usn-3527-1
Vulnerability from osv_ubuntu
Published
2018-01-10 13:30
Modified
2026-04-22 07:36
Summary
irssi vulnerabilities
Details

Joseph Bisch discovered that Irssi incorrectly handled incomplete escape codes. If a user were tricked into using malformed commands or opening malformed files, an attacker could use this issue to cause Irssi to crash, resulting in a denial of service. (CVE-2018-5205)

Joseph Bisch discovered that Irssi incorrectly handled settings the channel topic without specifying a sender. A malicious IRC server could use this issue to cause Irssi to crash, resulting in a denial of service. (CVE-2018-5206)

Joseph Bisch discovered that Irssi incorrectly handled incomplete variable arguments. If a user were tricked into using malformed commands or opening malformed files, an attacker could use this issue to cause Irssi to crash, resulting in a denial of service. (CVE-2018-5207)

Joseph Bisch discovered that Irssi incorrectly handled completing certain strings. An attacker could use this issue to cause Irssi to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2018-5208)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2018-5205",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-5206",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-5207",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-5208",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "irssi",
            "binary_version": "0.8.15-5ubuntu3.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "irssi",
        "purl": "pkg:deb/ubuntu/irssi@0.8.15-5ubuntu3.4?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.8.15-5ubuntu3.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.8.15-5ubuntu2",
        "0.8.15-5ubuntu3",
        "0.8.15-5ubuntu3.1",
        "0.8.15-5ubuntu3.2",
        "0.8.15-5ubuntu3.3"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2018-5205",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-5206",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-5207",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-5208",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "irssi",
            "binary_version": "0.8.19-1ubuntu1.6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "irssi",
        "purl": "pkg:deb/ubuntu/irssi@0.8.19-1ubuntu1.6?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.8.19-1ubuntu1.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.8.17-1ubuntu1",
        "0.8.17-1ubuntu2",
        "0.8.18-1ubuntu1",
        "0.8.19-1ubuntu1",
        "0.8.19-1ubuntu1.2",
        "0.8.19-1ubuntu1.3",
        "0.8.19-1ubuntu1.4",
        "0.8.19-1ubuntu1.5"
      ]
    }
  ],
  "aliases": [],
  "details": "Joseph Bisch discovered that Irssi incorrectly handled incomplete escape\ncodes. If a user were tricked into using malformed commands or opening\nmalformed files, an attacker could use this issue to cause Irssi to crash,\nresulting in a denial of service. (CVE-2018-5205)\n\nJoseph Bisch discovered that Irssi incorrectly handled settings the channel\ntopic without specifying a sender. A malicious IRC server could use this\nissue to cause Irssi to crash, resulting in a denial of service.\n(CVE-2018-5206)\n\nJoseph Bisch discovered that Irssi incorrectly handled incomplete variable\narguments. If a user were tricked into using malformed commands or opening\nmalformed files, an attacker could use this issue to cause Irssi to crash,\nresulting in a denial of service. (CVE-2018-5207)\n\nJoseph Bisch discovered that Irssi incorrectly handled completing certain\nstrings. An attacker could use this issue to cause Irssi to crash,\nresulting in a denial of service, or possibly execute arbitrary code.\n(CVE-2018-5208)\n",
  "id": "USN-3527-1",
  "modified": "2026-04-22T07:36:35Z",
  "published": "2018-01-10T13:30:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3527-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-5205"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-5206"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-5207"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-5208"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "irssi vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2018-5205",
    "UBUNTU-CVE-2018-5206",
    "UBUNTU-CVE-2018-5207",
    "UBUNTU-CVE-2018-5208"
  ]
}



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Sightings

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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.