dbus up to 1.12.17 DBusServer File Descriptor denial of service

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in dbus up to 1.12.17. The impacted element is an unknown function of the component DBusServer. Executing a manipulation as part of File Descriptor can lead to denial of service. This vulnerability is tracked as CVE-2020-12049. The attack is restricted to local execution. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in dbus up to 1.12.17 and classified as problematic. This vulnerability affects an unknown functionality of the component DBusServer. The manipulation as part of a File Descriptor leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:

An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket could use this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients.

The weakness was disclosed 06/08/2020 (oss-sec). The advisory is available at openwall.com. This vulnerability was named CVE-2020-12049 since 04/21/2020. Local access is required to approach this attack. The successful exploitation needs a single authentication. The technical details are unknown and an exploit is not available.

Upgrading to version 1.12.18 eliminates this vulnerability.

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Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: dbus 1.12.18

Timelineinfo

04/21/2020 🔍
06/08/2020 +48 days 🔍
06/09/2020 +1 days 🔍
10/22/2020 +135 days 🔍

Sourcesinfo

Advisory: openwall.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-12049 (🔍)
GCVE (CVE): GCVE-0-2020-12049
GCVE (VulDB): GCVE-100-156262

Entryinfo

Created: 06/09/2020 06:52
Updated: 10/22/2020 18:00
Changes: 06/09/2020 06:52 (39), 06/09/2020 06:57 (17), 10/22/2020 18:00 (1)
Complete: 🔍
Cache ID: 216::103

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