The kex_agree_methods function in libssh2 before 1.5.0 allows remote servers to cause a…
Priority LOW 36CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- Partial Red Hat: 8 fixed, 1 without a fix
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
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.
Why it matters now
EPSS 0.03501 89th percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 8 fixed, 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Debian |
| cpe:2.3:a:libssh2:libssh2:*:*:*:*:*:*:*:* | up to 1.4.3 | Vulnerable | The libssh2 Project |
| cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:* | 20 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:* | 21 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* | 22 | Vulnerable | Fedoraproject |
- cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
- cpe:2.3:a:libssh2:libssh2:*:*:*:*:*:*:*:* Versions up to 1.4.3 Vulnerable ·The libssh2 Project
- cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:* Versions 20 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:* Versions 21 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* Versions 22 Vulnerable ·Fedoraproject
Remediation
Red Hat 1 advisory
- RHSA-2015:2140 Released 2015-11-19 · Red Hat rating Lowlibssh2 security and bug fix update
- Red Hat Enterprise Linux Client (v. 7) libssh2-1.4.3-10.el7
- Red Hat Enterprise Linux Client Optional (v. 7) libssh2-devel-1.4.3-10.el7, libssh2-docs-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-devel-1.4.3-10.el7, libssh2-docs-1.4.3-10.el7
- Red Hat Enterprise Linux Server (v. 7) libssh2-1.4.3-10.el7, libssh2-1.4.3-10.el7.ppc
- Red Hat Enterprise Linux Server Optional (v. 7) libssh2-devel-1.4.3-10.el7, libssh2-devel-1.4.3-10.el7.ppc, libssh2-docs-1.4.3-10.el7
- Red Hat Enterprise Linux Workstation (v. 7) libssh2-1.4.3-10.el7
- Red Hat Enterprise Linux Workstation Optional (v. 7) libssh2-devel-1.4.3-10.el7, libssh2-docs-1.4.3-10.el7
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2015:2140 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2015:2140 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2015:2140 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2015:2140 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2015:2140 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2015:2140 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2015:2140 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2015:2140 |
Timeline
- 2026-10-02 Threatist record created from CVE-2015-1782
- 2026-10-03 Alias added: GHSA-47g3-jvrj-pm9m
References
Sources
- CVE-2015-1782 · CVE Program
- CVE-2015-1782 · NVD
- FIRST EPSS
- GHSA-47g3-jvrj-pm9m · GitHub Advisory Database · CC BY 4.0
- CVE-2015-1782 · Red Hat security data · CC BY 4.0
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