bind: high TCP query load can trigger memory leak
Published Jul 25, 2012
4.3
MEDIUMCVSS 2.0
EPSS 2.72%
Description
Race condition in the ns_client structure management in ISC BIND 9.9.x before 9.9.1-P2 allows remote attackers to cause a denial of service (memory consumption or process exit) via a large volume of TCP queries.
Affected products
No data.
- 9.9.0
- 9.9.0
- 9.9.0
- 9.9.0
- 9.9.0
- 9.9.0
- 9.9.0
- 9.9.0
- 9.9.0
- 9.9.0
- 9.9.1
- 9.9.1
No data.
Red Hat Enterprise Linux 5
bind
Not affected
Red Hat Enterprise Linux 5
bind97
Not affected
Red Hat Enterprise Linux 6
bind
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | bind | Not affected | n/a |
| Red Hat Enterprise Linux 5 | bind97 | Not affected | n/a |
| Red Hat Enterprise Linux 6 | bind | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of bind or bind97 as shipped with Red Hat Enterprise Linux 4, 5, and 6.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.72% (0.02722) | 85.53th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.72% (0.02722) | 84.07th | v5 (v2026.06.15) |
| Mar 30, 2025 | 2.17% (0.02175) | 82.83th | v4 (v2025.03.14) |
| Mar 29, 2025 | 6.50% (0.06496) | 84.74th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.05% (0.02052) | 82.67th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.24% (0.00235) | 62.44th | v3 (v2023.03.01) |
| Jun 15, 2023 | 0.24% (0.00235) | 60.31th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.24% (0.00241) | 60.28th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.05% (0.01055) | 50.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
References (6)
- http://www.slackware.com/security/viewer.php?l=slackware-security&y=2012&m=slackware-security.536004 vendor-advisoryx_refsource_SLACKWARE
- https://access.redhat.com/security/cve/CVE-2012-3868 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=842895 Issue Tracking
- https://kb.isc.org/article/AA-00730 x_refsource_CONFIRMVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2012-3868
- https://www.cve.org/CVERecord?id=CVE-2012-3868
| Link | Providers | Tags |
|---|---|---|
| http://www.slackware.com/security/viewer.php?l=slackware-security&y=2012&m=slackware-security.536004 | vendor-advisoryx_refsource_SLACKWARE | |
| https://access.redhat.com/security/cve/CVE-2012-3868 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=842895 | Issue Tracking | |
| https://kb.isc.org/article/AA-00730 | x_refsource_CONFIRMVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2012-3868 | ||
| https://www.cve.org/CVERecord?id=CVE-2012-3868 |
Change history (0)
No recorded changes yet.