strongSwan up to 5.9.7 Revocation Plugin resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in strongSwan up to 5.9.7. This affects an unknown function of the component Revocation Plugin. Performing a manipulation results in resource consumption. This vulnerability is reported as CVE-2022-40617. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in strongSwan up to 5.9.7 (Network Encryption Software). This affects an unknown code of the component Revocation Plugin. 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 summary by CVE is:

strongSwan before 5.9.8 allows remote attackers to cause a denial of service in the revocation plugin by sending a crafted end-entity (and intermediate CA) certificate that contains a CRL/OCSP URL that points to a server (under the attacker's control) that doesn't properly respond but (for example) just does nothing after the initial TCP handshake, or sends an excessive amount of application data.

The weakness was disclosed 10/31/2022. The advisory is shared at strongswan.org. This vulnerability is uniquely identified as CVE-2022-40617 since 09/12/2022. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 211099 (Fedora 37 : strongswan (2022-525510c815)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.9.8 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (211099). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

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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Nessus ID: 211099
Nessus Name: Fedora 37 : strongswan (2022-525510c815)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: strongSwan 5.9.8

Timelineinfo

09/12/2022 🔍
10/31/2022 +49 days 🔍
10/31/2022 +0 days 🔍
05/07/2025 +918 days 🔍

Sourcesinfo

Advisory: FEDORA-2022-525510c815
Status: Confirmed

CVE: CVE-2022-40617 (🔍)
GCVE (CVE): GCVE-0-2022-40617
GCVE (VulDB): GCVE-100-212517

Entryinfo

Created: 10/31/2022 18:03
Updated: 05/07/2025 00:12
Changes: 10/31/2022 18:03 (40), 11/26/2022 16:13 (2), 11/17/2024 07:13 (16), 05/07/2025 00:12 (12)
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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