irssi up to 1.0.5 Escape Code format string

HistoryDiffrelatejsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in irssi up to 1.0.5. Affected by this vulnerability is an unknown functionality of the component Escape Code Handler. This manipulation causes format string. This vulnerability appears as CVE-2018-5205. The attack may be initiated remotely. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in irssi up to 1.0.5 (Messaging Software). It has been declared as critical. Affected by this vulnerability is some unknown functionality of the component Escape Code Handler. The manipulation with an unknown input leads to a format string vulnerability. The CWE definition for the vulnerability is CWE-134. The product uses a function that accepts a format string as an argument, but the format string originates from an external source. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

When using incomplete escape codes, Irssi before 1.0.6 may access data beyond the end of the string.

The bug was discovered 01/03/2018. The weakness was presented 01/06/2018 (Website). It is possible to read the advisory at irssi.org. This vulnerability is known as CVE-2018-5205 since 01/03/2018. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not 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 197016 (Ubuntu Security Notification for Irssi Vulnerabilities (USN-3527-1)).

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). See VDB-111464, VDB-111465 and VDB-111466 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Messaging Software

Name

irssi

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Format string
CWE: CWE-134 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

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 🔍
01/20/2023 +1836 days 🔍

Sourcesinfo

Advisory: USN-3527-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-5205 (🔍)
GCVE (CVE): GCVE-0-2018-5205
GCVE (VulDB): GCVE-100-111463

OVAL: 🔍
See also: 🔍

Entryinfo

Created: 01/08/2018 15:19
Updated: 01/20/2023 10:48
Changes: 01/08/2018 15:19 (74), 12/20/2019 10:32 (4), 01/20/2023 10:48 (4)
Complete: 🔍
Cache ID: 216::103