Memory leak in ECDSA DNSSEC verification code
Published Sep 21, 2022
7.5
HIGHCVSS 3.1
EPSS 3.15%
Description
By spoofing the target resolver with responses that have a malformed ECDSA 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.
Affected products
-
- Version Open Source Branches 9.8 through 9.16 9.8.4 through versions before 9.16.33StatusaffectedConstraints-
- Version Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.33-S1StatusaffectedConstraints-
- Version Supported Preview Branches 9.9-S through 9.11-S 9.9.4-S1 through versions up to and including 9.11.37-S1StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ISC | BIND9 | n/a |
|
Configuration 1
- ≥ 9.8.4 · ≤ 9.16.32
- 9.9.3
- 9.9.3
- 9.9.12
- 9.9.13
- 9.10.5
- 9.10.7
- 9.11.3
- 9.11.5
- 9.11.5
- 9.11.5
- 9.11.5
- 9.11.6
- 9.11.7
- 9.11.8
- 9.11.12
- 9.11.14-s1
- 9.11.19-s1
- 9.11.21
- 9.11.27
- 9.11.29
- 9.11.35
- 9.11.37
- 9.16.8
- 9.16.11
- 9.16.13
- 9.16.21
- 9.16.32
Configuration 2
- 10.0
- 11.0
Configuration 3
- 35
- 36
- 37
Configuration 4
- n/a
No data.
Red Hat Enterprise Linux 7
bind-32:9.11.4-26.P2.el7_9.10
Fixed · RHSA-2022:6765
Red Hat Enterprise Linux 8
bind-32:9.11.36-3.el8_6.1
Fixed · RHSA-2022:6778
Red Hat Enterprise Linux 8
bind-32:9.11.36-3.el8_6.1
Fixed · RHSA-2022:6778
Red Hat Enterprise Linux 8
bind9.16-32:9.16.23-0.7.el8_6.1
Fixed · RHSA-2022:6781
Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions
bind-32:9.11.4-26.P2.el8_1.6
Fixed · RHSA-2022:6764
Red Hat Enterprise Linux 8.2 Extended Update Support
bind-32:9.11.13-6.el8_2.4
Fixed · RHSA-2022:6780
Red Hat Enterprise Linux 8.4 Extended Update Support
bind-32:9.11.26-4.el8_4.1
Fixed · RHSA-2022:6779
Red Hat Enterprise Linux 9
bind-32:9.16.23-1.el9_0.1
Fixed · RHSA-2022:6763
Red Hat Virtualization 4 for Red Hat Enterprise Linux 8
redhat-virtualization-host-0:4.5.3-202211170828_8.6
Fixed · RHSA-2022:8598
Red Hat Enterprise Linux 6
bind
Not affected
Red Hat Enterprise Linux 9
dhcp
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | bind-32:9.11.4-26.P2.el7_9.10 | Fixed | RHSA-2022:6765 |
| Red Hat Enterprise Linux 8 | bind-32:9.11.36-3.el8_6.1 | Fixed | RHSA-2022:6778 |
| Red Hat Enterprise Linux 8 | bind-32:9.11.36-3.el8_6.1 | Fixed | RHSA-2022:6778 |
| Red Hat Enterprise Linux 8 | bind9.16-32:9.16.23-0.7.el8_6.1 | Fixed | RHSA-2022:6781 |
| Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions | bind-32:9.11.4-26.P2.el8_1.6 | Fixed | RHSA-2022:6764 |
| Red Hat Enterprise Linux 8.2 Extended Update Support | bind-32:9.11.13-6.el8_2.4 | Fixed | RHSA-2022:6780 |
| Red Hat Enterprise Linux 8.4 Extended Update Support | bind-32:9.11.26-4.el8_4.1 | Fixed | RHSA-2022:6779 |
| Red Hat Enterprise Linux 9 | bind-32:9.16.23-1.el9_0.1 | Fixed | RHSA-2022:6763 |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 | redhat-virtualization-host-0:4.5.3-202211170828_8.6 | Fixed | RHSA-2022:8598 |
| Red Hat Enterprise Linux 6 | bind | Not affected | n/a |
| Red Hat Enterprise Linux 9 | dhcp | Not affected | n/a |
No package ranges for this CVE.
Remediation
Vendor solution
Upgrade to the patched release most closely related to your current version of BIND: BIND 9.16.33, or for BIND Supported Preview Edition (a special feature preview branch of BIND provided to eligible ISC support customers): BIND 9.16.33-S1.
Red Hat statement
This flaw affects versions 9.8.4 -> 9.16.32 of the Bind package, therefore Red Hat Enterprise Linux 6 is not affected.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed May 28, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (27 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.15% (0.03151) | 87.49th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.20% (0.02198) | 80.11th | v5 (v2026.06.15) |
| Nov 21, 2025 | 1.53% (0.01533) | 80.75th | v4 (v2025.03.14) |
| Nov 18, 2025 | 3.96% (0.03964) | 87.24th | v4 (v2025.03.14) |
| Mar 30, 2025 | 0.67% (0.00666) | 68.88th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.98% (0.01982) | 72.72th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.67% (0.00666) | 69.54th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.26% (0.00264) | 66.53th | v3 (v2023.03.01) |
| May 12, 2024 | 0.26% (0.00264) | 65.88th | v3 (v2023.03.01) |
| Apr 28, 2024 | 0.25% (0.00250) | 64.56th | v3 (v2023.03.01) |
| Apr 13, 2024 | 0.21% (0.00215) | 59.16th | v3 (v2023.03.01) |
| Mar 3, 2024 | 0.22% (0.00221) | 59.46th | v3 (v2023.03.01) |
| Dec 27, 2023 | 0.19% (0.00186) | 55.96th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.17% (0.00167) | 53.38th | v3 (v2023.03.01) |
| Oct 24, 2023 | 0.87% (0.00867) | 80.47th | v3 (v2023.03.01) |
| Sep 28, 2023 | 0.73% (0.00730) | 78.50th | v3 (v2023.03.01) |
| Aug 22, 2023 | 0.29% (0.00295) | 65.31th | v3 (v2023.03.01) |
| Jul 18, 2023 | 0.23% (0.00231) | 60.28th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.11% (0.00114) | 43.38th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.36% (0.03358) | 84.40th | v2 (v2022.01.01) |
| Dec 29, 2022 | 3.36% (0.03358) | 83.90th | v2 (v2022.01.01) |
| Oct 31, 2022 | 2.60% (0.02596) | 81.53th | v2 (v2022.01.01) |
| Oct 1, 2022 | 1.77% (0.01769) | 75.79th | v2 (v2022.01.01) |
| Sep 25, 2022 | 1.63% (0.01626) | 75.06th | v2 (v2022.01.01) |
| Sep 24, 2022 | 0.95% (0.00954) | 34.81th | v2 (v2022.01.01) |
| Sep 23, 2022 | 0.89% (0.00890) | 28.79th | v2 (v2022.01.01) |
| Sep 22, 2022 | 0.89% (0.00885) | 26.37th | v2 (v2022.01.01) |
References (13)
- http://www.openwall.com/lists/oss-security/2022/09/21/3 mailing-listMailing ListPatchThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2022-38177 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2128601 Issue Tracking
- https://kb.isc.org/docs/cve-2022-38177 PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00007.html mailing-listMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CV4GQWBPF7Y52J2FA24U6UMHQAOXZEF7/ vendor-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MRHB6J4Z7BKH4HPEKG5D35QGRD6ANNMT/ vendor-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZJQNUASODNVAWZV6STKG5SD6XIJ446S/ vendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2022-38177
- https://security.gentoo.org/glsa/202210-25 vendor-advisoryThird Party Advisory
- https://security.netapp.com/advisory/ntap-20221228-0010/ Third Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2022-38177
- https://www.debian.org/security/2022/dsa-5235 vendor-advisoryThird Party Advisory
Change history (0)
No recorded changes yet.