Vulnerability-Lookup

FKIE_CVE-2017-15721

Vulnerability from fkie_nvd - Published: 2017-10-22 20:29 - Updated: 2026-06-17 01:08

Severity

7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

In Irssi before 1.0.5, certain incorrectly formatted DCC CTCP messages could cause a NULL pointer dereference. This is a separate, but similar, issue relative to CVE-2017-9468.

References

URL	Tags
cve@mitre.org	http://openwall.com/lists/oss-security/2017/10/22/4	Mailing List, Mitigation, Patch, Third Party Advisory
cve@mitre.org	https://irssi.org/security/irssi_sa_2017_10.txt	Mitigation, Patch, Vendor Advisory
cve@mitre.org	https://lists.debian.org/debian-lts-announce/2017/12/msg00022.html	Mailing List, Third Party Advisory
cve@mitre.org	https://www.debian.org/security/2017/dsa-4016	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	http://openwall.com/lists/oss-security/2017/10/22/4	Mailing List, Mitigation, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://irssi.org/security/irssi_sa_2017_10.txt	Mitigation, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2017/12/msg00022.html	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.debian.org/security/2017/dsa-4016	Third Party Advisory

Impacted products

Vendor	Product	Version
irssi	irssi	*
debian	debian_linux	7.0
debian	debian_linux	8.0
debian	debian_linux	9.0

JSON

To clipboard

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      "affectedData": [
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          "product": "n/a",
          "vendor": "n/a",
          "versions": [
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              "status": "affected",
              "version": "n/a"
            }
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    }
  ],
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              "matchCriteriaId": "9E81D7B5-7308-446B-A190-AB9D9813C33F",
              "versionEndIncluding": "1.0.4",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
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      ]
    },
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              "vulnerable": true
            },
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              "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43",
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              "vulnerable": true
            }
          ],
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
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    },
    {
      "lang": "es",
      "value": "En Irssi en versiones anteriores a la 1.0.5, ciertos mensajes DCC CTCP con formato incorrecto podr\u00edan provocar una desreferencia de puntero NULL. Este es un problema aparte, pero similar a CVE-2017-9468."
    }
  ],
  "id": "CVE-2017-15721",
  "lastModified": "2026-06-17T01:08:09.887",
  "metrics": {
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        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
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        "impactScore": 2.9,
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        "obtainOtherPrivilege": false,
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        "type": "Primary",
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          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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        "Third Party Advisory"
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      "url": "https://lists.debian.org/debian-lts-announce/2017/12/msg00022.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2017/dsa-4016"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2017-15721 (GCVE-0-2017-15721)

Vulnerability from cvelistv5 – Published: 2017-10-22 17:00 – Updated: 2024-08-05 20:04

Summary

In Irssi before 1.0.5, certain incorrectly formatted DCC CTCP messages could cause a NULL pointer dereference. This is a separate, but similar, issue relative to CVE-2017-9468.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

4 references

URL	Tags
https://www.debian.org/security/2017/dsa-4016	vendor-advisoryx_refsource_DEBIAN
https://lists.debian.org/debian-lts-announce/2017…	mailing-listx_refsource_MLIST
https://irssi.org/security/irssi_sa_2017_10.txt	x_refsource_CONFIRM
http://openwall.com/lists/oss-security/2017/10/22/4	x_refsource_CONFIRM

Date Public

2017-10-22 00:00

Show details on NVD website

JSON

To clipboard

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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.

Detection rules are retrieved from Rulezet.

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.