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FKIE_CVE-2018-1000001

Vulnerability from fkie_nvd - Published: 2018-01-31 14:29 - Updated: 2026-06-17 01:32
Severity
7.8 (High) - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In glibc 2.26 and earlier there is confusion in the usage of getcwd() by realpath() which can be used to write before the destination buffer leading to a buffer underflow and potential code execution.
References
cve@mitre.orghttp://seclists.org/oss-sec/2018/q1/38Mailing List, Third Party Advisory
cve@mitre.orghttp://www.securityfocus.com/bid/102525Third Party Advisory, VDB Entry
cve@mitre.orghttp://www.securitytracker.com/id/1040162Third Party Advisory, VDB Entry
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2018:0805Third Party Advisory
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20190404-0003/
cve@mitre.orghttps://usn.ubuntu.com/3534-1/Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3536-1/Third Party Advisory
cve@mitre.orghttps://www.exploit-db.com/exploits/43775/Exploit, Third Party Advisory, VDB Entry
cve@mitre.orghttps://www.exploit-db.com/exploits/44889/Exploit, Third Party Advisory, VDB Entry
cve@mitre.orghttps://www.halfdog.net/Security/2017/LibcRealpathBufferUnderflow/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/oss-sec/2018/q1/38Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/102525Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1040162Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2018:0805Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20190404-0003/
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3534-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3536-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/43775/Exploit, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/44889/Exploit, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://www.halfdog.net/Security/2017/LibcRealpathBufferUnderflow/Third Party Advisory
Impacted products
Vendor Product Version
gnu glibc *
canonical ubuntu_linux 12.04
canonical ubuntu_linux 14.04
canonical ubuntu_linux 16.04
canonical ubuntu_linux 17.10
redhat virtualization_host 4.0
redhat enterprise_linux_desktop 7.0
redhat enterprise_linux_server 7.0
redhat enterprise_linux_server_aus 7.6
redhat enterprise_linux_server_eus 7.6
redhat enterprise_linux_server_tus 7.6
redhat enterprise_linux_workstation 7.0
To clipboard 

{
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          "vendor": "n/a",
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              "status": "affected",
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            }
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  "cveTags": [],
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      "value": "In glibc 2.26 and earlier there is confusion in the usage of getcwd() by realpath() which can be used to write before the destination buffer leading to a buffer underflow and potential code execution."
    },
    {
      "lang": "es",
      "value": "En glibc 2.26 y anteriores existe una confusi\u00f3n en el uso de getcwd() por realpath(), que puede emplearse para escribir antes del b\u00fafer de destino. Esto conduce a un subdesbordamiento de b\u00fafer y a una potencial ejecuci\u00f3n de c\u00f3digo."
    }
  ],
  "id": "CVE-2018-1000001",
  "lastModified": "2026-06-17T01:32:10.787",
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          "authentication": "NONE",
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          "version": "2.0"
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  "published": "2018-01-31T14:29:00.607",
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}



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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.
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  • 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.


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