VDB-103389 · CVE-2017-6727 · BID 99483

Cisco Wide Area Application Services 6.2(3a) SMB input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Cisco Wide Area Application Services 6.2(3a). Affected by this vulnerability is an unknown functionality of the component SMB Handler. Performing a manipulation results in input validation. This vulnerability is cataloged as CVE-2017-6727. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco Wide Area Application Services 6.2(3a). It has been classified as problematic. This affects some unknown processing of the component SMB Handler. 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:

A vulnerability in the Server Message Block (SMB) protocol of Cisco Wide Area Application Services (WAAS) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device due to a process restarting unexpectedly and creating Core Dump files. More Information: CSCvc63035. Known Affected Releases: 6.2(3a). Known Fixed Releases: 6.3(0.167) 6.2(3c)5 6.2(3.22).

The bug was discovered 07/05/2017. The weakness was shared 07/10/2017 as cisco-sa-20170705-waas as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is uniquely identified as CVE-2017-6727 since 03/09/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $5k-$25k.

Upgrading to version 6.2(3.22), 6.2(3c)5 or 6.3(0.167) eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 99483†). The entry VDB-103392 is related to this item. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

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: 🔍
Status: Not defined

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: 🔍

Upgrade: Wide Area Application Services 6.2(3.22)/6.2(3c)5/6.3(0.167)

Timelineinfo

03/09/2017 🔍
07/05/2017 +118 days 🔍
07/05/2017 +0 days 🔍
07/10/2017 +5 days 🔍
07/10/2017 +0 days 🔍
07/12/2017 +2 days 🔍
12/31/2020 +1268 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20170705-waas
Researcher: Bharat Putta
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-6727 (🔍)
GCVE (CVE): GCVE-0-2017-6727
GCVE (VulDB): GCVE-100-103389
SecurityFocus: 99483 - Cisco Wide Area Application Services CVE-2017-6727 Remote Denial of Service Vulnerability
SecurityTracker: 1038824

See also: 🔍

Entryinfo

Created: 07/12/2017 10:13
Updated: 12/31/2020 14:06
Changes: 07/12/2017 10:13 (63), 10/24/2019 16:47 (4), 12/31/2020 14:03 (3), 12/31/2020 14:06 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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