Dinko Korunic Hybserv2 1.9.2/1.9.3/1.9.4 mystring.c input validation

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

Summaryinfo

A vulnerability marked as problematic has been reported in Dinko Korunic Hybserv2 1.9.2/1.9.3/1.9.4. This affects an unknown function of the file mystring.c. Performing a manipulation results in input validation. This vulnerability is identified as CVE-2010-0303. Additionally, an exploit exists.

Detailsinfo

A vulnerability classified as problematic has been found in Dinko Korunic Hybserv2 1.9.2/1.9.3/1.9.4. This affects an unknown code of the file mystring.c. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

mystring.c in hybserv in IRCD-Hybrid (aka Hybrid2 IRC Services) 1.9.2 through 1.9.4 allows remote attackers to cause a denial of service (daemon crash) via a ":help \t" private message to the MemoServ service.

The weakness was released 02/04/2010 by Julien Cristau (Website). The advisory is shared at security.debian.org. This vulnerability is uniquely identified as CVE-2010-0303 since 01/12/2010. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 44846 (Debian DSA-1982-1 : hybserv - denial of service), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175061 (Debian Security Update for Hybserv (DSA-1982)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (55992), Exploit-DB (33581), Tenable (44846), SecurityFocus (BID 38006†) and Secunia (SA38350†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

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: Input validation
CWE: CWE-20
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: 44846
Nessus Name: Debian DSA-1982-1 : hybserv - denial of service
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 66804
OpenVAS Name: Debian Security Advisory DSA 1982-1 (hybserv)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/12/2010 🔍
01/29/2010 +17 days 🔍
02/01/2010 +3 days 🔍
02/04/2010 +3 days 🔍
02/04/2010 +0 days 🔍
02/04/2010 +0 days 🔍
02/15/2010 +11 days 🔍
02/24/2010 +9 days 🔍
03/18/2015 +1848 days 🔍
04/30/2026 +4060 days 🔍

Sourcesinfo

Advisory: security.debian.org
Researcher: Julien Cristau
Status: Not defined
Confirmation: 🔍

CVE: CVE-2010-0303 (🔍)
GCVE (CVE): GCVE-0-2010-0303
GCVE (VulDB): GCVE-100-51741

OVAL: 🔍

X-Force: 55992
SecurityFocus: 38006 - Hybserv2 ':help' Command Denial Of Service Vulnerability
Secunia: 38350 - Debian update for hybserv, Moderately Critical
Vulnerability Center: 24840 - Hybserv2 Remote DoS Vulnerability via a \x27:help \\t\x27 Private Message to the MemoServ Service, Medium

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

Entryinfo

Created: 03/18/2015 15:15
Updated: 04/30/2026 00:47
Changes: 03/18/2015 15:15 (60), 02/21/2017 08:04 (14), 09/01/2021 04:35 (3), 10/15/2024 14:12 (23), 02/01/2025 21:35 (4), 04/30/2026 00:47 (2)
Complete: 🔍
Cache ID: 216::103

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