Vulnerability-Lookup

VAR-202007-1057

Vulnerability from variot - Updated: 2025-11-18 15:33

A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct directory traversal attacks and read sensitive files on a targeted system. The vulnerability is due to a lack of proper input validation of URLs in HTTP requests processed by an affected device. An attacker could exploit this vulnerability by sending a crafted HTTP request containing directory traversal character sequences to an affected device. A successful exploit could allow the attacker to view arbitrary files within the web services file system on the targeted device. The web services file system is enabled when the affected device is configured with either WebVPN or AnyConnect features. This vulnerability cannot be used to obtain access to ASA or FTD system files or underlying operating system (OS) files. The Cisco ASA series is a series of customized solutions for security equipment launched by Cisco. It integrates advanced security and VPN services to protect business communications and organizations of all sizes from cyber threats.

Cisco has a variety of arbitrary file reading vulnerabilities, which can be exploited by attackers to obtain sensitive information. The platform provides features such as highly secure access to data and network resources

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CVE-2020-3452 (GCVE-0-2020-3452)

Vulnerability from cvelistv5 – Published: 2020-07-22 20:00 – Updated: 2025-10-21 23:35

Title

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Read-Only Path Traversal Vulnerability

Summary

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

SSVC

Exploitation: active Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-04 15:34 UTC

CWE

CWE-20

Assigner

cisco CNA under the mitre root

CNA scorecard C 66/100 over 430 records in the last 180 days details

References

6 references

URL	Tags
https://tools.cisco.com/security/center/content/C…	vendor-advisoryx_refsource_CISCO
http://packetstormsecurity.com/files/158646/Cisco…	x_refsource_MISC
http://packetstormsecurity.com/files/158647/Cisco…	x_refsource_MISC
http://packetstormsecurity.com/files/159523/Cisco…	x_refsource_MISC
http://packetstormsecurity.com/files/160497/Cisco…	x_refsource_MISC
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

1 product

Vendor	Product	Version
Cisco	Cisco Adaptive Security Appliance (ASA) Software	Affected: unspecified , < 9.6.4.42 (custom) Affected: unspecified , < 9.8.4.20 (custom) Affected: unspecified , < 9.9.2.74 (custom) Affected: unspecified , < 9.10.1.42 (custom) Affected: unspecified , < 9.13.1.10 (custom) Affected: unspecified , < 9.14.1.10 (custom)

Date Public

2020-07-22 00:00

Show details on NVD website

JSON

To clipboard

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          "value": "A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct directory traversal attacks and read sensitive files on a targeted system. The vulnerability is due to a lack of proper input validation of URLs in HTTP requests processed by an affected device. An attacker could exploit this vulnerability by sending a crafted HTTP request containing directory traversal character sequences to an affected device. A successful exploit could allow the attacker to view arbitrary files within the web services file system on the targeted device. The web services file system is enabled when the affected device is configured with either WebVPN or AnyConnect features. This vulnerability cannot be used to obtain access to ASA or FTD system files or underlying operating system (OS) files."
        }
      ],
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            "confidentialityImpact": "HIGH",
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        },
        {
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          "url": "http://packetstormsecurity.com/files/158646/Cisco-ASA-FTD-Remote-File-Disclosure.html"
        },
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          "url": "http://packetstormsecurity.com/files/158647/Cisco-Adaptive-Security-Appliance-Software-9.11-Local-File-Inclusion.html"
        },
        {
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          "url": "http://packetstormsecurity.com/files/159523/Cisco-ASA-FTD-9.6.4.42-Path-Traversal.html"
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        {
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      },
      "title": "Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Read-Only Path Traversal Vulnerability",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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