Vulnerability-Lookup

OPENSUSE-SU-2026:20581-1

Vulnerability from csaf_opensuse - Published: 2026-04-14 16:21 - Updated: 2026-09-17 17:30

Summary

Security update for nebula

Severity

Important

Notes

Title of the patch: Security update for nebula

Description of the patch: This update for nebula fixes the following issues: Changes in nebula: - Update to version 1.10.3: * Fix an issue where blocklist bypass is possible when using curve P256 Any newly issued P256 based certificates will have their signature clamped to the low-s form. Nebula will assert the low-s signature form when validating certificates in a future version - Update to version 1.10.2: * Fix panic when using use_system_route_table - Update to version 1.10.1: * Fix a bug where an unsafe route derived from the system route table could be lost on a config reload * Fix the PEM banner for ECDSA P256 public keys * Fix a bug in handshake processing when a peer sends an unexpected public key * Add a config option to control accepting recv_error packets which defaults to always - Update to version 1.10.0: * Support for ipv6 and multiple ipv4/6 addresses in the overlay * Add the ability to mark packets on linux to better target nebula packets in iptables/nftables * Add ECMP support for unsafe_routes * PKCS11 support for P256 keys when built with pkcs11 tag * default_local_cidr_any now defaults to false * Improve logging when a relay is in use on an inbound packet * Avoid fatal errors if rountines is > 1 on systems that <= 1 * Log a warning if a firewall rule contains an any that negates a more restrictive filter * Accept encrypted CA passphrase from an environment variable * Allow handshaking with any trusted remote * Log only the count of blocklisted certificate fingerprints instead of the entire list * Don't fatal when the ssh server is unable to be configured successfully * Improve lost packet statistics * Honor remote_allow_list in hole punch response - remove patch fix-CVE-2025-22869.patch, fixed upstream - update to version 1.9.7: * Disable sending recv_error messages when a packet is received outside the allowable counter window * Improve error messages and remove some unnecessary fatal conditions in the generic udp listener - update to version 1.9.6: * Support dropping inactive tunnels. This is disabled by default * Ensure the same relay tunnel is always used when multiple relay tunnels are present * Fix relay migration panic

Patchnames: openSUSE-Leap-16.0-packagehub-199

CVE-2025-22869

7.5 (High)


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

Affected products

Recommended 6 products

Product	Version	Remediation
Unresolved product id: openSUSE Leap 16.0:nebula-0:1.10.3-bp160.1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:nebula-0:1.10.3-bp160.1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:nebula-0:1.10.3-bp160.1.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:nebula-cert-0:1.10.3-bp160.1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:nebula-cert-0:1.10.3-bp160.1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:nebula-cert-0:1.10.3-bp160.1.1.x86_64	—	Vendor Fix

Threats

Impact important

References

5 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/o…	self
https://www.suse.com/security/cve/CVE-2025-22869/	self
https://www.suse.com/security/cve/CVE-2025-22869	external
https://bugzilla.suse.com/1239322	external

JSON

To clipboard

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}

CVE-2025-22869 (GCVE-0-2025-22869)

Vulnerability from cvelistv5 – Published: 2025-02-26 03:07 – Updated: 2025-04-11 22:03

Title

Potential denial of service in golang.org/x/crypto

Summary

SSH servers which implement file transfer protocols are vulnerable to a denial of service attack from clients which complete the key exchange slowly, or not at all, causing pending content to be read into memory, but never transmitted.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-26 14:57 UTC

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

Go CNA under the Google root

CNA scorecard E 42/100 over 75 records in the last 180 days details

References

4 references

URL	Tags
https://go.dev/cl/652135
https://go.dev/issue/71931
https://pkg.go.dev/vuln/GO-2025-3487
https://security.netapp.com/advisory/ntap-2025041…

Impacted products

1 product

Vendor	Product	Version
golang.org/x/crypto	golang.org/x/crypto/ssh	Affected: 0 , < 0.35.0 (semver)

Credits

Yuichi Watanabe

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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                "options": [
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                  {
                    "Automatable": "yes"
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                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-26T14:57:07.968721Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-770",
                "description": "CWE-770 Allocation of Resources Without Limits or Throttling",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-26T14:57:49.252Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-04-11T22:03:24.222Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://security.netapp.com/advisory/ntap-20250411-0010/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "golang.org/x/crypto/ssh",
          "product": "golang.org/x/crypto/ssh",
          "programRoutines": [
            {
              "name": "newHandshakeTransport"
            },
            {
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            },
            {
              "name": "handshakeTransport.kexLoop"
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            {
              "name": "handshakeTransport.writePacket"
            },
            {
              "name": "Client.Dial"
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            {
              "name": "Client.DialContext"
            },
            {
              "name": "Client.DialTCP"
            },
            {
              "name": "Client.Listen"
            },
            {
              "name": "Client.ListenTCP"
            },
            {
              "name": "Client.ListenUnix"
            },
            {
              "name": "Client.NewSession"
            },
            {
              "name": "Dial"
            },
            {
              "name": "DiscardRequests"
            },
            {
              "name": "NewClient"
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            {
              "name": "NewClientConn"
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              "name": "NewServerConn"
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              "name": "Request.Reply"
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            {
              "name": "Session.Close"
            },
            {
              "name": "Session.CombinedOutput"
            },
            {
              "name": "Session.Output"
            },
            {
              "name": "Session.RequestPty"
            },
            {
              "name": "Session.RequestSubsystem"
            },
            {
              "name": "Session.Run"
            },
            {
              "name": "Session.SendRequest"
            },
            {
              "name": "Session.Setenv"
            },
            {
              "name": "Session.Shell"
            },
            {
              "name": "Session.Signal"
            },
            {
              "name": "Session.Start"
            },
            {
              "name": "Session.WindowChange"
            },
            {
              "name": "channel.Accept"
            },
            {
              "name": "channel.Close"
            },
            {
              "name": "channel.CloseWrite"
            },
            {
              "name": "channel.Read"
            },
            {
              "name": "channel.ReadExtended"
            },
            {
              "name": "channel.Reject"
            },
            {
              "name": "channel.SendRequest"
            },
            {
              "name": "channel.Write"
            },
            {
              "name": "channel.WriteExtended"
            },
            {
              "name": "connection.SendAuthBanner"
            },
            {
              "name": "curve25519sha256.Client"
            },
            {
              "name": "curve25519sha256.Server"
            },
            {
              "name": "dhGEXSHA.Client"
            },
            {
              "name": "dhGEXSHA.Server"
            },
            {
              "name": "dhGroup.Client"
            },
            {
              "name": "dhGroup.Server"
            },
            {
              "name": "ecdh.Client"
            },
            {
              "name": "ecdh.Server"
            },
            {
              "name": "extChannel.Read"
            },
            {
              "name": "extChannel.Write"
            },
            {
              "name": "mux.OpenChannel"
            },
            {
              "name": "mux.SendRequest"
            },
            {
              "name": "sessionStdin.Close"
            },
            {
              "name": "sshClientKeyboardInteractive.Challenge"
            },
            {
              "name": "tcpListener.Accept"
            },
            {
              "name": "tcpListener.Close"
            },
            {
              "name": "unixListener.Accept"
            },
            {
              "name": "unixListener.Close"
            }
          ],
          "vendor": "golang.org/x/crypto",
          "versions": [
            {
              "lessThan": "0.35.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Yuichi Watanabe"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "SSH servers which implement file transfer protocols are vulnerable to a denial of service attack from clients which complete the key exchange slowly, or not at all, causing pending content to be read into memory, but never transmitted."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-02-26T03:07:48.855Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
        {
          "url": "https://go.dev/cl/652135"
        },
        {
          "url": "https://go.dev/issue/71931"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2025-3487"
        }
      ],
      "title": "Potential denial of service in golang.org/x/crypto"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2025-22869",
    "datePublished": "2025-02-26T03:07:48.855Z",
    "dateReserved": "2025-01-08T19:11:42.834Z",
    "dateUpdated": "2025-04-11T22:03:24.222Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

OPENSUSE-SU-2026:20581-1

CVE-2025-22869 (GCVE-0-2025-22869)

Tags

Sightings

Nomenclature

Related by attack behaviour