VDB-1116 · CVE-2005-0740 · BID 12250

OpenBSD up to 3.6 TCP Retransmission denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in OpenBSD up to 3.6. Impacted is an unknown function of the component TCP Retransmission Handler. The manipulation results in denial of service. This vulnerability is identified as CVE-2005-0740. The attack can only be performed from the local network. Additionally, an exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in OpenBSD up to 3.6 (Operating System). Affected is an unknown part of the component TCP Retransmission Handler. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

The TCP stack (tcp_input.c) in OpenBSD 3.5 and 3.6 allows remote attackers to cause a denial of service (system panic) via crafted values in the TCP timestamp option, which causes invalid arguments to be used when calculating the retransmit timeout.

The bug was discovered 01/11/2005. The weakness was released 01/13/2005 with OpenBSD Team (Website). The advisory is shared for download at secunia.com. This vulnerability is traded as CVE-2005-0740 since 03/13/2005. The attack needs to be done within the local network. The exploitation doesn't require any form of authentication. Technical details are unknown but a public exploit is available.

After 3 months, there has been an exploit disclosed. The exploit is shared for download at securiteam.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k.

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at ftp.openbsd.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at SecurityFocus (BID 12250†), OSVDB (12869†), Secunia (SA13819†) and SecurityTracker (ID 1012861†). 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: 6.5
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.5
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Patch: ftp.openbsd.org

Timelineinfo

01/11/2005 🔍
01/12/2005 +1 days 🔍
01/13/2005 +1 days 🔍
01/13/2005 +0 days 🔍
01/13/2005 +0 days 🔍
01/13/2005 +0 days 🔍
01/13/2005 +0 days 🔍
01/17/2005 +3 days 🔍
03/13/2005 +55 days 🔍
03/15/2005 +2 days 🔍
06/30/2019 +5220 days 🔍

Sourcesinfo

Advisory: secunia.com⛔
Researcher: http://www.openbsd.org
Organization: OpenBSD Team
Status: Confirmed

CVE: CVE-2005-0740 (🔍)
GCVE (CVE): GCVE-0-2005-0740
GCVE (VulDB): GCVE-100-1116
SecurityFocus: 12250 - OpenBSD TCP Timestamp Remote Denial Of Service Vulnerability
Secunia: 13819 - OpenBSD TCP Retransmission Timeout Calculation Denial of Service, Not Critical
OSVDB: 12869 - OpenBSD TCP Retransmission Timeout Calculation DoS
SecurityTracker: 1012861

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

Entryinfo

Created: 01/17/2005 15:08
Updated: 06/30/2019 21:57
Changes: 01/17/2005 15:08 (70), 06/30/2019 21:57 (10)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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