irssi 0.8.13 event_wallops numeric error

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability was found in irssi 0.8.13. It has been declared as problematic. Impacted is the function event_wallops. Executing a manipulation can lead to numeric error. This vulnerability is registered as CVE-2009-1959. Furthermore, an exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in irssi 0.8.13 (Messaging Software) and classified as problematic. This vulnerability affects the function event_wallops. The manipulation with an unknown input leads to a numeric error vulnerability. The CWE definition for the vulnerability is CWE-189. As an impact it is known to affect availability. CVE summarizes:

Off-by-one error in the event_wallops function in fe-common/irc/fe-events.c in irssi 0.8.13 allows remote IRC servers to cause a denial of service (crash) via an empty command, which triggers a one-byte buffer under-read and a one-byte buffer underflow.

The bug was discovered 05/29/2009. The weakness was published 06/07/2009 by nemo (Website). The advisory is shared for download at redhat.com. This vulnerability was named CVE-2009-1959 since 06/06/2009. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 9 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 39433 (openSUSE 10 Security Update : irssi (irssi-6304)), 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 116545 (Fedora Update for irssi (FEDORA-2009-7012)).

Upgrading 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 X-Force (51184), Exploit-DB (33041), Tenable (39433), SecurityFocus (BID 35399†) and OSVDB (54977†). Similar entries are available at VDB-48855, VDB-48432, VDB-47626 and VDB-47065. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 39433
Nessus Name: openSUSE 10 Security Update : irssi (irssi-6304)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 64740
OpenVAS Name: Fedora Core 10 FEDORA-2009-7004 (irssi)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

05/15/2009 🔍
05/15/2009 +0 days 🔍
05/29/2009 +14 days 🔍
06/06/2009 +8 days 🔍
06/07/2009 +1 days 🔍
06/07/2009 +0 days 🔍
06/15/2009 +8 days 🔍
06/16/2009 +1 days 🔍
06/17/2009 +1 days 🔍
06/23/2009 +6 days 🔍
03/17/2015 +2093 days 🔍
04/07/2025 +3674 days 🔍

Sourcesinfo

Advisory: redhat.com
Researcher: nemo
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2009-1959 (🔍)
GCVE (CVE): GCVE-0-2009-1959
GCVE (VulDB): GCVE-100-48460

OVAL: 🔍

X-Force: 51184
SecurityFocus: 35399 - Irssi 'WALLOPS' Message Off By One Heap Memory Corruption Vulnerability
Secunia: 35685
OSVDB: 54977 - Irssi - 'WALLOPS' Message Off By One Heap Memory Corruption Issue
SecurityTracker: 1022410
Vulnerability Center: 22643 - Irssi 0.8.13 Event_Wallops Off-by-One Error Remote DoS Vulnerability, Medium
Vupen: ADV-2009-1596

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/17/2015 23:38
Updated: 04/07/2025 10:04
Changes: 03/17/2015 23:38 (74), 09/06/2019 16:24 (13), 12/04/2024 09:42 (20), 04/07/2025 10:04 (2)
Complete: 🔍
Cache ID: 216:64B:103

Once again VulDB remains the best source for vulnerability data.

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