CVE-2019-12749
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…
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
| NVDNVD · Modified | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.55% · top 54% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Weakness
Affected products
n/a
- affected n/a
References (18)
- https://www.openwall.com/lists/oss-security/2019/06/11/2 (opens in a new tab)x_refsource_MISCx_transferred
- [oss-security] 20190611 CVE-2019-12749: DBusServer DBUS_COOKIE_SHA1 authentication bypass (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- USN-4015-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- USN-4015-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- DSA-4462 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 20190613 [SECURITY] [DSA 4462-1] dbus security update (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 108751 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- [debian-lts-announce] 20190614 [SECURITY] [DLA 1818-1] dbus security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- FEDORA-2019-d5ded5326b (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- openSUSE-SU-2019:1604 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- openSUSE-SU-2019:1671 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- RHSA-2019:1726 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- openSUSE-SU-2019:1750 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- GLSA-201909-08 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- RHSA-2019:2868 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2019:2870 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2019:3707 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://security.netapp.com/advisory/ntap-20241206-0010/ (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2019-12749)Record last updated .