Vulnerability-Lookup

GSD-2023-26047

Vulnerability from gsd - Updated: 2023-12-13 01:20

Details

teler-waf is a Go HTTP middleware that provides teler IDS functionality to protect against web-based attacks. In teler-waf prior to version v0.2.0 is vulnerable to a bypass attack when a specific case-sensitive hex entities payload with special characters such as CR/LF and horizontal tab is used. This vulnerability allows an attacker to execute arbitrary JavaScript code on the victim's browser and compromise the security of the web application. An attacker can exploit this vulnerability to bypass common web attack threat rules in teler-waf and launch cross-site scripting (XSS) attacks. The attacker can execute arbitrary JavaScript code on the victim's browser and steal sensitive information, such as login credentials and session tokens, or take control of the victim's browser and perform malicious actions. This issue has been patched in version 0.2.0.

Aliases

CVE-2023-26047

Aliases

CVE-2023-26047

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2023-26047",
    "id": "GSD-2023-26047"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
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      "id": "GSD-2023-26047",
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          "fixed_versions": [
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          ],
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          "package_slug": "go/github.com/kitabisa/teler-waf",
          "pubdate": "2023-03-03",
          "solution": "Upgrade to version 0.2.0 or above.",
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              },
              "number": "v0.2.0"
            }
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        }
      },
      "lastModifiedDate": "2023-03-10T15:03Z",
      "publishedDate": "2023-03-03T23:15Z"
    }
  }
}

CVE-2023-26047 (GCVE-0-2023-26047)

Vulnerability from cvelistv5 – Published: 2023-03-03 22:44 – Updated: 2025-02-25 15:02

Title

teler-waf contains detection rule bypass via entities payload

Summary

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-25 14:31 UTC

CWE

CWE-80 - Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
CWE-692 - Incomplete Denylist to Cross-Site Scripting
CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7712 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/kitabisa/teler-waf/security/ad…	x_refsource_CONFIRM
https://github.com/dwisiswant0/cwa-filter-rules/c…	x_refsource_MISC
https://github.com/kitabisa/teler-waf/releases/ta…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
kitabisa	teler-waf	Affected: < 0.2.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T11:39:06.529Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/kitabisa/teler-waf/security/advisories/GHSA-p2pf-g8cq-3gq5",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/kitabisa/teler-waf/security/advisories/GHSA-p2pf-g8cq-3gq5"
          },
          {
            "name": "https://github.com/dwisiswant0/cwa-filter-rules/commit/d818d1645832d1a02cd210c7680e692d2bf4313b",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/dwisiswant0/cwa-filter-rules/commit/d818d1645832d1a02cd210c7680e692d2bf4313b"
          },
          {
            "name": "https://github.com/kitabisa/teler-waf/releases/tag/v0.2.0",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/kitabisa/teler-waf/releases/tag/v0.2.0"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-26047",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-25T14:31:44.948954Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-25T15:02:13.606Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "teler-waf",
          "vendor": "kitabisa",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.2.0"
            }
          ]
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      ],
      "descriptions": [
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          "lang": "en",
          "value": "teler-waf is a Go HTTP middleware that provides teler IDS functionality to protect against web-based attacks. In teler-waf prior to version v0.2.0 is vulnerable to a bypass attack when a specific case-sensitive hex entities payload with special characters such as CR/LF and horizontal tab is used. This vulnerability allows an attacker to execute arbitrary JavaScript code on the victim\u0027s browser and compromise the security of the web application. An attacker can exploit this vulnerability to bypass common web attack threat rules in teler-waf and launch cross-site scripting (XSS) attacks. The attacker can execute arbitrary JavaScript code on the victim\u0027s browser and steal sensitive information, such as login credentials and session tokens, or take control of the victim\u0027s browser and perform malicious actions. This issue has been patched in version 0.2.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
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              "description": "CWE-692: Incomplete Denylist to Cross-Site Scripting",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
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              "type": "CWE"
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      ],
      "providerMetadata": {
        "dateUpdated": "2023-03-03T22:44:16.538Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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      },
      "references": [
        {
          "name": "https://github.com/kitabisa/teler-waf/security/advisories/GHSA-p2pf-g8cq-3gq5",
          "tags": [
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          ],
          "url": "https://github.com/kitabisa/teler-waf/security/advisories/GHSA-p2pf-g8cq-3gq5"
        },
        {
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          ],
          "url": "https://github.com/dwisiswant0/cwa-filter-rules/commit/d818d1645832d1a02cd210c7680e692d2bf4313b"
        },
        {
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            "x_refsource_MISC"
          ],
          "url": "https://github.com/kitabisa/teler-waf/releases/tag/v0.2.0"
        }
      ],
      "source": {
        "advisory": "GHSA-p2pf-g8cq-3gq5",
        "discovery": "UNKNOWN"
      },
      "title": "teler-waf contains detection rule bypass via entities payload"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2023-26047",
    "datePublished": "2023-03-03T22:44:16.538Z",
    "dateReserved": "2023-02-17T22:44:03.150Z",
    "dateUpdated": "2025-02-25T15:02:13.606Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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

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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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