Quassel up to 0.12.3 core/coreauthhandler.cpp onReadyRead null pointer dereference
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
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7.3 | $0-$5k | 0.00 |
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).
Product
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
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CVSSv3
VulDB Meta Base Score: 7.5VulDB 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: 🔍
CVSSv2
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VulDB Base Score: 🔍
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Exploiting
Class: Null pointer dereferenceCWE: CWE-476 / CWE-404
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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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 Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Quassel 0.12.4
Patch: github.com
Timeline
04/30/2016 🔍05/06/2016 🔍
05/09/2016 🔍
06/13/2016 🔍
06/13/2016 🔍
06/14/2016 🔍
08/23/2022 🔍
Sources
Advisory: FEDORA-2016-42f30d76a0Status: Not defined
Confirmation: 🔍
CVE: CVE-2016-4414 (🔍)
Entry
Created: 06/14/2016 09:12Updated: 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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