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-2025:3834-1 advisory.

    - CVE-2025-62291: fixed buffer overflow when handling EAP-MSCHAPv2 failure requests (bsc#1251941)

Tenable has extracted the preceding description block directly from the SUSE 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 22.04 LTS / 24.04 LTS / 25.04 / 25.10 host has packages installed that are affected by a vulnerability as referenced in the USN-7841-1 advisory.

    Xu Biang discovered that the strongSwan client incorrectly handled EAP-MSCHAPv2 failure requests. If a     user or automated system were tricked into connecting to a malicious server, 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.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Xu Biang reports: The eap-mschapv2 plugin doesn't correctly check the length of an EAP-MSCHAPv2 Failure     Request packet on the client,        which can cause an integer underflow that leads to a crash and,     depending on the compiler options, even a heap-based        buffer overflow that's potentially exploitable     for remote code execution. Affected are all strongSwan versions since 4.2.12. (CVE-2025-62291)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-4359 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-4359-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                      Markus Koschany     November 03, 2025                             https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : strongswan     Version        : 5.9.1-1+deb11u5     CVE ID         : CVE-2025-62291

    Xu Biang discovered a buffer overflow bug in the eap-mschapv2 plugin of     strongSwan, an IKE/IPsec suite.

    The eap-mschapv2 plugin does not correctly check the length of an     EAP-MSCHAPv2 Failure Request packet on the client, which can cause an     integer underflow that leads to a crash, and a heap-based buffer overflow     that's potentially exploitable for remote code execution.

    For Debian 11 bullseye, this problem has been fixed in version     5.9.1-1+deb11u5.

    We recommend that you upgrade your strongswan packages.

    For the detailed security status of strongswan please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/strongswan

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: This is a digitally signed message part

Tenable has extracted the preceding description block directly from the Debian 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 Debian 12 / 13 host has packages installed that are affected by a vulnerability as referenced in the dsa-6041 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6041-1                   security@debian.org     https://www.debian.org/security/                        Yves-Alexis Perez     October 27, 2025                      https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : strongswan     CVE ID         : CVE-2025-62291

    Xu Biang discovered a buffer overflow bug in the eap-mschapv2 plugin of     strongSwan, an IKE/IPsec suite.

    The eap-mschapv2 plugin doesn't correctly check the length of an     EAP-MSCHAPv2 Failure Request packet on the client, which can cause an     integer underflow that leads to a crash, and a heap-based buffer     overflow that's potentially exploitable for remote code execution.

    For the oldstable distribution (bookworm), this problem has been fixed     in version 5.9.8-5+deb12u2.

    For the stable distribution (trixie), this problem has been fixed in     version 6.0.1-6+deb13u2.

    We recommend that you upgrade your strongswan packages.

    For the detailed security status of strongswan please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/strongswan

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian 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 SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2025:3873-1 advisory.

    - CVE-2025-62291: fixed a buffer overflow when handling EAP-MSCHAPv2 failure requests (bsc#1251941)

Tenable has extracted the preceding description block directly from the SUSE 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 1f1cf967-b35c-11f0-bce7-bc2411002f50 advisory.

    Xu Biang reports:
    The eap-mschapv2 plugin doesn't correctly check the length of an EAP-MSCHAPv2 Failure Request packet on     the client,            which can cause an integer underflow that leads to a crash and, depending on the compiler options,     even a heap-based            buffer overflow that's potentially exploitable for remote code execution. Affected are all     strongSwan versions since 4.2.12.

Tenable has extracted the preceding description block directly from the FreeBSD 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 SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2025:3856-1 advisory.

    - CVE-2025-62291: fixed a buffer overflow when handling EAP-MSCHAPv2 failure requests (bsc#1251941)

Tenable has extracted the preceding description block directly from the SUSE 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 SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2025:3857-1 advisory.

    - CVE-2025-62291: fixed buffer overflow when handling EAP-MSCHAPv2 failure requests (bsc#1251941)

Tenable has extracted the preceding description block directly from the SUSE 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 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2025:3855-1 advisory.

    - CVE-2025-62291: fixed buffer overflow when handling EAP-MSCHAPv2 failure requests (bsc#1251941)

Tenable has extracted the preceding description block directly from the SUSE 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	Published	Updated	Severity
271950	SUSE SLED15 / SLES15 Security Update : strongswan (SUSE-SU-2025:3834-1)	Nessus	SuSE Local Security Checks	10/29/2025	10/29/2025	high
271838	Ubuntu 22.04 LTS / 24.04 LTS / 25.04 / 25.10 : strongSwan vulnerability (USN-7841-1)	Nessus	Ubuntu Local Security Checks	10/28/2025	10/28/2025	critical
271825	Linux Distros Unpatched Vulnerability : CVE-2025-62291	Nessus	Misc.	10/28/2025	11/3/2025	critical
272195	Debian dla-4359 : charon-cmd - security update	Nessus	Debian Local Security Checks	11/3/2025	11/3/2025	high
271730	Debian dsa-6041 : charon-cmd - security update	Nessus	Debian Local Security Checks	10/28/2025	10/28/2025	critical
272085	SUSE SLES15 Security Update : strongswan (SUSE-SU-2025:3873-1)	Nessus	SuSE Local Security Checks	10/31/2025	10/31/2025	high
271783	FreeBSD : strongSwan -- Heap-based buffer overflow in eap-mschapv2 plugin due to improper handling of failure request packets (1f1cf967-b35c-11f0-bce7-bc2411002f50)	Nessus	FreeBSD Local Security Checks	10/28/2025	10/28/2025	critical
272006	SUSE SLES15 Security Update : strongswan (SUSE-SU-2025:3856-1)	Nessus	SuSE Local Security Checks	10/30/2025	10/30/2025	high
272008	SUSE SLES15 Security Update : strongswan (SUSE-SU-2025:3857-1)	Nessus	SuSE Local Security Checks	10/30/2025	10/30/2025	high
272010	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : strongswan (SUSE-SU-2025:3855-1)	Nessus	SuSE Local Security Checks	10/30/2025	10/30/2025	high

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