Vulnerability-Lookup

alsa-2026:0437

Vulnerability from osv_almalinux

Published

2026-01-12 00:00

Modified

2026-01-16 15:38

Summary

Important: buildah security update

Details

The buildah package provides a tool for facilitating building OCI container images. Among other things, buildah enables you to: Create a working container, either from scratch or using an image as a starting point; Create an image, either from a working container or using the instructions in a Dockerfile; Build both Docker and OCI images.

Security Fix(es):

golang.org/x/crypto/ssh/agent: golang.org/x/crypto/ssh/agent: SSH client panic due to unexpected SSH_AGENT_SUCCESS (CVE-2025-47913)

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.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "buildah"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.41.8-1.el9_7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "buildah-tests"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.41.8-1.el9_7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "The buildah package provides a tool for facilitating building OCI container images. Among other things, buildah enables you to: Create a working container, either from scratch or using an image as a starting point; Create an image, either from a working container or using the instructions in a Dockerfile; Build both Docker and OCI images.   \n\nSecurity Fix(es):  \n\n  * golang.org/x/crypto/ssh/agent: golang.org/x/crypto/ssh/agent: SSH client panic due to unexpected SSH_AGENT_SUCCESS (CVE-2025-47913)\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-2026:0437",
  "modified": "2026-01-16T15:38:30Z",
  "published": "2026-01-12T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:0437"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-47913"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2414943"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/9/ALSA-2026-0437.html"
    }
  ],
  "related": [
    "CVE-2025-47913"
  ],
  "summary": "Important: buildah security update"
}

CVE-2025-47913 (GCVE-0-2025-47913)

Vulnerability from cvelistv5 – Published: 2025-11-13 21:29 – Updated: 2025-12-16 16:43

Title

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

Summary

SSH clients receiving SSH_AGENT_SUCCESS when expecting a typed response will panic and cause early termination of the client process.

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-703 - Improper Handling of Exceptional Conditions

Assigner

References

URL

Tags

	https://go.dev/cl/700295
	https://go.dev/issue/75178
	https://github.com/advisories/GHSA-56w8-48fp-6mgv
	https://pkg.go.dev/vuln/GO-2025-4116

Impacted products

	Vendor	Product	Version
	golang.org/x/crypto	golang.org/x/crypto/ssh/agent	Affected: 0 , < 0.43.0 (semver)

Credits

Jakub Ciolek Nicola Murino

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-2025-47913",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-11-13T21:47:44.206349Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-11-13T21:47:50.864Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "golang.org/x/crypto/ssh/agent",
          "product": "golang.org/x/crypto/ssh/agent",
          "programRoutines": [
            {
              "name": "client.SignWithFlags"
            },
            {
              "name": "client.List"
            },
            {
              "name": "agentKeyringSigner.Sign"
            },
            {
              "name": "agentKeyringSigner.SignWithAlgorithm"
            },
            {
              "name": "client.Sign"
            },
            {
              "name": "client.Signers"
            }
          ],
          "vendor": "golang.org/x/crypto",
          "versions": [
            {
              "lessThan": "0.43.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Jakub Ciolek"
        },
        {
          "lang": "en",
          "value": "Nicola Murino"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "SSH clients receiving SSH_AGENT_SUCCESS when expecting a typed response will panic and cause early termination of the client process."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-703: Improper Handling of Exceptional Conditions",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-16T16:43:43.633Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
        {
          "url": "https://go.dev/cl/700295"
        },
        {
          "url": "https://go.dev/issue/75178"
        },
        {
          "url": "https://github.com/advisories/GHSA-56w8-48fp-6mgv"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2025-4116"
        }
      ],
      "title": "Potential denial of service in golang.org/x/crypto/ssh/agent"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2025-47913",
    "datePublished": "2025-11-13T21:29:39.907Z",
    "dateReserved": "2025-05-13T23:31:29.597Z",
    "dateUpdated": "2025-12-16T16:43:43.633Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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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