CVE-2023-2828
named's configured cache size limit can be significantly exceeded
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
Every `named` instance configured to run as a recursive resolver maintains a cache database holding the responses to the queries it has recently sent to authoritative servers. The size limit for that cache database can be configured using the `max-cache-size` statement in the configuration file; it defaults to 90% of the total amount of memory available on the host. When the size of the cache reaches 7/8 of the configured limit, a cache-cleaning algorithm starts to remove expired and/or least-recently used RRsets from the cache, to keep memory use below the configured limit.
It has been discovered that the effectiveness of the cache-cleaning algorithm used in `named` can be severely diminished by querying the resolver for specific RRsets in a certain order, effectively allowing the configured `max-cache-size` limit to be significantly exceeded.
This issue affects BIND 9 versions 9.11.0 through 9.16.41, 9.18.0 through 9.18.15, 9.19.0 through 9.19.13, 9.11.3-S1 through 9.16.41-S1, and 9.18.11-S1 through 9.18.15-S1.
A vulnerability was found in BIND. The effectiveness of the cache-cleaning algorithm used in named can be severely diminished by querying the resolver for specific RRsets in a certain order, effectively allowing the configured max-cache-size limit to exceed significantly.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2023-05-22 CVE Reserved
- 2023-06-21 CVE Published
- 2024-08-02 CVE Updated
- 2024-09-25 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-770: Allocation of Resources Without Limits or Throttling
CAPEC
References (9)
URL | Date | SRC |
---|
URL | Date | SRC |
---|---|---|
http://www.openwall.com/lists/oss-security/2023/06/21/6 | 2023-07-21 |
URL | Date | SRC |
---|---|---|
https://kb.isc.org/docs/cve-2023-2828 | 2023-07-21 | |
https://access.redhat.com/security/cve/CVE-2023-2828 | 2023-07-31 | |
https://bugzilla.redhat.com/show_bug.cgi?id=2216227 | 2023-07-31 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Netapp Search vendor "Netapp" | H500s Firmware Search vendor "Netapp" for product "H500s Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | H500s Search vendor "Netapp" for product "H500s" | - | - |
Safe
|
Netapp Search vendor "Netapp" | H700s Firmware Search vendor "Netapp" for product "H700s Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | H700s Search vendor "Netapp" for product "H700s" | - | - |
Safe
|
Netapp Search vendor "Netapp" | H410s Firmware Search vendor "Netapp" for product "H410s Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | H410s Search vendor "Netapp" for product "H410s" | - | - |
Safe
|
Netapp Search vendor "Netapp" | H410c Firmware Search vendor "Netapp" for product "H410c Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | H410c Search vendor "Netapp" for product "H410c" | - | - |
Safe
|
Netapp Search vendor "Netapp" | H300s Firmware Search vendor "Netapp" for product "H300s Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | H300s Search vendor "Netapp" for product "H300s" | - | - |
Safe
|
Isc Search vendor "Isc" | Bind Search vendor "Isc" for product "Bind" | >= 9.11.0 <= 9.16.41 Search vendor "Isc" for product "Bind" and version " >= 9.11.0 <= 9.16.41" | - |
Affected
| ||||||
Isc Search vendor "Isc" | Bind Search vendor "Isc" for product "Bind" | >= 9.11.3 <= 9.16.41 Search vendor "Isc" for product "Bind" and version " >= 9.11.3 <= 9.16.41" | supported_preview |
Affected
| ||||||
Isc Search vendor "Isc" | Bind Search vendor "Isc" for product "Bind" | >= 9.18.0 <= 9.18.15 Search vendor "Isc" for product "Bind" and version " >= 9.18.0 <= 9.18.15" | - |
Affected
| ||||||
Isc Search vendor "Isc" | Bind Search vendor "Isc" for product "Bind" | >= 9.18.11 <= 9.18.15 Search vendor "Isc" for product "Bind" and version " >= 9.18.11 <= 9.18.15" | supported_preview |
Affected
| ||||||
Isc Search vendor "Isc" | Bind Search vendor "Isc" for product "Bind" | >= 9.19.0 <= 9.19.13 Search vendor "Isc" for product "Bind" and version " >= 9.19.0 <= 9.19.13" | - |
Affected
| ||||||
Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0" | - |
Affected
| ||||||
Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0" | - |
Affected
| ||||||
Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 12.0 Search vendor "Debian" for product "Debian Linux" and version "12.0" | - |
Affected
| ||||||
Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 37 Search vendor "Fedoraproject" for product "Fedora" and version "37" | - |
Affected
| ||||||
Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 38 Search vendor "Fedoraproject" for product "Fedora" and version "38" | - |
Affected
| ||||||
Netapp Search vendor "Netapp" | Active Iq Unified Manager Search vendor "Netapp" for product "Active Iq Unified Manager" | - | vmware_vsphere |
Affected
|