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
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    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.

Detections

Analytics

Debian dla-3559 : libssh2-1 - security update

high Nessus Plugin ID 181187

Version 1.1

Version 1.0

Version 1.1 Jan 22, 2025, 3:03 PM CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Plugin metadata Plugin Feed: 202501221503
Version 1.0 Sep 9, 2023, 2:07 AM New Plugin Feed: 202309090207