strongSwan before 5.9.12 has a buffer overflow and possible unauthenticated remote code execution via a DH public value that exceeds the internal buffer in charon-tkm's DH proxy. The earliest affected version is 5.3.0. An attack can occur via a crafted IKE_SA_INIT message.

The remote Fedora 41 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2024-dc9e695c3a advisory.

    Automatic update for strongswan-5.9.14-1.fc41.

    ##### **Changelog**

    ```
    * Fri May 31 2024 Paul Wouters <paul.wouters@aiven.io> - 5.9.14-1
    - Resolves: rhbz#2254560 CVE-2023-41913 buffer overflow and possible RCE
    - Resolved: rhbz#2250666 Update to 5.9.14 (IKEv2 OCSP extensions, seqno/regno overflow handling
    - Update to 5.9.13 (OCSP nonce set regression configuration option charon.ocsp_nonce_len)
    - Update to 5.9.12 (CVE-2023-41913 fix, various IKEv2 fixes)

    ```

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 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-2023-41913 advisory.

  - strongSwan before 5.9.12 has a buffer overflow and possible unauthenticated remote code execution via a DH     public value that exceeds the internal buffer in charon-tkm's DH proxy. The earliest affected version is     5.3.0. An attack can occur via a crafted IKE_SA_INIT message. (CVE-2023-41913)

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 40 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2024-6712c699fc advisory.

    Fixes CVE-2023-41913 buffer overflow and possible RCE, various IKEv2 improvements

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 Ubuntu 16.04 ESM / 18.04 ESM host has packages installed that are affected by a vulnerability as referenced in the USN-6488-2 advisory.

    USN-6488-1 fixed a vulnerability in strongSwan. This update provides the corresponding updates for Ubuntu     16.04 LTS and Ubuntu 18.04 LTS.



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 version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the bbda3d16-968e-11ee-b780-b42e991fc52e advisory.

  - strongSwan before 5.9.12 has a buffer overflow and possible unauthenticated remote code execution via a DH     public value that exceeds the internal buffer in charon-tkm's DH proxy. The earliest affected version is     5.3.0. An attack can occur via a crafted IKE_SA_INIT message. (CVE-2023-41913)

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-3663 advisory.

  - strongSwan reports: A vulnerability in charon-tkm related to processing              DH public values was     discovered in strongSwan              that can result in a buffer overflow and potentially     remote code execution. All versions since              5.3.0 are affected. (CVE-2023-41913)

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 a62c0c50-8aa0-11ee-ac0d-00e0670f2660 advisory.

  - strongSwan reports: A vulnerability in charon-tkm related to processing              DH public values was     discovered in strongSwan              that can result in a buffer overflow and potentially     remote code execution. All versions since              5.3.0 are affected. (CVE-2023-41913)

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 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:4529-1 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 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:4514-1 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 SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:4515-1 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 SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:4516-1 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 Debian 11 / 12 host has packages installed that are affected by a vulnerability as referenced in the dsa-5560 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 20.04 LTS / 22.04 LTS / 23.04 / 23.10 host has packages installed that are affected by a vulnerability as referenced in the USN-6488-1 advisory.

    Florian Picca discovered that strongSwan incorrectly handled certain DH public values. A remote attacker     could use this issue to cause strongSwan to crash, resulting in a denial of service, or possibly execute     arbitrary code.

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
211128	Fedora 41 : strongswan (2024-dc9e695c3a)	Nessus	Fedora Local Security Checks	critical
204630	Photon OS 3.0: Strongswan PHSA-2023-3.0-0694	Nessus	PhotonOS Local Security Checks	critical
204470	Photon OS 4.0: Strongswan PHSA-2023-4.0-0522	Nessus	PhotonOS Local Security Checks	critical
204202	Photon OS 5.0: Strongswan PHSA-2023-5.0-0159	Nessus	PhotonOS Local Security Checks	critical
201705	CBL Mariner 2.0 Security Update: strongswan (CVE-2023-41913)	Nessus	MarinerOS Local Security Checks	critical
200277	Fedora 40 : strongswan (2024-6712c699fc)	Nessus	Fedora Local Security Checks	critical
186993	Ubuntu 16.04 ESM / 18.04 ESM : strongSwan vulnerability (USN-6488-2)	Nessus	Ubuntu Local Security Checks	critical
186708	FreeBSD : strongswan -- buffer overflow (bbda3d16-968e-11ee-b780-b42e991fc52e)	Nessus	FreeBSD Local Security Checks	critical
186244	Debian DLA-3663-1 : strongswan - LTS security update	Nessus	Debian Local Security Checks	critical
186241	FreeBSD : strongSwan -- vulnerability in charon-tkm (a62c0c50-8aa0-11ee-ac0d-00e0670f2660)	Nessus	FreeBSD Local Security Checks	critical
186237	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : strongswan (SUSE-SU-2023:4529-1)	Nessus	SuSE Local Security Checks	critical
186171	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : strongswan (SUSE-SU-2023:4514-1)	Nessus	SuSE Local Security Checks	critical
186168	SUSE SLES15 Security Update : strongswan (SUSE-SU-2023:4515-1)	Nessus	SuSE Local Security Checks	critical
186164	SUSE SLES15 Security Update : strongswan (SUSE-SU-2023:4516-1)	Nessus	SuSE Local Security Checks	critical
186027	Debian DSA-5560-1 : strongswan - security update	Nessus	Debian Local Security Checks	critical
186013	Ubuntu 20.04 LTS / 22.04 LTS / 23.04 / 23.10 : strongSwan vulnerability (USN-6488-1)	Nessus	Ubuntu Local Security Checks	critical

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