CRITICAL
process_http_response in OpenConnect before 8.05 has a Buffer Overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes
Published Sep 17, 2019
9.8
CRITICALCVSS 3.1
EPSS 3.45%
Description
process_http_response in OpenConnect before 8.05 has a Buffer Overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes.
Affected products
No data.
Configuration 1
- < 8.05
Configuration 2
OR
- 29
- 30
- 31
Configuration 3
OR
- 8.0
- 9.0
- 10.0
Configuration 4
- 18.04
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.
9.8 CRITICAL NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
No CVSS v3.0 score for this CVE.
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
3.45% 0.03445
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.03445
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (25 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 3.45% (0.03445) | 88.62th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.45% (0.03445) | 87.42th | v5 (v2026.06.15) |
| Dec 28, 2025 | 8.53% (0.08525) | 92.08th | v4 (v2025.03.14) |
| Dec 27, 2025 | 4.78% (0.04782) | 89.17th | v4 (v2025.03.14) |
| Oct 28, 2025 | 8.53% (0.08525) | 91.98th | v4 (v2025.03.14) |
| Oct 27, 2025 | 4.78% (0.04782) | 89.00th | v4 (v2025.03.14) |
| Oct 1, 2025 | 8.53% (0.08525) | 92.07th | v4 (v2025.03.14) |
| Mar 30, 2025 | 5.62% (0.05621) | 89.39th | v4 (v2025.03.14) |
| Mar 29, 2025 | 9.55% (0.09555) | 87.99th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.17% (0.05175) | 89.17th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.78% (0.00780) | 82.08th | v3 (v2023.03.01) |
| May 8, 2024 | 0.71% (0.00712) | 80.37th | v3 (v2023.03.01) |
| Jan 11, 2024 | 0.71% (0.00712) | 78.37th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.72% (0.00721) | 78.39th | v3 (v2023.03.01) |
| Sep 3, 2023 | 2.13% (0.02130) | 87.82th | v3 (v2023.03.01) |
| Jun 4, 2023 | 2.04% (0.02035) | 87.31th | v3 (v2023.03.01) |
| Mar 30, 2023 | 3.08% (0.03077) | 89.50th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.49% (0.00486) | 72.29th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 17.17% (0.17166) | 93.10th | v2 (v2022.01.01) |
| Feb 3, 2022 | 10.22% (0.10225) | 87.52th | v1 |
| Jan 6, 2022 | 10.22% (0.10225) | 87.37th | v1 |
| Jan 5, 2022 | 2.48% (0.02476) | 79.39th | v5 (v2026.06.15) |
| Apr 14, 2021 | 2.48% (0.02476) | 0.00th | v1 |
Weaknesses (1)
References (11)
- http://lists.infradead.org/pipermail/openconnect-devel/2019-September/005412.html x_refsource_CONFIRMBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00060.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00061.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/10/msg00003.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FX56KYWC7X4ETV4P6HGJC7GZUEBITBBS/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HDMZGNBLZZKAGBI2PNXYWWKLD2LXKFH6/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WI7ZENFAWCHF2RU4NHPL2CU4WGZ4BNDJ/ vendor-advisoryx_refsource_FEDORA
- https://seclists.org/bugtraq/2020/Jan/31 mailing-listx_refsource_BUGTRAQMailing ListThird Party Advisory
- https://t2.fi/schedule/2019/ x_refsource_MISCNot Applicable
- https://usn.ubuntu.com/4565-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.debian.org/security/2020/dsa-4607 vendor-advisoryx_refsource_DEBIANThird Party Advisory
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Sep 17, 2019
Updated Aug 5, 2024
Reserved Sep 11, 2019
Link CVE-2019-16239
CISA Vulnrichment
Updated n/a