Cisco PIX 6.3/7.0 denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in Cisco PIX 6.3/7.0 and classified as problematic. This affects an unknown part. Performing a manipulation results in denial of service. This vulnerability is identified as CVE-2005-3774. Additionally, an exploit exists.

Detailsinfo

A vulnerability was found in Cisco PIX 6.3/7.0 (Firewall Software). It has been classified as problematic. This affects an unknown part. 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. The summary by CVE is:

Cisco PIX 6.3 and 7.0 allows remote attackers to cause a denial of service (blocked new connections) via spoofed TCP packets that cause the PIX to create embryonic connections that that would not produce a valid connection with the end system, including (1) SYN packets with invalid checksums, which do not result in a RST; or, from an external interface, (2) one byte of "meaningless data," or (3) a TTL that is one less than needed to reach the internal destination.

The bug was discovered 03/07/2006. The weakness was released 11/22/2005 by Konstantin V. Gavrilenko as confirmed advisory (CERT.org). It is possible to read the advisory at kb.cert.org. This vulnerability is uniquely identified as CVE-2005-3774 since 11/22/2005. 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 are unknown but a public exploit is available.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The commercial vulnerability scanner Qualys is able to test this issue with plugin 34040 (Cisco PIX Invalid TCP Checksum Denial of Service Vulnerability).

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 (23169), Exploit-DB (1338), SecurityFocus (BID 15525†), OSVDB (21053†) and Secunia (SA17670†). Entry connected to this vulnerability is available at VDB-83640. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.3
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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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: 🔍

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Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

Timelineinfo

11/22/2005 🔍
11/22/2005 +0 days 🔍
11/22/2005 +0 days 🔍
11/22/2005 +0 days 🔍
11/23/2005 +0 days 🔍
11/23/2005 +0 days 🔍
11/23/2005 +0 days 🔍
11/23/2005 +0 days 🔍
12/04/2005 +10 days 🔍
03/07/2006 +93 days 🔍
03/11/2015 +3291 days 🔍
06/29/2025 +3762 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: kb.cert.org
Researcher: Konstantin V. Gavrilenko
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2005-3774 (🔍)
GCVE (CVE): GCVE-0-2005-3774
GCVE (VulDB): GCVE-100-27051
CERT: 🔍
X-Force: 23169
SecurityFocus: 15525 - Cisco PIX TCP SYN Packet Denial Of Service Vulnerability
Secunia: 17670 - Cisco PIX Spoofed TCP SYN Packets Denial of Service, Not Critical
OSVDB: 21053 - Cisco PIX Crafted TCP SYN Packet Saturation DoS
SecurityTracker: 1015256
Vulnerability Center: 9831 - [cisco-sr-20060307-pix] Cisco PIX DoS via Spoofed TCP SYN Packets with, Medium
Vupen: ADV-2005-2546

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

Entryinfo

Created: 03/11/2015 23:39
Updated: 06/29/2025 00:05
Changes: 03/11/2015 23:39 (78), 06/12/2019 09:34 (1), 12/03/2024 23:36 (16), 01/19/2025 06:14 (1), 06/29/2025 00:05 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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