Cisco IP Phone 7940/7960 SIP input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco IP Phone 7940/7960 and classified as problematic. Affected is an unknown function of the component SIP Handler. Such manipulation leads to input validation. This vulnerability is documented as CVE-2007-4459. Additionally, an exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco IP Phone 7940/7960 (IP Phone Software). It has been rated as critical. Affected by this issue is an unknown code of the component SIP Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. CVE summarizes:

Cisco IP Phone 7940 and 7960 with P0S3-08-6-00 firmware, and other SIP firmware before 8.7(0), allows remote attackers to cause a denial of service (device reboot) via (1) a certain sequence of 10 invalid SIP INVITE and OPTIONS messages; or (2) a certain invalid SIP INVITE message that contains a remote tag, followed by a certain set of two related SIP OPTIONS messages.

The bug was discovered 04/04/2007. The weakness was released 08/21/2007 by Humberto J. Abdelnur, Radu State and Olivier Festor with INRIA Lorraine (Website). The advisory is available at cisco.com. This vulnerability is handled as CVE-2007-4459 since 08/21/2007. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed in Perl and been published before and not just after the advisory. The exploit is available at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 139 days. During that time the estimated underground price was around $5k-$25k.

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

The vulnerability is also documented in the databases at X-Force (36125), Exploit-DB (4298), SecurityFocus (BID 25378†), OSVDB (36695†) and Secunia (SA26547†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: cisco.com
Fortigate IPS: 🔍

Timelineinfo

04/04/2007 🔍
08/20/2007 +138 days 🔍
08/20/2007 +0 days 🔍
08/21/2007 +1 days 🔍
08/21/2007 +0 days 🔍
08/21/2007 +0 days 🔍
08/21/2007 +0 days 🔍
08/21/2007 +0 days 🔍
08/21/2007 +0 days 🔍
08/21/2007 +0 days 🔍
08/26/2007 +4 days 🔍
09/03/2007 +8 days 🔍
11/24/2024 +6292 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Researcher: Humberto J. Abdelnur, Radu State, Olivier Festor
Organization: INRIA Lorraine
Status: Confirmed

CVE: CVE-2007-4459 (🔍)
GCVE (CVE): GCVE-0-2007-4459
GCVE (VulDB): GCVE-100-3266
X-Force: 36125 - Cisco IP Phone 7940 SIP message sequence denial of service, Medium Risk
SecurityFocus: 25378 - Cisco 7940/7960 Phones SIP Message Handling Remote Denial of Service Vulnerabilities
Secunia: 26547
OSVDB: 36695 - Cisco IP Phone 79xx Crafted SIP Message Sequence Remote DoS
SecurityTracker: 1018591
Vulnerability Center: 15920 - [cisco-sr-20070821-sip] Cisco IP Phone 7940 Vulnerability Allows Remote Attacker to Cause DoS, High
Vupen: ADV-2007-2928

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

Entryinfo

Created: 09/03/2007 18:13
Updated: 11/24/2024 15:27
Changes: 09/03/2007 18:13 (89), 07/24/2019 10:15 (1), 11/24/2024 15:27 (17)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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