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

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

Summaryinfo

A vulnerability was found in Quassel up to 0.12.3. It has been classified as problematic. Affected is the function onReadyRead of the file core/coreauthhandler.cpp. The manipulation leads to null pointer dereference. This vulnerability is documented as CVE-2016-4414. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168853 (OpenSuSE Security Update for quassel (openSUSE-SU-2016:1314-1)).

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). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

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

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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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: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

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 🔍
10/01/2024 +3031 days 🔍

Sourcesinfo

Product: github.com

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

CVE: CVE-2016-4414 (🔍)
GCVE (CVE): GCVE-0-2016-4414
GCVE (VulDB): GCVE-100-87911

Entryinfo

Created: 06/14/2016 09:12
Updated: 10/01/2024 23:41
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), 10/01/2024 23:41 (16)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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