VDB-87911 · CVE-2016-4414 · OpenVAS 54742

Quassel up to 0.12.3 core/coreauthhandler.cpp onReadyRead null pointer dereference

CVSS Meta Temp Score
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7.3$0-$5k0.00

A vulnerability was found in Quassel up to 0.12.3. It has been rated as critical. This issue affects the function onReadyRead of the file core/coreauthhandler.cpp. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. The summary by CVE is:

The onReadyRead function in core/coreauthhandler.cpp in Quassel before 0.12.4 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via invalid handshake data.

The weakness was released 06/13/2016 (Website). It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2016-4414 since 04/30/2016. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 90953 (Fedora 23 : quassel-0.12.4-1.fc23 (2016-42f30d76a0)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l.

Upgrading to version 0.12.4 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (90953).

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

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Nessus ID: 90953
Nessus Name: Fedora 23 : quassel-0.12.4-1.fc23 (2016-42f30d76a0)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 54742
OpenVAS Name: Mageia Linux Local Check: mgasa-2016-0166
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Quassel 0.12.4
Patch: github.com

Timelineinfo

04/30/2016 🔍
05/06/2016 +6 days 🔍
05/09/2016 +3 days 🔍
06/13/2016 +35 days 🔍
06/13/2016 +0 days 🔍
06/14/2016 +1 days 🔍
08/23/2022 +2261 days 🔍

Sourcesinfo

Advisory: FEDORA-2016-42f30d76a0
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-4414 (🔍)

Entryinfo

Created: 06/14/2016 09:12
Updated: 08/23/2022 15:05
Changes: 06/14/2016 09:12 (58), 01/19/2019 14:44 (12), 08/23/2022 15:02 (5), 08/23/2022 15:05 (1)
Complete: 🔍

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