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 remote Fedora 37 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2022-525510c815 advisory.

    Resolves CVE-2022-40617

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

An update of the strongswan package has been released.

The remote host is affected by the vulnerability described in GLSA-202405-08 (strongSwan: Multiple Vulnerabilities)

  - The in-memory certificate cache in strongSwan before 5.9.4 has a remote integer overflow upon receiving     many requests with different certificates to fill the cache and later trigger the replacement of cache     entries. The code attempts to select a less-often-used cache entry by means of a random number generator,     but this is not done correctly. Remote code execution might be a slight possibility. (CVE-2021-41991)

  - In strongSwan before 5.9.5, a malicious responder can send an EAP-Success message too early without     actually authenticating the client and (in the case of EAP methods with mutual authentication and EAP-only     authentication for IKEv2) even without server authentication. (CVE-2021-45079)

  - 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. (CVE-2022-40617)

  - strongSwan 5.9.8 and 5.9.9 potentially allows remote code execution because it uses a variable named     public for two different purposes within the same function. There is initially incorrect access control,     later followed by an expired pointer dereference. One attack vector is sending an untrusted client     certificate during EAP-TLS. A server is affected only if it loads plugins that implement TLS-based EAP     methods (EAP-TLS, EAP-TTLS, EAP-PEAP, or EAP-TNC). This is fixed in 5.9.10. (CVE-2023-26463)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of strongswan installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2022-40617 advisory.

  - 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. (CVE-2022-40617)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 36 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2022-11bf2b2597 advisory.

    Resolves CVE-2022-40617

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2022:4197-1 advisory.

  - 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. (CVE-2022-40617)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2022:4185-1 advisory.

  - 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. (CVE-2022-40617)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2022:4159-1 advisory.

  - 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. (CVE-2022-40617)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 10 host has packages installed that are affected by a vulnerability as referenced in the dla-3143 advisory.

  - Lahav Schlesinger reported a bug related to online           certificate revocation checking that can lead     to a           denial-of-service attack . (CVE-2022-40617)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 0ae56f3e-488c-11ed-bb31-b42e99a1b9c3 advisory.

  - Lahav Schlesinger reported a bug related to online           certificate revocation checking that can lead     to a           denial-of-service attack . (CVE-2022-40617)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dsa-5249 advisory.

  - 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. (CVE-2022-40617)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 ESM host has packages installed that are affected by a vulnerability as referenced in the USN-5651-2 advisory.

    USN-5651-1 fixed a vulnerability in strongSwan. This update provides the corresponding update for Ubuntu     14.04 ESM and Ubuntu 16.04 ESM.



Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-5651-1 advisory.

    Lahav Schlesinger discovered that strongSwan incorrectly handled certain OCSP URIs and and CRL     distribution points (CDP) in certificates. A remote attacker could possibly use this issue to initiate     IKE_SAs and send crafted certificates that contain URIs pointing to servers under their control, which can     lead to a denial-of-service attack.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
211099	Fedora 37 : strongswan (2022-525510c815)	Nessus	Fedora Local Security Checks	high
203854	Photon OS 3.0: Strongswan PHSA-2022-3.0-0485	Nessus	PhotonOS Local Security Checks	high
203430	Photon OS 4.0: Strongswan PHSA-2022-4.0-0279	Nessus	PhotonOS Local Security Checks	high
194978	GLSA-202405-08 : strongSwan: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	critical
172777	CBL Mariner 2.0 Security Update: strongswan (CVE-2022-40617)	Nessus	MarinerOS Local Security Checks	high
169057	Fedora 36 : strongswan (2022-11bf2b2597)	Nessus	Fedora Local Security Checks	high
168159	SUSE SLED15 / SLES15 Security Update : strongswan (SUSE-SU-2022:4197-1)	Nessus	SuSE Local Security Checks	high
168141	SUSE SLES12 Security Update : strongswan (SUSE-SU-2022:4185-1)	Nessus	SuSE Local Security Checks	high
168140	SUSE SLED15 / SLES15 Security Update : strongswan (SUSE-SU-2022:4159-1)	Nessus	SuSE Local Security Checks	high
165995	Debian DLA-3143-1 : strongswan - LTS security update	Nessus	Debian Local Security Checks	high
165923	FreeBSD : strongswan -- DOS attack vulnerability (0ae56f3e-488c-11ed-bb31-b42e99a1b9c3)	Nessus	FreeBSD Local Security Checks	high
165746	Debian DSA-5249-1 : strongswan - security update	Nessus	Debian Local Security Checks	high
165669	Ubuntu 16.04 ESM : strongSwan vulnerability (USN-5651-2)	Nessus	Ubuntu Local Security Checks	high
165668	Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS : strongSwan vulnerability (USN-5651-1)	Nessus	Ubuntu Local Security Checks	high

Detections

Analytics

CVE-2022-40617

high

Tenable Plugins

high

high

high

critical

high

high

high

high

high

high

high

high

high

high