Oct 12, 2022•Knowledge
Summary
Memory leaks exist in EdDSA and ECDSA DNSSEC verification code.
Overview
On September 21, 2022 ISC announced two new vulnerabilities, CVE-2022-38177 and 38178.
The DNSSEC verification code for the ECDSA algorithm leaks memory when there is a signature length mismatch.
Program impacted: BIND
Severity: High
Exploitable: Remotely
CVSS Score: 7.5
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Versions
BloxOne and NIOS are vulnerable to CVE-2022-38177 and CVE-2022-38178.
Impact
By spoofing the target resolver with responses that have a malformed ECDSA or EDDSA 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.
Workaround
No workaround is available for Infoblox BloxOne and NIOS products.
Resolution
Infoblox suggests one of the following options to resolve this:
- NIOS
- Apply NIOS version-specific Hotfix (8.2.6 CC, 8.5.2, 8.5.2 CC, 8.5.3, 8.5.4, 8.5.5, 8.6.1, 8.6.2). All related files are attached to this case, however, we recommend only downloading the Hotfix Release Form, Hotfix, and Revert Hotfix specific to your NIOS version.
- These CVEs will be patched in future NIOS release 8.6.3.
- BloxOne
- Infoblox will be delivering a patch to fix this issue on September 24 2022.
- NOTE: You do have the option to defer this update to a time of your choosing to minimize any business impact this interruption may have.
Additional Notes
- The 8.5.2 CC Hotfix can be used for environments running 8.5.2 without CC mode.
- The Hotfix files in this KB resolve the CVEs in this article as well as the issue identified in CVE- 2022-2795.
NIOS Version-Specific Hotfix Files (attached to this KB)
8.2.6 CC
|
File |
File Name |
|
Hotfix Release Form |
8.2.6_CC_Hotfix_Release_Form_NIOS-87294.pdf |
|
Hotfix |
Hotfix-8-2-6-NIOS-87294-APPLY-d81d2ad229cb308e03f94ca4e370ce8e-Thu-Sep-15-02-27-21-2022.bin2 |
|
Hotfix Revert |
Hotfix-8-2-6-NIOS-87294-REVERT-3a92b7e88264e6f79dcae897c5145759-Thu-Sep-15-02-27-49-2022.bin2 |
8.5.2 CC
|
File |
File Name |
|
Hotfix Release Form |
8.5.2_Hotfix_Release_Form_NIOS-87227.pdf |
|
Hotfix |
Hotfix-NIOS-8.5.2-409296-J87227-APPLY-09c8adf65d70c79123b7d89d3139fb22-Wed-Sep-14-01-23-59-2022.bin2 |
|
Hotfix Revert |
Hotfix-NIOS-8.5.2-409296-J87227-REVERT-011ce931a2ce11878b76d95cecedcdf7-Wed-Sep-14-01-29-01-2022.bin2 |
8.5.3
|
File |
File Name |
|
Hotfix Release Form |
8.5.3_Hotfix_Release_Form_NIOS-87229.pdf |
|
Hotfix |
Hotfix-NIOS-8.5.3-417434-J87229-APPLY-c92e7430006bf2eb072feb066e34d032-Tue-Sep-13-21-31-16-2022.bin |
|
Hotfix Revert |
Hotfix-NIOS-8.5.3-417434-J87229-REVERT-56b193220a8c456f1aa7e62981fa513b-Tue-Sep-13-21-57-12-2022.bin |
8.5.4
|
File |
File Name |
|
Hotfix Release Form |
8.5.4_Hotfix_Release_Form_NIOS-87230.pdf |
|
Hotfix |
Hotfix-8-5-4-NIOS-87230-APPLY-eca36bcb9a2b63834734afd4d307187b-Tue-Sep-13-23-59-15-2022.bin |
|
Hotfix Revert |
Hotfix-8-5-4-NIOS-87230-REVERT-bcd228b43dce5f95b69804ea940ef69d-Wed-Sep-14-20-19-53-2022.bin |
8.5.5
|
File |
File Name |
|
Hotfix Release Form |
8.5.5_Hotfix_Release_Form_NIOS-87231.pdf |
|
Hotfix |
Hotfix-8-5-5-NIOS-87231-APPLY-28c27130f7e376a32e3d15d406f8bc62-Wed-Sep-14-00-07-11-2022.bin |
|
Hotfix Revert |
Hotfix-8-5-5-NIOS-87231-REVERT-8f70b7a51004d16a5676e960d94d5908-Wed-Sep-14-00-09-07-2022.bin |
8.6.1
|
The 8.6.1. Hotfix has been updated. If you have already applied the original 8.6.1 Hotfix file (i.e. Hotfix-8-6-1-NIOS-87232-APPLY-4a57333b2cbea0d4aff166aa2edb38c6-Wed-Sep-14-00-07-47-2022.bin), that is not an issue. Please install the new 8.6.1 Hotfix file below to ensure that you are running the latest Hotfix release. |
|
File |
File Name |
|
Hotfix Release Form |
8.6.1_Hotfix_Release_Form_NIOS-87709.pdf |
|
Hotfix |
Hotfix-8-6-1-NIOS-87709-APPLY-49ddec3b0d18db825767bf0611c40c11-Mon-Oct-10-20-49-25-2022.bin2 |
|
Hotfix Revert |
Hotfix-8-6-1-NIOS-87709-REVERT-2e0789123c2f35948f1ee142471ccf4f-Mon-Oct-10-20-48-42-2022.bin2 |
8.6.2
|
File |
File Name |
|
Hotfix Release Form |
8.6.2_Hotfix_Release_Form_NIOS-87233.pdf |
|
Hotfix |
Hotfix-8-6-2-NIOS-87233-APPLY-5e10eb8f97078454fc0c50c37b6f755d-Wed-Sep-14-00-14-44-2022.bin |
|
Hotfix Revert |
Hotfix-8-6-2-NIOS-87233-REVERT-ad3836d27332dc176a042d4ca26261f6-Wed-Sep-14-00-14-04-2022.bin |