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Fencer Intel
medium 6.8

CVE-2015-1782 json

The kex_agree_methods function in libssh2 before 1.5.0 allows remote servers to cause a denial of service (crash) or have other unspecified…

published 11y ago modified 4mo ago also EUVD-2015-1909

cvss
6.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.5%
EPSS 3.5% chance of exploitation in 30 days, percentile 89%
public exploits
0
none known

Summary

The kex_agree_methods function in libssh2 before 1.5.0 allows remote servers to cause a denial of service (crash) or have other unspecified impact via crafted length values in an SSH_MSG_KEXINIT packet.

Patch / fix

  • libssh2 Debian 14, Debian 13, Debian 12 1.4.3-4.1

debian advisories DEBIAN-CVE-2015-1782

  • libssh2 Ubuntu 14.04 LTS 1.4.3-2ubuntu0.2

ubuntu advisories UBUNTU-CVE-2015-1782

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libssh2 RHEL 7 1.4.3-10.el7

red hat advisories RHSA-2015:2140

  • libssh2_org SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 1.11.0-29.6.1
  • libssh2_org SLES for SAP 12, SLES 12, SLED 12 +1 more 1.4.3-11.1

suse advisories SUSE-RU-2023:4066-1SUSE-SU-2015:0669-1

  • libssh2_org openSUSE Tumbleweed 1.7.0-1.5

opensuse advisories openSUSE-SU-2024:10190-1

Is CVE-2015-1782 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2015-1782 updated cvss 7.8

libssh2: Using SSH_MSG_KEXINIT data unbounded

  • Red Hat Enterprise Linux 6 libssh2
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) libssh2 1.4.3-10.el7 Red Hat Enterprise Linux Client Optional (v. 7) libssh2-docs 1.4.3-10.el7, libssh2-devel 1.4.3-10.el7, libssh2-debuginfo 1.4.3-10.el7 Red Hat Enterprise Linux ComputeNode (v. 7) libssh2 1.4.3-10.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) libssh2-docs 1.4.3-10.el7, libssh2-devel 1.4.3-10.el7, libssh2-debuginfo 1.4.3-10.el7 Red Hat Enterprise Linux Server (v. 7) libssh2 1.4.3-10.el7 Red Hat Enterprise Linux Server Optional (v. 7) libssh2-docs 1.4.3-10.el7, libssh2-devel 1.4.3-10.el7, libssh2-debuginfo 1.4.3-10.el7
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 7) libssh2 1.4.3-10.el7 Red Hat Enterprise Linux Workstation Optional (v. 7) libssh2-docs 1.4.3-10.el7, libssh2-devel 1.4.3-10.el7, libssh2-debuginfo 1.4.3-10.el7
    fixed: vendor fix RHSA-2015:2140

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.50% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.