irssi up to 1.0.2 DCC Message nick/host null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in irssi up to 1.0.2. The impacted element is an unknown function of the component DCC Message Handler. Such manipulation of the argument nick/host leads to null pointer dereference. This vulnerability is uniquely identified as CVE-2017-9468. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in irssi up to 1.0.2 (Messaging Software). It has been rated as problematic. Affected by this issue is an unknown function of the component DCC Message Handler. The manipulation of the argument nick/host 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:

In Irssi before 1.0.3, when receiving a DCC message without source nick/host, it attempts to dereference a NULL pointer. Thus, remote IRC servers can cause a crash.

The bug was discovered 06/06/2017. The weakness was disclosed 06/07/2017 (oss-sec). The advisory is shared for download at openwall.com. This vulnerability is handled as CVE-2017-9468 since 06/06/2017. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 100853 (Debian DSA-3885-1 : irssi - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276756 (Fedora Security Update for irssi (FEDORA-2017-75c571778e)).

Upgrading to version 1.0.3 eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (100853) and SecurityFocus (BID 99015†). The entry VDB-102033 is pretty similar. 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: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
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: 100853
Nessus Name: Debian DSA-3885-1 : irssi - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703885
OpenVAS Name: Debian Security Advisory DSA 3885-1 (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 1.0.3

Timelineinfo

06/06/2017 🔍
06/06/2017 +0 days 🔍
06/06/2017 +0 days 🔍
06/07/2017 +1 days 🔍
06/07/2017 +0 days 🔍
06/07/2017 +0 days 🔍
06/18/2017 +11 days 🔍
06/19/2017 +1 days 🔍
12/26/2020 +1286 days 🔍

Sourcesinfo

Advisory: openwall.com
Researcher: Joseph Bisch
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-9468 (🔍)
GCVE (CVE): GCVE-0-2017-9468
GCVE (VulDB): GCVE-100-102032

OVAL: 🔍

SecurityFocus: 99015 - Irssi CVE-2017-9468 Denial of Service Vulnerability
SecurityTracker: 1038621

See also: 🔍

Entryinfo

Created: 06/07/2017 10:48
Updated: 12/26/2020 10:29
Changes: 06/07/2017 10:48 (77), 10/14/2019 09:50 (5), 12/26/2020 10:25 (2), 12/26/2020 10:29 (1)
Complete: 🔍
Cache ID: 216::103

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