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-2023:3555-1 advisory.

    - CVE-2020-22218: Fixed a bug in _libssh2_packet_add() which allows to access out of bounds memory.
    (bsc#1214527)

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 MiracleLinux 7 host has a package installed that is affected by a vulnerability as referenced in the AXSA:2023-6489:01 advisory.

    * libssh2: use-of-uninitialized-value in _libssh2_transport_read (CVE-2020-22218)

Tenable has extracted the preceding description block directly from the MiracleLinux 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 libssh2 package has been released.

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2025:0116 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2020-22218:
    An issue was discovered in function _libssh2_packet_add in libssh2 1.10.0 allows attackers to access out     of bounds memory.

Tenable has extracted the preceding description block directly from the Tencent Linux 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 CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2023:5615 advisory.

  - An issue was discovered in function _libssh2_packet_add in libssh2 1.10.0 allows attackers to access out     of bounds memory. (CVE-2020-22218)

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 F5 Networks BIG-IP installed on the remote host is prior to 17.1.2.2. It is, therefore, affected by a vulnerability as referenced in the K000138219 advisory.

    An issue was discovered in function _libssh2_packet_add in libssh2 1.10.0 allows attackers to access out     of bounds memory.(CVE-2020-22218)

Tenable has extracted the preceding description block directly from the F5 Networks BIG-IP 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 Tencent Linux installed on the remote TencentOS Server 2 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2023:0236 advisory.

    Package updates are available for TencentOS Server 2 that fix the following vulnerabilities:

      CVE-2020-22218:
      An issue was discovered in function _libssh2_packet_add in libssh2 1.10.0 allows attackers to access out     of bounds memory.

Tenable has extracted the preceding description block directly from the Tencent Linux 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 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3559 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-3559-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                       Guilhem Moulin     September 08, 2023                            https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : libssh2     Version        : 1.8.0-2.1+deb10u1     CVE ID         : CVE-2019-13115 CVE-2019-17498 CVE-2020-22218     Debian Bug     : 932329 943562

    Vulnerabilities were found in libssh2, a client-side C library     implementing the SSH2 protocol, which could lead to denial of service or     remote information disclosure.

    CVE-2019-13115

        Kevin Backhouse discovered an integer overflow vulnerability in kex.c's         kex_method_diffie_hellman_group_exchange_sha256_key_exchange()         function, which could lead to an out-of-bounds read in the way         packets are read from the server.  A remote attacker who compromises         an SSH server may be able to disclose sensitive information or cause         a denial of service condition on the client system when a user         connects to the server.

    CVE-2019-17498

        Kevin Backhouse discovered that the SSH_MSG_DISCONNECT logic in         packet.c has an integer overflow in a bounds check, thereby enabling         an attacker to specify an arbitrary (out-of-bounds) offset for a         subsequent memory read.  A malicious SSH server may be able to         disclose sensitive information or cause a denial of service         condition on the client system when a user connects to the server.

    CVE-2020-22218

        An issue was discovered in function _libssh2_packet_add(), which         could allow attackers to access out of bounds memory.

    For Debian 10 buster, these problems have been fixed in version     1.8.0-2.1+deb10u1.

    We recommend that you upgrade your libssh2 packages.

    For the detailed security status of libssh2 please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/libssh2

    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: PGP signature

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

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 AHV installed on the remote host is prior to 20220304.480. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AHV-20220304.480 advisory.

  - An issue in Zen 2 CPUs, under specific microarchitectural circumstances, may allow an attacker to     potentially access sensitive information. (CVE-2023-20593)

  - An issue was discovered in Python before 3.8.18, 3.9.x before 3.9.18, 3.10.x before 3.10.13, and 3.11.x     before 3.11.5. It primarily affects servers (such as HTTP servers) that use TLS client authentication. If     a TLS server-side socket is created, receives data into the socket buffer, and then is closed quickly,     there is a brief window where the SSLSocket instance will detect the socket as not connected and won't     initiate a handshake, but buffered data will still be readable from the socket buffer. This data will not     be authenticated if the server-side TLS peer is expecting client certificate authentication, and is     indistinguishable from valid TLS stream data. Data is limited in size to the amount that will fit in the     buffer. (The TLS connection cannot directly be used for data exfiltration because the vulnerable code path     requires that the connection be closed on initialization of the SSLSocket.) (CVE-2023-40217)

  - A use after free vulnerability exists in curl <7.87.0. Curl can be asked to *tunnel* virtually all     protocols it supports through an HTTP proxy. HTTP proxies can (and often do) deny such tunnel operations.
    When getting denied to tunnel the specific protocols SMB or TELNET, curl would use a heap-allocated struct     after it had been freed, in its transfer shutdown code path. (CVE-2022-43552)

  - A side channel vulnerability on some of the AMD CPUs may allow an attacker to influence the return address     prediction. This may result in speculative execution at an attacker-controlled address, potentially     leading to information disclosure. (CVE-2023-20569)

  - The code that processes control channel messages sent to `named` calls certain functions recursively     during packet parsing. Recursion depth is only limited by the maximum accepted packet size; depending on     the environment, this may cause the packet-parsing code to run out of available stack memory, causing     `named` to terminate unexpectedly. Since each incoming control channel message is fully parsed before its     contents are authenticated, exploiting this flaw does not require the attacker to hold a valid RNDC key;
    only network access to the control channel's configured TCP port is necessary. This issue affects BIND 9     versions 9.2.0 through 9.16.43, 9.18.0 through 9.18.18, 9.19.0 through 9.19.16, 9.9.3-S1 through     9.16.43-S1, and 9.18.0-S1 through 9.18.18-S1. (CVE-2023-3341)

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

ID	Name	Product	Family	Published	Updated	Severity
181200	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : libssh2_org (SUSE-SU-2023:3555-1)	Nessus	SuSE Local Security Checks	9/9/2023	6/26/2026	high
292078	MiracleLinux 7 : libssh2-1.8.0-4.el7.1 (AXSA:2023-6489:01)	Nessus	Miracle Linux Local Security Checks	1/20/2026	1/20/2026	high
204473	Photon OS 4.0: Libssh2 PHSA-2023-4.0-0465	Nessus	PhotonOS Local Security Checks	7/24/2024	7/24/2024	high
239389	TencentOS Server 4: libssh2 (TSSA-2025:0116)	Nessus	Tencent Local Security Checks	6/16/2025	11/20/2025	high
187229	CentOS 7 : libssh2 (RHSA-2023:5615)	Nessus	CentOS Local Security Checks	12/22/2023	10/9/2024	high
188029	F5 Networks BIG-IP : libssh2 vulnerability (K000138219)	Nessus	F5 Networks Local Security Checks	1/12/2024	10/16/2025	high
239951	TencentOS Server 2: libssh2 (TSSA-2023:0236)	Nessus	Tencent Local Security Checks	6/16/2025	11/20/2025	high
181187	Debian dla-3559 : libssh2-1 - security update	Nessus	Debian Local Security Checks	9/8/2023	1/22/2025	high
332734	Photon OS 5.0: Libssh2 PHSA-2023-5.0-91-0094	Nessus	PhotonOS Local Security Checks	8/5/2026	8/5/2026	high
190819	Nutanix AHV : Multiple Vulnerabilities (NXSA-AHV-20220304.480)	Nessus	Misc.	2/20/2024	2/19/2025	critical

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