Vulnerability-Lookup

alsa-2025:3833

Vulnerability from osv_almalinux

Published

2025-04-14 00:00

Modified

2025-04-15 14:12

Summary

Important: gvisor-tap-vsock security update

Details

A replacement for libslirp and VPNKit, written in pure Go. It is based on the network stack of gVisor and is used to provide networking for podman-machine virtual machines. Compared to libslirp, gvisor-tap-vsock brings a configurable DNS server and dynamic port forwarding.

Security Fix(es):

golang.org/x/crypto/ssh: Denial of Service in the Key Exchange of golang.org/x/crypto/ssh (CVE-2025-22869)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

URL

Type

	https://access.redhat.com/errata/RHSA-2025:3833	ADVISORY
	https://access.redhat.com/security/cve/CVE-2025-22869	REPORT
	https://bugzilla.redhat.com/2348367	REPORT
	https://errata.almalinux.org/9/ALSA-2025-3833.html	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "gvisor-tap-vsock"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6:0.8.5-1.el9_5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "A replacement for libslirp and VPNKit, written in pure Go. It is based on the network stack of gVisor and is used to provide networking for podman-machine virtual machines. Compared to libslirp, gvisor-tap-vsock brings a configurable DNS server and dynamic port forwarding.  \n\nSecurity Fix(es):  \n\n  * golang.org/x/crypto/ssh: Denial of Service in the Key Exchange of golang.org/x/crypto/ssh (CVE-2025-22869)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2025:3833",
  "modified": "2025-04-15T14:12:05Z",
  "published": "2025-04-14T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2025:3833"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-22869"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2348367"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/9/ALSA-2025-3833.html"
    }
  ],
  "related": [
    "CVE-2025-22869"
  ],
  "summary": "Important: gvisor-tap-vsock security update"
}

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

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

References

URL

Tags

	https://go.dev/cl/652135
	https://go.dev/issue/71931
	https://pkg.go.dev/vuln/GO-2025-3487

Impacted products

	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",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-22869",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "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"
            },
            {
              "name": "handshakeTransport.recordWriteError"
            },
            {
              "name": "handshakeTransport.kexLoop"
            },
            {
              "name": "handshakeTransport.writePacket"
            },
            {
              "name": "Client.Dial"
            },
            {
              "name": "Client.DialContext"
            },
            {
              "name": "Client.DialTCP"
            },
            {
              "name": "Client.Listen"
            },
            {
              "name": "Client.ListenTCP"
            },
            {
              "name": "Client.ListenUnix"
            },
            {
              "name": "Client.NewSession"
            },
            {
              "name": "Dial"
            },
            {
              "name": "DiscardRequests"
            },
            {
              "name": "NewClient"
            },
            {
              "name": "NewClientConn"
            },
            {
              "name": "NewServerConn"
            },
            {
              "name": "Request.Reply"
            },
            {
              "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

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.

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