VDB-98256 · CVE-2017-3870 · BID 96907

Cisco Web Security Appliance 8.5.3-069/9.1.1-074/9.1.2-010 URL Filter memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco Web Security Appliance 8.5.3-069/9.1.1-074/9.1.2-010 and classified as critical. This issue affects some unknown processing of the component URL Filter. The manipulation results in memory corruption. This vulnerability is identified as CVE-2017-3870. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Cisco Web Security Appliance 8.5.3-069/9.1.1-074/9.1.2-010 (Anti-Malware Software). Affected is an unknown code of the component URL Filter. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A vulnerability in the URL filtering feature of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to bypass a configured URL filter rule. Affected Products: This vulnerability affects all releases prior to the first fixed release of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA), both virtual and hardware appliances, that are configured with URL filters for email scanning. More Information: CSCvc69700. Known Affected Releases: 8.5.3-069 9.1.1-074 9.1.2-010.

The bug was discovered 03/15/2017. The weakness was released 03/17/2017 with Cisco as cisco-sa-20170315-wsa as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability is traded as CVE-2017-3870 since 12/21/2016. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

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 $25k-$100k.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 96907†) and SecurityTracker (ID 1038043†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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OpenVAS ID: 803167
OpenVAS Name: Cisco Web Security Appliance URL Filtering Bypass Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/21/2016 🔍
03/15/2017 +84 days 🔍
03/15/2017 +0 days 🔍
03/17/2017 +2 days 🔍
03/17/2017 +0 days 🔍
03/18/2017 +1 days 🔍
12/25/2024 +2839 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20170315-wsa
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-3870 (🔍)
GCVE (CVE): GCVE-0-2017-3870
GCVE (VulDB): GCVE-100-98256
SecurityFocus: 96907 - Cisco AsyncOS CVE-2017-3870 Remote Security Bypass Vulnerability
OSVDB: - CVE-2017-3870 - Cisco - Web Security Appliance - Security Bypass Issue
SecurityTracker: 1038043

Entryinfo

Created: 03/18/2017 02:58
Updated: 12/25/2024 20:07
Changes: 03/18/2017 02:58 (66), 09/09/2020 21:14 (6), 12/25/2024 20:07 (18)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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