Vulnerability-Lookup

GHSA-Q9X7-4RF7-4XQ2

Vulnerability from github – Published: 2025-07-25 18:30 – Updated: 2025-07-25 18:30

Details

A flaw was found in the SFTP server message decoding logic of libssh. The issue occurs due to an incorrect packet length check that allows an integer overflow when handling large payload sizes on 32-bit systems. This issue leads to failed memory allocation and causes the server process to crash, resulting in a denial of service.

Severity

4.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2025-5449"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-25T18:15:26Z",
    "severity": "MODERATE"
  },
  "details": "A flaw was found in the SFTP server message decoding logic of libssh. The issue occurs due to an incorrect packet length check that allows an integer overflow when handling large payload sizes on 32-bit systems. This issue leads to failed memory allocation and causes the server process to crash, resulting in a denial of service.",
  "id": "GHSA-q9x7-4rf7-4xq2",
  "modified": "2025-07-25T18:30:41Z",
  "published": "2025-07-25T18:30:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-5449"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2025-5449"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2369705"
    },
    {
      "type": "WEB",
      "url": "https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11\u0026id=261612179f740bc62ba363d98b3bd5e5573a811f"
    },
    {
      "type": "WEB",
      "url": "https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11\u0026id=3443aec90188d6aab9282afc80a81df5ab72c4da"
    },
    {
      "type": "WEB",
      "url": "https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11\u0026id=5504ff40515439a5fecbb17da7483000c4d12eb7"
    },
    {
      "type": "WEB",
      "url": "https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11\u0026id=78485f446af9b30e37eb8f177b81940710d54496"
    },
    {
      "type": "WEB",
      "url": "https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11\u0026id=f79ec51b7fd519dbc5737a7ba826e3ed093f6ceb"
    },
    {
      "type": "WEB",
      "url": "https://www.libssh.org/security/advisories/CVE-2025-5449.txt"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-5449 (GCVE-0-2025-5449)

Vulnerability from cvelistv5 – Published: 2025-07-25 17:19 – Updated: 2026-01-08 03:11

Title

Libssh: integer overflow in libssh sftp server packet length validation leading to denial of service

Summary

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

redhat

References

8 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2025-5449	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2369705	issue-trackingx_refsource_REDHAT
https://git.libssh.org/projects/libssh.git/commit…
https://git.libssh.org/projects/libssh.git/commit…
https://git.libssh.org/projects/libssh.git/commit…
https://git.libssh.org/projects/libssh.git/commit…
https://git.libssh.org/projects/libssh.git/commit…
https://www.libssh.org/security/advisories/CVE-20…

Impacted products

7 products

Vendor	Product	Version
		Affected: 0.11.0 , ≤ 0.11.1 (semver)
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4

Date Public

2025-06-24 00:00

Credits

Red Hat would like to thank Ronald Crane for reporting this issue.

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-Q9X7-4RF7-4XQ2

CVE-2025-5449 (GCVE-0-2025-5449)

Tags

Sightings

Nomenclature