F5 BIG-IP up to 15.1.2/16.0.1.2/16.1.0 Traffic Management Microkernel RESOLVER::summarize resource consumption

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 was found in F5 BIG-IP up to 15.1.2/16.0.1.2/16.1.0. It has been classified as problematic. This affects the function RESOLVER::summarize of the component Traffic Management Microkernel. Performing a manipulation results in resource consumption. This vulnerability is reported as CVE-2021-23049. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic has been found in F5 BIG-IP up to 15.1.2/16.0.1.2/16.1.0 (Firewall Software). This affects the function RESOLVER::summarize of the component Traffic Management Microkernel. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability.

The weakness was disclosed 08/26/2021 as K65397301. The advisory is shared at support.f5.com. This vulnerability is uniquely identified as CVE-2021-23049. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 15.1.3, 16.0.1.2 or 16.1.0 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

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

CVSSv2info

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

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / 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: 🔍

Upgrade: BIG-IP 15.1.3/16.0.1.2/16.1.0

Timelineinfo

01/06/2021 🔍
08/26/2021 +231 days 🔍
08/26/2021 +0 days 🔍
09/01/2021 +6 days 🔍

Sourcesinfo

Vendor: f5.com

Advisory: K65397301
Status: Confirmed

CVE: CVE-2021-23049 (🔍)
GCVE (CVE): GCVE-0-2021-23049
GCVE (VulDB): GCVE-100-181557

Entryinfo

Created: 08/26/2021 17:10
Updated: 09/01/2021 08:16
Changes: 08/26/2021 17:10 (41), 09/01/2021 08:16 (1)
Complete: 🔍
Cache ID: 216::103

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