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Package "libssh-4"

Name: libssh-4

Description:

tiny C SSH library (OpenSSL flavor)
Latest version: 0.11.1-1ubuntu0.2
Release: plucky (25.04)
Level: updates
Repository: main
Head package: libssh
Homepage: https://www.libssh.org/

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Other versions of "libssh-4" in Plucky

Repository Area Version
base main 0.11.1-1
security main 0.11.1-1ubuntu0.2

Changelog

Version: 0.11.1-1ubuntu0.2 2025-10-31 04:07:28 UTC

  libssh (0.11.1-1ubuntu0.2) plucky-security; urgency=medium

  * SECURITY UPDATE: NULL pointer dereference
    - debian/patches/CVE-2025-8114.patch: sets rc to SSH_ERROR prior to goto
      error in ssh_make_sessionid() of src/kex.c.
    - CVE-2025-8114

 -- Ian Constantin <email address hidden> Wed, 29 Oct 2025 14:57:57 +0200
Source diff to previous version
CVE-2025-8114 A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange (KEX) process, an all

Version: 0.11.1-1ubuntu0.1 2025-07-07 19:07:16 UTC

  libssh (0.11.1-1ubuntu0.1) plucky-security; urgency=medium

  * SECURITY UPDATE: Write beyond bounds in binary to base64 conversion
    functions
    - debian/patches/CVE-2025-4877.patch: prevent integer overflow and
      potential OOB.
    - CVE-2025-4877
  * SECURITY UPDATE: Use of uninitialized variable in
    privatekey_from_file()
    - debian/patches/CVE-2025-4878-1.patch: initialize pointers where
      possible.
    - debian/patches/CVE-2025-4878-2.patch: properly check return value to
      avoid NULL pointer dereference.
    - CVE-2025-4878
  * SECURITY UPDATE: OOB read in sftp_handle function
    - debian/patches/CVE-2025-5318.patch: fix possible buffer overrun.
    - CVE-2025-5318
  * SECURITY UPDATE: Double free in functions exporting keys
    - debian/patches/CVE-2025-5351.patch: avoid double-free on low-memory
      conditions.
    - CVE-2025-5351
  * SECURITY UPDATE: ssh_kdf() returns a success code on certain failures
    - debian/patches/CVE-2025-5372-pre1.patch: Reformat ssh_kdf().
    - debian/patches/CVE-2025-5372.patch: simplify error checking and
      handling of return codes in ssh_kdf().
    - CVE-2025-5372
  * SECURITY UPDATE: Likely read beyond bounds in sftp server message
    decoding
    - debian/patches/CVE-2025-5449-1.patch: avoid memory leak when we run
      out of handles during sftp_open.
    - debian/patches/CVE-2025-5449-2.patch: reproducer for sftp handles
      exhaustion.
    - debian/patches/CVE-2025-5449-3.patch: avoid NULL dereference for
      invalid handles.
    - debian/patches/CVE-2025-5449-4.patch: fix possible read behind buffer
      on 32bit arch.
    - debian/patches/CVE-2025-5449-5.patch: use constant for return values.
    - CVE-2025-5449
  * SECURITY UPDATE: Invalid return code for chacha20 poly1305 with OpenSSL
    backend
    - debian/patches/CVE-2025-5987.patch: correctly detect failures of
      chacha initialization.
    - CVE-2025-5987
  * SECURITY UPDATE: Missing packet filter may expose to variant of
    Terrapin attack
    - debian/patches/missing_packet_filter.patch: implement missing packet
      filter for DH GEX.
    - No CVE number

 -- Marc Deslauriers <email address hidden> Mon, 30 Jun 2025 09:40:59 -0400
CVE-2025-5318 A flaw was found in the libssh library. An out-of-bounds read can be triggered in the sftp_handle function due to an incorrect comparison check that
CVE-2025-5351 A flaw was found in the key export functionality of libssh. The issue occurs in the internal function responsible for converting cryptographic keys i
CVE-2025-5372 A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the ssh_kdf() function responsible for key derivation


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