CVE Feed

    Dashboard / CVE / CVE-2019-13115

    CVE-2019-13115

    In libssh2 before 1.9.0, kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c has an integer overflow that could lead to an out-of-bounds read in the way packets are read from the server. A remote attacker who compromises a 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. This is related to an _libssh2_check_length mistake, and is different from the various issues fixed in 1.8.1, such as CVE-2019-3855.

    Published:Jul 16, 2019
    Last Modified:Nov 21, 2024
    EPS:Jul 16, 2019
    EPSS Score:0.42816
    CVSS Score:8.1

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    F5
    Product
    Traffix Systems Signaling Delivery Controller
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Libssh2
    Product
    Libssh2
    Vendor
    Netapp
    Product
    Cloud Backup
    Vendor
    Netapp
    Product
    E-series Santricity Os Controller
    Vendor
    Netapp
    Product
    Ontap Select Deploy Administration Utility

    Exploits

    https://blog.semmle.com/libssh2-integer-overflow/https://blog.semmle.com/libssh2-integer-overflow/https://github.com/CSSProject/libssh2-Exploithttps://github.com/viz27/Libssh2-Exploit

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers
    CAPEC-92 Forced Integer Overflow

    Related CVEs

    CVE-2026-77118 (CVSS 8.4) — A heap out-of-bounds write exists in the Photo CD (PCD) decoder of GraphicsMagick. In DecodeImage() (coders/pc…
    CVE-2026-56968 (CVSS 3.7) — GNU SASL before 2.2.4 lacks sanitization of a short challenge in _gsasl_ntlm_client_step in the NTLM client, w…
    CVE-2026-49975 (CVSS 7.5) — Memory Allocation with Excessive Size Value vulnerability in Apache HTTP Server's mod_http leads to denial of …
    CVE-2026-9256 (CVSS 9.2) — NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerabilit…
    CVE-2026-31431 (CVSS 7.8) — In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating …
    CVE-2026-34757 (CVSS 5.1) — LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network …
    CVE-2026-4775 (CVSS 7.8) — A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow vulnerabili…
    CVE-2025-63261 (CVSS 7.8) — AWStats 8.0 is vulnerable to Command Injection via the open function…
    CVE-2026-3497 (CVSS 6.9) — Vulnerability in the OpenSSH GSSAPI delta included in various Linux distributions. This vulnerability affects …
    CVE-2026-1940 (CVSS 5.1) — An incomplete fix for CVE-2024-47778 allows an out-of-bounds read in gst_wavparse_adtl_chunk() function. The p…

    References

    http://packetstormsecurity.com/files/172834/libssh2-1.8.2-Out-Of-Bounds-Read.html
    https://blog.semmle.com/libssh2-integer-overflow/
    https://github.com/libssh2/libssh2/compare/02ecf17...42d37aa
    https://github.com/libssh2/libssh2/pull/350
    https://libssh2.org/changes.html
    https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
    https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
    https://lists.debian.org/debian-lts-announce/2019/07/msg00024.html
    https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html
    https://lists.debian.org/debian-lts-announce/2023/09/msg00006.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6LUNHPW64IGCASZ4JQ2J5KDXNZN53DWW/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M7IF3LNHOA75O4WZWIHJLIRMA5LJUED3/
    https://security.netapp.com/advisory/ntap-20190806-0002/
    https://support.f5.com/csp/article/K13322484
    https://support.f5.com/csp/article/K13322484?utm_source=f5support&amp%3Butm_medium=RSS
    http://packetstormsecurity.com/files/172834/libssh2-1.8.2-Out-Of-Bounds-Read.html
    https://blog.semmle.com/libssh2-integer-overflow/
    https://github.com/libssh2/libssh2/compare/02ecf17...42d37aa
    https://github.com/libssh2/libssh2/pull/350
    https://libssh2.org/changes.html
    https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
    https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
    https://lists.debian.org/debian-lts-announce/2019/07/msg00024.html
    https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html
    https://lists.debian.org/debian-lts-announce/2023/09/msg00006.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6LUNHPW64IGCASZ4JQ2J5KDXNZN53DWW/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M7IF3LNHOA75O4WZWIHJLIRMA5LJUED3/
    https://security.netapp.com/advisory/ntap-20190806-0002/
    https://support.f5.com/csp/article/K13322484
    https://support.f5.com/csp/article/K13322484?utm_source=f5support&amp%3Butm_medium=RSS

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High