A vulnerability in the web interface of the Cisco Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition
Published Jun 7, 2018 ·Due May 3, 2022
7.5
HIGHCVSS 3.1
EPSS 99.91%
Description
A vulnerability in the web interface of the Cisco Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. It is also possible on certain software releases that the ASA will not reload, but an attacker could view sensitive system information without authentication by using directory traversal techniques. The vulnerability is due to lack of proper input validation of the HTTP URL. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. An exploit could allow the attacker to cause a DoS condition or unauthenticated disclosure of information. This vulnerability applies to IPv4 and IPv6 HTTP traffic. This vulnerability affects Cisco ASA Software and Cisco Firepower Threat Defense (FTD) Software that is running on the following Cisco products: 3000 Series Industrial Security Appliance (ISA), ASA 1000V Cloud Firewall, ASA 5500 Series Adaptive Security Appliances, ASA 5500-X Series Next-Generation Firewalls, ASA Services Module for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers, Adaptive Security Virtual Appliance (ASAv), Firepower 2100 Series Security Appliance, Firepower 4100 Series Security Appliance, Firepower 9300 ASA Security Module, FTD Virtual (FTDv). Cisco Bug IDs: CSCvi16029.
Affected products
- Vendor n/a Product Cisco Adaptive Security Appliance unknown Defaultn/a
- Version Cisco Adaptive Security Appliance unknownStatusaffectedConstraints-
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Cisco Adaptive Security Appliance unknown | n/a |
|
Configuration 1
- ≥ 9.1 · < 9.1.7.29
- ≥ 9.2 · < 9.2.4.33
- ≥ 9.3 · < 9.4.4.18
- ≥ 9.5 · < 9.6.4.8
- ≥ 9.7 · < 9.7.1.24
- ≥ 9.8 · < 9.8.2.28
- ≥ 9.9 · < 9.9.2.1
Configuration 2
- 6.2.3-85.02
- 6.2.3-851
- ≥ 6.0 · < 6.1.0
- ≥ 6.2.1 · < 6.2.2.3
- 6.2.3
- 6.2.3.1
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
Date Added
Nov 3, 2021
Patch Due
May 3, 2022
Required Action
Apply updates per vendor instructions.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
ActiveAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Nov 8, 2024 · SSVC 2.0.3
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 v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (23 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 99.91% (0.99913) | 99.97th | v5 (v2026.06.15) |
| Jun 15, 2026 | 99.90% (0.99903) | 99.96th | v5 (v2026.06.15) |
| Mar 17, 2025 | 94.44% (0.94438) | 99.99th | v4 (v2025.03.14) |
| Dec 12, 2024 | 97.47% (0.97475) | 99.98th | v3 (v2023.03.01) |
| May 17, 2024 | 97.44% (0.97436) | 99.94th | v3 (v2023.03.01) |
| Apr 16, 2024 | 97.41% (0.97408) | 99.93th | v3 (v2023.03.01) |
| Feb 21, 2024 | 97.43% (0.97432) | 99.94th | v3 (v2023.03.01) |
| Jan 25, 2024 | 97.41% (0.97411) | 99.92th | v3 (v2023.03.01) |
| Jan 1, 2024 | 97.42% (0.97420) | 99.92th | v3 (v2023.03.01) |
| Nov 19, 2023 | 97.38% (0.97381) | 99.90th | v3 (v2023.03.01) |
| Oct 29, 2023 | 97.36% (0.97359) | 99.86th | v3 (v2023.03.01) |
| Oct 7, 2023 | 97.45% (0.97446) | 99.93th | v3 (v2023.03.01) |
| Sep 16, 2023 | 97.45% (0.97452) | 99.92th | v3 (v2023.03.01) |
| Aug 12, 2023 | 97.45% (0.97446) | 99.91th | v3 (v2023.03.01) |
| Jul 6, 2023 | 97.46% (0.97461) | 99.92th | v3 (v2023.03.01) |
| Jun 1, 2023 | 97.49% (0.97488) | 99.95th | v3 (v2023.03.01) |
| Apr 29, 2023 | 97.50% (0.97501) | 99.96th | v3 (v2023.03.01) |
| Mar 7, 2023 | 97.49% (0.97493) | 99.95th | v3 (v2023.03.01) |
| Mar 6, 2023 | 96.11% (0.96113) | 99.99th | v2 (v2022.01.01) |
| Feb 4, 2022 | 96.11% (0.96113) | 99.99th | v2 (v2022.01.01) |
| Feb 3, 2022 | 44.92% (0.44921) | 98.86th | v1 |
| Sep 1, 2021 | 44.92% (0.44921) | 99.48th | v1 |
| Apr 14, 2021 | 44.92% (0.44921) | 0.00th | v1 |
References (7)
- http://packetstormsecurity.com/files/154017/Cisco-Adaptive-Security-Appliance-Path-Traversal.html x_refsource_MISCExploitThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/104612 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041076 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-184-01 x_refsource_MISCThird Party AdvisoryUS Government Resource
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180606-asaftd x_refsource_CONFIRMVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0296 government-resourceUS Government Resource
- https://www.exploit-db.com/exploits/44956/ exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| http://packetstormsecurity.com/files/154017/Cisco-Adaptive-Security-Appliance-Path-Traversal.html | x_refsource_MISCExploitThird Party AdvisoryVDB Entry | |
| http://www.securityfocus.com/bid/104612 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1041076 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://ics-cert.us-cert.gov/advisories/ICSA-18-184-01 | x_refsource_MISCThird Party AdvisoryUS Government Resource | |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180606-asaftd | x_refsource_CONFIRMVendor Advisory | |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0296 | government-resourceUS Government Resource | |
| https://www.exploit-db.com/exploits/44956/ | exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.