In some circumstances, on F5 BIG-IP systems running 13.0.0, 12.1.0 - 12.1.3.1, any 11.6.x or 11.5.x release, or 11.2.1, TCP DNS profile allows excessive buffering due to lack of flow control
Published Mar 1, 2018
5.9
MEDIUMCVSS 3.0
EPSS 1.33%
Description
In some circumstances, on F5 BIG-IP systems running 13.0.0, 12.1.0 - 12.1.3.1, any 11.6.x or 11.5.x release, or 11.2.1, TCP DNS profile allows excessive buffering due to lack of flow control.
Affected products
-
- Version 11.2.1StatusaffectedConstraints-
- Version 11.5.1 - 11.5.xStatusaffectedConstraints-
- Version 11.6.1 - 11.6.xStatusaffectedConstraints-
- Version 12.1.0 - 12.1.3.1StatusaffectedConstraints-
- Version 13.0.0StatusaffectedConstraints-
- 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 | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| F5 Networks, Inc. | n/a | n/a |
|
Configuration 1
- ≥ 11.5.1 · ≤ 11.5.4
- ≥ 11.6.1 · ≤ 11.6.2
- ≥ 12.1.0 · ≤ 12.1.3
- 11.2.1
- 13.0.0
Configuration 2
- ≥ 11.5.1 · ≤ 11.5.4
- ≥ 11.6.1 · ≤ 11.6.2
- ≥ 12.1.0 · ≤ 12.1.3
- 11.2.1
- 13.0.0
Configuration 3
- ≥ 11.5.1 · ≤ 11.5.4
- ≥ 11.6.1 · ≤ 11.6.2
- ≥ 12.1.0 · ≤ 12.1.3
- 11.2.1
- 13.0.0
Configuration 4
- ≥ 11.5.1 · ≤ 11.5.4
- ≥ 11.6.1 · ≤ 11.6.2
- ≥ 12.1.0 · ≤ 12.1.3
- 11.2.1
- 13.0.0
Configuration 5
- ≥ 11.5.1 · ≤ 11.5.4
- ≥ 11.6.1 · ≤ 11.6.2
- ≥ 12.1.0 · ≤ 12.1.3
- 11.2.1
- 13.0.0
Configuration 6
- ≥ 11.5.1 · ≤ 11.5.4
- ≥ 11.6.1 · ≤ 11.6.2
- ≥ 12.1.0 · ≤ 12.1.3
- 11.2.1
- 13.0.0
Configuration 7
- ≥ 11.5.1 · ≤ 11.5.4
- ≥ 11.6.1 · ≤ 11.6.2
- ≥ 12.1.0 · ≤ 12.1.3
- 11.2.1
- 13.0.0
Configuration 8
- ≥ 11.5.1 · ≤ 11.5.4
- ≥ 11.6.1 · ≤ 11.6.2
- ≥ 12.1.0 · ≤ 12.1.3
- 11.2.1
- 13.0.0
Configuration 9
- ≥ 11.5.1 · ≤ 11.5.4
- ≥ 11.6.1 · ≤ 11.6.2
- ≥ 12.1.0 · ≤ 12.1.3
- 11.2.1
- 13.0.0
Configuration 10
- ≥ 11.5.1 · ≤ 11.5.4
- ≥ 11.6.1 · ≤ 11.6.2
- ≥ 12.1.0 · ≤ 12.1.3
- 11.2.1
- 13.0.0
Configuration 11
- ≥ 11.5.1 · ≤ 11.5.4
- ≥ 11.6.1 · ≤ 11.6.2
- ≥ 12.1.0 · ≤ 12.1.3
- 11.2.1
- 13.0.0
Configuration 12
- ≥ 11.5.1 · ≤ 11.5.4
- ≥ 11.6.1 · ≤ 11.6.2
- ≥ 12.1.0 · ≤ 12.1.3
- 11.2.1
- 13.0.0
Configuration 13
- ≥ 11.5.1 · ≤ 11.5.4
- ≥ 11.6.1 · ≤ 11.6.2
- ≥ 12.1.0 · ≤ 12.1.3
- 11.2.1
- 13.0.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
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
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.33% (0.01333) | 70.09th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.33% (0.01333) | 69.86th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.09% (0.00094) | 40.39th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.09% (0.00093) | 38.85th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.11% (0.00112) | 42.92th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.62% (0.00624) | 17.80th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.62% (0.00624) | 0.00th | v1 |
References (2)
- http://www.securityfocus.com/bid/103211 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://support.f5.com/csp/article/K44200194 x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/103211 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://support.f5.com/csp/article/K44200194 | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.