Bug 2264285 (CVE-2023-5680) - CVE-2023-5680 bind9: Cleaning an ECS-enabled cache may cause excessive CPU load
Summary: CVE-2023-5680 bind9: Cleaning an ECS-enabled cache may cause excessive CPU load
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2023-5680
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2264286 2264287 2264288 2264289
Blocks: 2263895
TreeView+ depends on / blocked
 
Reported: 2024-02-14 22:12 UTC by Marco Benatto
Modified: 2024-03-29 01:11 UTC (History)
0 users

Fixed In Version: bind 9.16.48-S1, bind 9.18.24-S1
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the bind9 package. This issue may allow an attacker to substantially decrease `named` performance by sending a specific set of queries, forcing the same name to have a large number of ECS records stored. In the worst case scenario, `named` can become unresponsive, leading to a Denial of Service.
Clone Of:
Environment:
Last Closed: 2024-02-15 17:45:32 UTC
Embargoed:

Attachments (Terms of Use)

Description Marco Benatto 2024-02-14 22:12:40 UTC 
If a resolver cache has a very large number of ECS records stored for the same name, the process of cleaning the cache database node for this name can significantly impair query performance.
Comment 1 Marco Benatto 2024-02-14 22:13:13 UTC 
Created bind tracking bugs for this issue:

Affects: fedora-all [bug 2264286]


Created dhcp tracking bugs for this issue:

Affects: fedora-all [bug 2264289]


Created dnsmasq tracking bugs for this issue:

Affects: fedora-all [bug 2264288]


Created unbound tracking bugs for this issue:

Affects: fedora-all [bug 2264287]
Note You need to log in before you can comment on or make changes to this bug.