CVE-2023-3341 A stack exhaustion flaw in control channel code may cause named to terminate unexpectedly

2023-09-2012:32:03

isc

www.cve.org

cve-2023-3341

stack exhaustion

named

control channel

code

termination

bind 9

recursion depth

packet parsing

memory

exploitation

network access

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

7.9 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

51.9%

JSON

The code that processes control channel messages sent to named calls certain functions recursively during packet parsing. Recursion depth is only limited by the maximum accepted packet size; depending on the environment, this may cause the packet-parsing code to run out of available stack memory, causing named to terminate unexpectedly. Since each incoming control channel message is fully parsed before its contents are authenticated, exploiting this flaw does not require the attacker to hold a valid RNDC key; only network access to the control channel’s configured TCP port is necessary.
This issue affects BIND 9 versions 9.2.0 through 9.16.43, 9.18.0 through 9.18.18, 9.19.0 through 9.19.16, 9.9.3-S1 through 9.16.43-S1, and 9.18.0-S1 through 9.18.18-S1.

CNA Affected

[
  {
    "vendor": "ISC",
    "product": "BIND 9",
    "versions": [
      {
        "version": "9.2.0",
        "lessThanOrEqual": "9.16.43",
        "status": "affected",
        "versionType": "custom"
      },
      {
        "version": "9.18.0",
        "lessThanOrEqual": "9.18.18",
        "status": "affected",
        "versionType": "custom"
      },
      {
        "version": "9.19.0",
        "lessThanOrEqual": "9.19.16",
        "status": "affected",
        "versionType": "custom"
      },
      {
        "version": "9.9.3-S1",
        "lessThanOrEqual": "9.16.43-S1",
        "status": "affected",
        "versionType": "custom"
      },
      {
        "version": "9.18.0-S1",
        "lessThanOrEqual": "9.18.18-S1",
        "status": "affected",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unaffected"
  }
]