Cisco Web Security Appliance HTTPS Connection memory leak

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Cisco Web Security Appliance. Affected is an unknown function of the component HTTPS Connection Handler. The manipulation leads to memory leak. This vulnerability is documented as CVE-2021-34698. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco Web Security Appliance (Anti-Malware Software) (affected version not known). It has been rated as problematic. This issue affects some unknown functionality of the component HTTPS Connection Handler. The manipulation with an unknown input leads to a memory leak vulnerability. Using CWE to declare the problem leads to CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. Impacted is availability.

The weakness was released 10/07/2021 as cisco-sa-wsa-dos-fmHdKswk. The advisory is shared at tools.cisco.com. The identification of this vulnerability is CVE-2021-34698 since 06/15/2021. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

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

CNA Base Score: 8.6
CNA Vector (Cisco Systems, Inc.): 🔍

CVSSv2info

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

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
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: 🔍

Timelineinfo

06/15/2021 🔍
10/07/2021 +114 days 🔍
10/07/2021 +0 days 🔍
10/09/2021 +2 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-wsa-dos-fmHdKswk
Status: Confirmed

CVE: CVE-2021-34698 (🔍)
GCVE (CVE): GCVE-0-2021-34698
GCVE (VulDB): GCVE-100-183941

Entryinfo

Created: 10/07/2021 07:54
Updated: 10/09/2021 18:32
Changes: 10/07/2021 07:54 (49), 10/09/2021 18:32 (1)
Complete: 🔍
Cache ID: 216::103

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