Vulnerability-Lookup

OPENSUSE-SU-2019:1475-1

Vulnerability from csaf_opensuse - Published: 2019-05-30 06:17 - Updated: 2019-05-30 06:17

Summary

Security update for libu2f-host

Severity

Low

Notes

Title of the patch: Security update for libu2f-host

Description of the patch: This update for libu2f-host fixes the following issues: Security issue fixed: - CVE-2018-20340: Fixed an unchecked buffer, which could allow a buffer overflow with a custom made malicious USB device (bsc#1124781). This update was imported from the SUSE:SLE-15:Update update project.

Patchnames: openSUSE-2019-1475

CVE-2018-20340

6.4 (Medium)


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

Affected products

Recommended 8 products

Product	Version	Remediation
Unresolved product id: openSUSE Leap 15.0:libu2f-host-devel-1.1.6-lp151.2.3.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.0:libu2f-host-doc-1.1.6-lp151.2.3.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.0:libu2f-host0-1.1.6-lp151.2.3.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.0:u2f-host-1.1.6-lp151.2.3.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.1:libu2f-host-devel-1.1.6-lp151.2.3.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.1:libu2f-host-doc-1.1.6-lp151.2.3.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.1:libu2f-host0-1.1.6-lp151.2.3.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.1:u2f-host-1.1.6-lp151.2.3.1.x86_64	—	Vendor Fix

Threats

Impact moderate

References

8 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/o…	self
https://lists.opensuse.org/archives/list/security…	self
https://lists.opensuse.org/archives/list/security…	self
https://bugzilla.suse.com/1124781	self
https://www.suse.com/security/cve/CVE-2018-20340/	self
https://www.suse.com/security/cve/CVE-2018-20340	external
https://bugzilla.suse.com/1124781	external

JSON

To clipboard

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CVE-2018-20340 (GCVE-0-2018-20340)

Vulnerability from cvelistv5 – Published: 2019-03-17 20:06 – Updated: 2024-08-05 11:58

Summary

Yubico libu2f-host 1.1.6 contains unchecked buffers in devs.c, which could enable a malicious token to exploit a buffer overflow. An attacker could use this to attempt to execute malicious code using a crafted USB device masquerading as a security token on a computer where the affected library is currently in use. It is not possible to perform this attack with a genuine YubiKey.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

6 references

URL	Tags
https://seclists.org/bugtraq/2019/Feb/23	x_refsource_MISC
https://www.debian.org/security/2019/dsa-4389	x_refsource_MISC
https://www.yubico.com/support/security-advisorie…	x_refsource_CONFIRM
https://developers.yubico.com/libu2f-host/Release…	x_refsource_CONFIRM
https://blog.inhq.net/posts/yubico-libu2f-host-vu…	x_refsource_MISC
https://security.gentoo.org/glsa/202004-15	vendor-advisoryx_refsource_GENTOO

Date Public

2019-02-08 00:00

Show details on NVD website

JSON

To clipboard

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                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Yubico libu2f-host 1.1.6 contains unchecked buffers in devs.c, which could enable a malicious token to exploit a buffer overflow. An attacker could use this to attempt to execute malicious code using a crafted USB device masquerading as a security token on a computer where the affected library is currently in use. It is not possible to perform this attack with a genuine YubiKey."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://seclists.org/bugtraq/2019/Feb/23",
              "refsource": "MISC",
              "url": "https://seclists.org/bugtraq/2019/Feb/23"
            },
            {
              "name": "https://www.debian.org/security/2019/dsa-4389",
              "refsource": "MISC",
              "url": "https://www.debian.org/security/2019/dsa-4389"
            },
            {
              "name": "https://www.yubico.com/support/security-advisories/ysa-2019-01/",
              "refsource": "CONFIRM",
              "url": "https://www.yubico.com/support/security-advisories/ysa-2019-01/"
            },
            {
              "name": "https://developers.yubico.com/libu2f-host/Release_Notes.html",
              "refsource": "CONFIRM",
              "url": "https://developers.yubico.com/libu2f-host/Release_Notes.html"
            },
            {
              "name": "https://blog.inhq.net/posts/yubico-libu2f-host-vuln-part1/",
              "refsource": "MISC",
              "url": "https://blog.inhq.net/posts/yubico-libu2f-host-vuln-part1/"
            },
            {
              "name": "GLSA-202004-15",
              "refsource": "GENTOO",
              "url": "https://security.gentoo.org/glsa/202004-15"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2018-20340",
    "datePublished": "2019-03-17T20:06:42.000Z",
    "dateReserved": "2018-12-21T00:00:00.000Z",
    "dateUpdated": "2024-08-05T11:58:18.796Z",
    "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.

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.