On BIG-IP 11.5.1-11.6.4, iRules performing HTTP header manipulation may cause an interruption to service when processing traffic handled by a Virtual Server with an associated HTTP profile, in specific circumstances, when the requests do not strictly conform to RFCs
Published Jul 3, 2019
7.5
HIGHCVSS 3.1
EPSS 2.53%
Description
On BIG-IP 11.5.1-11.6.4, iRules performing HTTP header manipulation may cause an interruption to service when processing traffic handled by a Virtual Server with an associated HTTP profile, in specific circumstances, when the requests do not strictly conform to RFCs.
Affected products
-
- Version BIG-IP 11.5.1-11.6.4StatusaffectedConstraints-
- Version
Configuration 1
- ≥ 11.5.2 · ≤ 11.6.4
Configuration 2
- ≥ 11.5.2 · ≤ 11.6.4
Configuration 3
- ≥ 11.5.2 · ≤ 11.6.4
Configuration 4
- ≥ 11.5.2 · ≤ 11.6.4
Configuration 5
- ≥ 11.5.2 · ≤ 11.6.4
Configuration 6
- ≥ 11.5.2 · ≤ 11.6.4
Configuration 7
- ≥ 11.5.2 · ≤ 11.6.4
Configuration 8
- ≥ 11.5.2 · ≤ 11.6.4
Configuration 9
- ≥ 11.5.2 · ≤ 11.6.4
Configuration 10
- ≥ 11.5.2 · ≤ 11.6.4
Configuration 11
- ≥ 11.5.2 · ≤ 11.6.4
Configuration 12
- ≥ 11.5.2 · ≤ 11.6.4
Configuration 13
- ≥ 11.5.2 · ≤ 11.6.4
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.
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.
AV:N/AC:L/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 3, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 2.53% (0.02531) | 84.38th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.53% (0.02531) | 82.81th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.34% (0.00344) | 71.87th | v3 (v2023.03.01) |
| Jun 26, 2024 | 0.34% (0.00344) | 71.75th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.33% (0.00334) | 70.43th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.33% (0.00334) | 68.00th | v3 (v2023.03.01) |
| Jul 8, 2023 | 0.32% (0.00324) | 66.67th | v3 (v2023.03.01) |
| May 7, 2023 | 0.34% (0.00338) | 67.02th | v3 (v2023.03.01) |
| Apr 22, 2023 | 0.25% (0.00246) | 60.98th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.21% (0.00205) | 56.69th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Sep 2, 2022 | 0.95% (0.00954) | 34.50th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Feb 4, 2022 | 8.66% (0.08659) | 82.76th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.63% (0.03630) | 71.73th | v1 |
| Jan 6, 2022 | 3.63% (0.03630) | 71.48th | v1 |
| Sep 1, 2021 | 0.83% (0.00833) | 57.50th | v1 |
| Apr 14, 2021 | 0.83% (0.00833) | 0.00th | v1 |
No CWE recorded.
References (3)
- http://www.securityfocus.com/bid/109119 vdb-entryx_refsource_BIDBroken LinkThird Party AdvisoryVDB Entry
- https://support.f5.com/csp/article/K19501795 x_refsource_CONFIRMVendor Advisory
- https://support.f5.com/csp/article/K19501795?utm_source=f5support&%3Butm_medium=RSS x_refsource_CONFIRM
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/109119 | vdb-entryx_refsource_BIDBroken LinkThird Party AdvisoryVDB Entry | |
| https://support.f5.com/csp/article/K19501795 | x_refsource_CONFIRMVendor Advisory | |
| https://support.f5.com/csp/article/K19501795?utm_source=f5support&%3Butm_medium=RSS | x_refsource_CONFIRM |
Change history (0)
No recorded changes yet.