CVE-2019-12749 (GCVE-0-2019-12749)

Vulnerability from cvelistv5 – Published: 2019-06-11 16:11 – Updated: 2026-02-13 19:57
VLAI
Summary
dbus before 1.10.28, 1.12.x before 1.12.16, and 1.13.x before 1.13.12, as used in DBusServer in Canonical Upstart in Ubuntu 14.04 (and in some, less common, uses of dbus-daemon), allows cookie spoofing because of symlink mishandling in the reference implementation of DBUS_COOKIE_SHA1 in the libdbus library. (This only affects the DBUS_COOKIE_SHA1 authentication mechanism.) A malicious client with write access to its own home directory could manipulate a ~/.dbus-keyrings symlink to cause a DBusServer with a different uid to read and write in unintended locations. In the worst case, this could result in the DBusServer reusing a cookie that is known to the malicious client, and treating that cookie as evidence that a subsequent client connection came from an attacker-chosen uid, allowing authentication bypass.
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE
  • n/a
Assigner
References
URL Tags
https://www.openwall.com/lists/oss-security/2019/… x_refsource_MISC
http://www.openwall.com/lists/oss-security/2019/06/11/2 mailing-listx_refsource_MLIST
https://usn.ubuntu.com/4015-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4015-2/ vendor-advisoryx_refsource_UBUNTU
https://www.debian.org/security/2019/dsa-4462 vendor-advisoryx_refsource_DEBIAN
https://seclists.org/bugtraq/2019/Jun/16 mailing-listx_refsource_BUGTRAQ
http://www.securityfocus.com/bid/108751 vdb-entryx_refsource_BID
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://access.redhat.com/errata/RHSA-2019:1726 vendor-advisoryx_refsource_REDHAT
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://security.gentoo.org/glsa/201909-08 vendor-advisoryx_refsource_GENTOO
https://access.redhat.com/errata/RHSA-2019:2868 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:2870 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:3707 vendor-advisoryx_refsource_REDHAT
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      "cveMetadata": "{\"cveId\": \"CVE-2019-12749\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-02-13T19:57:55.649Z\", \"dateReserved\": \"2019-06-06T00:00:00.000Z\", \"assignerOrgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"datePublished\": \"2019-06-11T16:11:45.000Z\", \"assignerShortName\": \"mitre\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.