irssi up to 1.0.4 DCC CTCP Message null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in irssi up to 1.0.4 and classified as problematic. Impacted is an unknown function of the component DCC CTCP Message Handler. Executing a manipulation can lead to null pointer dereference. This vulnerability is tracked as CVE-2017-15721. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in irssi up to 1.0.4 (Messaging Software). It has been declared as problematic. This vulnerability affects an unknown code of the component DCC CTCP Message Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. CVE summarizes:

In Irssi before 1.0.5, certain incorrectly formatted DCC CTCP messages could cause a NULL pointer dereference. This is a separate, but similar, issue relative to CVE-2017-9468.

The bug was discovered 10/22/2017. The weakness was disclosed 10/22/2017 (oss-sec). The advisory is available at openwall.com. This vulnerability was named CVE-2017-15721 since 10/21/2017. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 104062 (FreeBSD : irssi -- multiple vulnerabilities (85e2c7eb-b74b-11e7-8546-5cf3fcfdd1f1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196957 (Ubuntu Security Notification for Irssi Vulnerabilities (USN-3465-1)).

Upgrading to version 1.0.5 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (104062). The entries VDB-108320, VDB-108321, VDB-108323 and VDB-108324 are pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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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: 104062
Nessus Name: FreeBSD : irssi -- multiple vulnerabilities (85e2c7eb-b74b-11e7-8546-5cf3fcfdd1f1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53380
OpenVAS Name: Debian Security Advisory DSA 4016-1 (irssi - security update)
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 1.0.5

Timelineinfo

10/21/2017 🔍
10/22/2017 +1 days 🔍
10/22/2017 +0 days 🔍
10/22/2017 +0 days 🔍
10/22/2017 +0 days 🔍
10/23/2017 +1 days 🔍
10/23/2017 +0 days 🔍
01/04/2023 +1899 days 🔍

Sourcesinfo

Advisory: DLA 1217-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-15721 (🔍)
GCVE (CVE): GCVE-0-2017-15721
GCVE (VulDB): GCVE-100-108322

OVAL: 🔍
See also: 🔍

Entryinfo

Created: 10/23/2017 09:07
Updated: 01/04/2023 10:07
Changes: 10/23/2017 09:07 (72), 11/28/2019 15:19 (3), 01/04/2023 10:07 (4)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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