Multiple Cisco Products SNORT HTTP Detection Engine File Policy Bypass Vulnerability
Published Oct 21, 2020
5.8
MEDIUMCVSS 3.1
EPSS 2.31%
Description
Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured File Policy for HTTP. The vulnerability is due to incorrect detection of modified HTTP packets used in chunked responses. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass a configured File Policy for HTTP packets and deliver a malicious payload.
Affected products
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||
|---|---|---|---|---|---|---|
| Cisco | Cisco Firepower Threat Defense Software | n/a |
|
Configuration 1
- ≥ 6.0.0 · < 6.3.0.1
Running on/with
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
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:C/C:N/I:L/A:N
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
AV:N/AC:L/Au:N/C:N/I:P/A:N
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 Nov 13, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 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 (14 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 2.31% (0.02307) | 82.76th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.28% (0.02279) | 80.79th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.08% (0.00084) | 36.51th | v3 (v2023.03.01) |
| Jan 23, 2024 | 0.08% (0.00084) | 35.11th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.09% (0.00090) | 38.05th | v3 (v2023.03.01) |
| Sep 15, 2023 | 0.08% (0.00085) | 35.29th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.08% (0.00082) | 33.16th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.50% (0.04499) | 74.08th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.30% (0.02304) | 53.71th | v5 (v2026.06.15) |
| Jan 6, 2022 | 2.30% (0.02304) | 53.25th | v1 |
| Sep 1, 2021 | 0.52% (0.00523) | 32.27th | v1 |
| Apr 14, 2021 | 0.52% (0.00523) | 0.00th | v1 |
References (3)
- https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html mailing-list
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-bypass-3eCfd24j vendor-advisoryVendor Advisory
- https://www.debian.org/security/2023/dsa-5354 vendor-advisory
| Link | Providers | Tags |
|---|---|---|
| https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html | mailing-list | |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-bypass-3eCfd24j | vendor-advisoryVendor Advisory | |
| https://www.debian.org/security/2023/dsa-5354 | vendor-advisory |
Change history (0)
No recorded changes yet.