Vulnerability-Lookup

ubuntu-cve-2016-4356

Vulnerability from osv_ubuntu

Published

2016-04-29 00:00

Modified

2026-04-22 07:37

Summary

Details

The append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.3 allows remote attackers to cause a denial of service (out-of-bounds read) by clearing the high bit of the byte after invalid utf-8 encoded data.

Severity

7.5 (High)


                    
                      CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2016-4356	REPORT
	http://www.openwall.com/lists/oss-security/2015/04/13/5	REPORT
	http://www.openwall.com/lists/oss-security/2016/04/29/5	REPORT
	https://ubuntu.com/security/notices/USN-2982-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2016-4356	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libksba8",
            "binary_version": "1.3.0-3ubuntu0.14.04.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "libksba",
        "purl": "pkg:deb/ubuntu/libksba@1.3.0-3ubuntu0.14.04.2?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.3.0-3ubuntu0.14.04.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.0-2",
        "1.3.0-2ubuntu1",
        "1.3.0-3",
        "1.3.0-3ubuntu0.14.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "The append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.3 allows remote attackers to cause a denial of service (out-of-bounds read) by clearing the high bit of the byte after invalid utf-8 encoded data.",
  "id": "UBUNTU-CVE-2016-4356",
  "modified": "2026-04-22T07:37:58Z",
  "published": "2016-04-29T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-4356"
    },
    {
      "type": "REPORT",
      "url": "http://www.openwall.com/lists/oss-security/2015/04/13/5"
    },
    {
      "type": "REPORT",
      "url": "http://www.openwall.com/lists/oss-security/2016/04/29/5"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-2982-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2016-4356"
    }
  ],
  "related": [
    "USN-2982-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2016-4356"
  ]
}

CVE-2016-4356 (GCVE-0-2016-4356)

Vulnerability from cvelistv5 – Published: 2016-06-13 19:00 – Updated: 2024-08-06 00:25

Summary

Severity

No CVSS data available.

CWE

Assigner

redhat

References

6 references

URL	Tags
http://www.openwall.com/lists/oss-security/2016/05/10/3	mailing-listx_refsource_MLIST
http://www.ubuntu.com/usn/USN-2982-1	vendor-advisoryx_refsource_UBUNTU
http://www.openwall.com/lists/oss-security/2016/04/29/5	mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2016/04/29/8	mailing-listx_refsource_MLIST
http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba…	x_refsource_CONFIRM
https://security.gentoo.org/glsa/201604-04	vendor-advisoryx_refsource_GENTOO

Date Public

2015-04-08 00:00

Show details on NVD website

JSON

To clipboard

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        },
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          "name": "GLSA-201604-04",
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            "x_refsource_GENTOO"
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      "x_legacyV4Record": {
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            {
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              "url": "http://www.ubuntu.com/usn/USN-2982-1"
            },
            {
              "name": "[oss-security] 20160429 CVE request: three issues in libksba",
              "refsource": "MLIST",
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            },
            {
              "name": "[oss-security] 20160429 Re: CVE request: three issues in libksba",
              "refsource": "MLIST",
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            },
            {
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    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

usn-2982-1

Vulnerability from osv_ubuntu

Published

2016-05-17 15:34

Modified

2026-04-22 07:36

Summary

libksba vulnerabilities

Details

Hanno Böck discovered that Libksba incorrectly handled decoding certain BER data. An attacker could use this issue to cause Libksba to crash, resulting in a denial of service. This issue only applied to Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2016-4353)

Hanno Böck discovered that Libksba incorrectly handled decoding certain BER data. An attacker could use this issue to cause Libksba to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only applied to Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2016-4354, CVE-2016-4355)

Hanno Böck discovered that Libksba incorrectly handled incorrect utf-8 strings when decoding certain DN data. An attacker could use this issue to cause Libksba to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only applied to Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2016-4356)

Pascal Cuoq discovered that Libksba incorrectly handled incorrect utf-8 strings when decoding certain DN data. An attacker could use this issue to cause Libksba to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2016-4574)

Pascal Cuoq discovered that Libksba incorrectly handled decoding certain data. An attacker could use this issue to cause Libksba to crash, resulting in a denial of service. (CVE-2016-4579)

References

URL

Type

	https://ubuntu.com/security/notices/USN-2982-1	ADVISORY
	https://ubuntu.com/security/CVE-2016-4353	REPORT
	https://ubuntu.com/security/CVE-2016-4354	REPORT
	https://ubuntu.com/security/CVE-2016-4355	REPORT
	https://ubuntu.com/security/CVE-2016-4356	REPORT
	https://ubuntu.com/security/CVE-2016-4574	REPORT
	https://ubuntu.com/security/CVE-2016-4579	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2016-4353",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2016-4354",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2016-4355",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2016-4356",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2016-4574",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2016-4579",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libksba8",
            "binary_version": "1.3.0-3ubuntu0.14.04.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "libksba",
        "purl": "pkg:deb/ubuntu/libksba@1.3.0-3ubuntu0.14.04.2?arch=source\u0026distro=trusty"
      },
      "ranges": [
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            },
            {
              "fixed": "1.3.0-3ubuntu0.14.04.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.0-2",
        "1.3.0-2ubuntu1",
        "1.3.0-3",
        "1.3.0-3ubuntu0.14.04.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2016-4574",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2016-4579",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libksba8",
            "binary_version": "1.3.3-1ubuntu0.16.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "libksba",
        "purl": "pkg:deb/ubuntu/libksba@1.3.3-1ubuntu0.16.04.1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.3.3-1ubuntu0.16.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.3-1"
      ]
    }
  ],
  "aliases": [],
  "details": "Hanno B\u00f6ck discovered that Libksba incorrectly handled decoding certain BER\ndata. An attacker could use this issue to cause Libksba to crash, resulting\nin a denial of service. This issue only applied to Ubuntu 12.04 LTS and\nUbuntu 14.04 LTS. (CVE-2016-4353)\n\nHanno B\u00f6ck discovered that Libksba incorrectly handled decoding certain BER\ndata. An attacker could use this issue to cause Libksba to crash, resulting\nin a denial of service, or possibly execute arbitrary code. This issue only\napplied to Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2016-4354,\nCVE-2016-4355)\n\nHanno B\u00f6ck discovered that Libksba incorrectly handled incorrect utf-8\nstrings when decoding certain DN data. An attacker could use this issue to\ncause Libksba to crash, resulting in a denial of service, or possibly\nexecute arbitrary code. This issue only applied to Ubuntu 12.04 LTS and\nUbuntu 14.04 LTS. (CVE-2016-4356)\n\nPascal Cuoq discovered that Libksba incorrectly handled incorrect utf-8\nstrings when decoding certain DN data. An attacker could use this issue to\ncause Libksba to crash, resulting in a denial of service, or possibly\nexecute arbitrary code. (CVE-2016-4574)\n\nPascal Cuoq discovered that Libksba incorrectly handled decoding certain\ndata. An attacker could use this issue to cause Libksba to crash, resulting\nin a denial of service. (CVE-2016-4579)\n",
  "id": "USN-2982-1",
  "modified": "2026-04-22T07:36:33Z",
  "published": "2016-05-17T15:34:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-2982-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-4353"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-4354"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-4355"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-4356"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-4574"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-4579"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "libksba vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2016-4353",
    "UBUNTU-CVE-2016-4354",
    "UBUNTU-CVE-2016-4355",
    "UBUNTU-CVE-2016-4356",
    "UBUNTU-CVE-2016-4574",
    "UBUNTU-CVE-2016-4579"
  ]
}

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.

Action not permitted

ubuntu-cve-2016-4356

Vulnerability from osv_ubuntu

CVE-2016-4356 (GCVE-0-2016-4356)

usn-2982-1

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature