months ago

No fix available

Details

If a server hosts a zone containing a "KEY" Resource Record, or a resolver DNSSEC-validates a "KEY" Resource Record from a DNSSEC-signed domain in cache, a client can exhaust resolver CPU resources by sending a stream of SIG(0) signed requests. This issue affects BIND 9 versions 9.0.0 through 9.11.37, 9.16.0 through 9.16.50, 9.18.0 through 9.18.27, 9.19.0 through 9.19.24, 9.9.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.49-S1, and 9.18.11-S1 through 9.18.27-S1.

References

WEBhttp://www.openwall.com/lists/oss-security/2024/07/23/1 WEBhttp://www.openwall.com/lists/oss-security/2024/07/31/2 ADVISORYhttps://kb.isc.org/docs/cve-2024-1975 WEBhttps://security.netapp.com/advisory/ntap-20240731-0002/ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2024-1975

CVSS Analysis

CVSS v3.1

7.5

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

NoneC:N

Integrity

NoneI:N

Availability

HighA:H

7.5/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Ecosystems

Timeline

PublishedJul 23, 2024

ModifiedFeb 13, 2025