irssi up to 1.0.5 Channel Topic null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in irssi up to 1.0.5. Affected by this issue is some unknown functionality of the component Channel Topic Handler. Such manipulation leads to null pointer dereference. This vulnerability is traded as CVE-2018-5206. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in irssi up to 1.0.5 (Messaging Software). It has been rated as problematic. Affected by this issue is an unknown part of the component Channel Topic Handler. 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. CVE summarizes:

When the channel topic is set without specifying a sender, Irssi before 1.0.6 may dereference a NULL pointer.

The bug was discovered 01/03/2018. The weakness was shared 01/06/2018 (Website). The advisory is shared for download at irssi.org. This vulnerability is handled as CVE-2018-5206 since 01/03/2018. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 105716 (openSUSE Security Update : irssi (openSUSE-2018-18)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170670 (OpenSUSE Security Update for irssi (openSUSE-SU-2018:0058-1)).

Upgrading to version 1.0.6 eliminates this vulnerability. A possible mitigation has been published 3 days after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (105716). The entries VDB-111463, VDB-111465 and VDB-111466 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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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: 105716
Nessus Name: openSUSE Security Update : irssi (openSUSE-2018-18)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 100396
OpenVAS Name: Fedora Update for irssi FEDORA-2018-c4e4935e01
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: irssi 1.0.6

Timelineinfo

01/03/2018 🔍
01/03/2018 +0 days 🔍
01/06/2018 +3 days 🔍
01/06/2018 +0 days 🔍
01/08/2018 +2 days 🔍
01/09/2018 +1 days 🔍
01/10/2018 +1 days 🔍
12/20/2019 +709 days 🔍

Sourcesinfo

Advisory: irssi.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-5206 (🔍)
GCVE (CVE): GCVE-0-2018-5206
GCVE (VulDB): GCVE-100-111464

OVAL: 🔍
See also: 🔍

Entryinfo

Created: 01/08/2018 15:19
Updated: 12/20/2019 10:39
Changes: 01/08/2018 15:19 (74), 12/20/2019 10:39 (4)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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