csaf_redhat - rhsa-2024

rhsa-2024_2033

Vulnerability from csaf_redhat

Published

2024-04-24 06:53

Modified

2024-12-02 06:58

Summary

Red Hat Security Advisory: libreswan security and bug fix update

Notes

Topic

An update for libreswan is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details

Libreswan is an implementation of IPsec and IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network (VPN). Security Fix(es): * libreswan: Missing PreSharedKey for connection can cause crash (CVE-2024-2357) 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.

This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Andrew Vaughn"
          ]
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      ],
      "cve": "CVE-2024-2357",
      "cwe": {
        "id": "CWE-400",
        "name": "Uncontrolled Resource Consumption"
      },
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          "text": "2268952"
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      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Libreswan. This issue causes Libreswan to restart under some IKEv2 retransmit scenarios when a connection is configured to use PreSharedKeys (authby=secret), and the connection cannot find a matching configured secret. When automatically added on startup using the auto= keyword, it can cause repeated crashes, leading to a denial of service.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libreswan: Missing PreSharedKey for connection can cause crash",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Libreswan may restart repeatedly under certain IKEv2 retransmission scenarios when using PreSharedKeys (authby=secret) if the connection cannot find a matching configured secret. If such a connection is added automatically on startup using the auto= keyword, it can lead to repeated crashes, causing a denial of service. The vulnerability arises when IKEv2 fails to find its PreSharedKey for the AUTH payload in the IKE_AUTH Exchange, resulting in assertion failure and daemon crashes. This vulnerability is triggered by local misconfiguration, and there is no known exploitation by external peers.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
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          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2024-2357"
        },
        {
          "category": "external",
          "summary": "RHBZ#2268952",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2268952"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2024-2357",
          "url": "https://www.cve.org/CVERecord?id=CVE-2024-2357"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2024-2357",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-2357"
        },
        {
          "category": "external",
          "summary": "https://github.com/libreswan/libreswan/commit/cb9e1047d33fde695d63a95854c2bc2470a476c8.patch",
          "url": "https://github.com/libreswan/libreswan/commit/cb9e1047d33fde695d63a95854c2bc2470a476c8.patch"
        },
        {
          "category": "external",
          "summary": "https://libreswan.org/security/CVE-2024-2357",
          "url": "https://libreswan.org/security/CVE-2024-2357"
        }
      ],
      "release_date": "2024-03-11T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2024-04-24T06:53:53+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "AppStream-9.3.0.Z.MAIN:libreswan-0:4.12-1.el9_3.1.aarch64",
            "AppStream-9.3.0.Z.MAIN:libreswan-0:4.12-1.el9_3.1.ppc64le",
            "AppStream-9.3.0.Z.MAIN:libreswan-0:4.12-1.el9_3.1.s390x",
            "AppStream-9.3.0.Z.MAIN:libreswan-0:4.12-1.el9_3.1.src",
            "AppStream-9.3.0.Z.MAIN:libreswan-0:4.12-1.el9_3.1.x86_64",
            "AppStream-9.3.0.Z.MAIN:libreswan-debuginfo-0:4.12-1.el9_3.1.aarch64",
            "AppStream-9.3.0.Z.MAIN:libreswan-debuginfo-0:4.12-1.el9_3.1.ppc64le",
            "AppStream-9.3.0.Z.MAIN:libreswan-debuginfo-0:4.12-1.el9_3.1.s390x",
            "AppStream-9.3.0.Z.MAIN:libreswan-debuginfo-0:4.12-1.el9_3.1.x86_64",
            "AppStream-9.3.0.Z.MAIN:libreswan-debugsource-0:4.12-1.el9_3.1.aarch64",
            "AppStream-9.3.0.Z.MAIN:libreswan-debugsource-0:4.12-1.el9_3.1.ppc64le",
            "AppStream-9.3.0.Z.MAIN:libreswan-debugsource-0:4.12-1.el9_3.1.s390x",
            "AppStream-9.3.0.Z.MAIN:libreswan-debugsource-0:4.12-1.el9_3.1.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2024:2033"
        },
        {
          "category": "workaround",
          "details": "As a workaround to prevent the misconfiguration from causing the crash, place an unguessable long random \"catch-all\" secret in /etc/ipsec.secrets, for example, using the following command:\n\necho -e \"# CVE-2024-2357 workaround\\n: PSK \\\"$(openssl rand -hex 32)\\\"\" \u003e\u003e /etc/ipsec.secrets\n\nThis will ensure a PSK secret is always found, but it will always be wrong, and thus authentication will still properly fail.",
          "product_ids": [
            "AppStream-9.3.0.Z.MAIN:libreswan-0:4.12-1.el9_3.1.aarch64",
            "AppStream-9.3.0.Z.MAIN:libreswan-0:4.12-1.el9_3.1.ppc64le",
            "AppStream-9.3.0.Z.MAIN:libreswan-0:4.12-1.el9_3.1.s390x",
            "AppStream-9.3.0.Z.MAIN:libreswan-0:4.12-1.el9_3.1.src",
            "AppStream-9.3.0.Z.MAIN:libreswan-0:4.12-1.el9_3.1.x86_64",
            "AppStream-9.3.0.Z.MAIN:libreswan-debuginfo-0:4.12-1.el9_3.1.aarch64",
            "AppStream-9.3.0.Z.MAIN:libreswan-debuginfo-0:4.12-1.el9_3.1.ppc64le",
            "AppStream-9.3.0.Z.MAIN:libreswan-debuginfo-0:4.12-1.el9_3.1.s390x",
            "AppStream-9.3.0.Z.MAIN:libreswan-debuginfo-0:4.12-1.el9_3.1.x86_64",
            "AppStream-9.3.0.Z.MAIN:libreswan-debugsource-0:4.12-1.el9_3.1.aarch64",
            "AppStream-9.3.0.Z.MAIN:libreswan-debugsource-0:4.12-1.el9_3.1.ppc64le",
            "AppStream-9.3.0.Z.MAIN:libreswan-debugsource-0:4.12-1.el9_3.1.s390x",
            "AppStream-9.3.0.Z.MAIN:libreswan-debugsource-0:4.12-1.el9_3.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.0,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "AppStream-9.3.0.Z.MAIN:libreswan-0:4.12-1.el9_3.1.aarch64",
            "AppStream-9.3.0.Z.MAIN:libreswan-0:4.12-1.el9_3.1.ppc64le",
            "AppStream-9.3.0.Z.MAIN:libreswan-0:4.12-1.el9_3.1.s390x",
            "AppStream-9.3.0.Z.MAIN:libreswan-0:4.12-1.el9_3.1.src",
            "AppStream-9.3.0.Z.MAIN:libreswan-0:4.12-1.el9_3.1.x86_64",
            "AppStream-9.3.0.Z.MAIN:libreswan-debuginfo-0:4.12-1.el9_3.1.aarch64",
            "AppStream-9.3.0.Z.MAIN:libreswan-debuginfo-0:4.12-1.el9_3.1.ppc64le",
            "AppStream-9.3.0.Z.MAIN:libreswan-debuginfo-0:4.12-1.el9_3.1.s390x",
            "AppStream-9.3.0.Z.MAIN:libreswan-debuginfo-0:4.12-1.el9_3.1.x86_64",
            "AppStream-9.3.0.Z.MAIN:libreswan-debugsource-0:4.12-1.el9_3.1.aarch64",
            "AppStream-9.3.0.Z.MAIN:libreswan-debugsource-0:4.12-1.el9_3.1.ppc64le",
            "AppStream-9.3.0.Z.MAIN:libreswan-debugsource-0:4.12-1.el9_3.1.s390x",
            "AppStream-9.3.0.Z.MAIN:libreswan-debugsource-0:4.12-1.el9_3.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "libreswan: Missing PreSharedKey for connection can cause crash"
    }
  ]
}

cve-2024-2357

Vulnerability from cvelistv5

Published

2024-03-11 19:39

Modified

2024-11-20 17:25

Severity ?

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

The Libreswan Project was notified of an issue causing libreswan to restart under some IKEv2 retransmit scenarios when a connection is configured to use PreSharedKeys (authby=secret) and the connection cannot find a matching configured secret. When such a connection is automatically added on startup using the auto= keyword, it can cause repeated crashes leading to a Denial of Service.

References

▼	URL	Tags
	https://libreswan.org/security/CVE-2024-2357	vendor-advisory
	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EJZJYFHKBIJ4ZK5GAWWFFR3AKJS6O5JX/
	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HEM46ALKF7NG6CAUKZ7KQERVOHWQIQKY/
	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TVQ7MZY6LFFGRWAJNTKKN2VSEFS2VPAR/

Impacted products

Vendor

Product

Version

▼

The Libreswan Project (www.libreswan.org)

libreswan

Version: 4.2 ≤ 4.12

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 6.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-2357",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-03-12T16:21:48.798359Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "description": "CWE-noinfo Not enough information",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-20T17:25:31.624Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-01T19:11:53.507Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
          {
            "name": "CVE-2024-2357",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://libreswan.org/security/CVE-2024-2357"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EJZJYFHKBIJ4ZK5GAWWFFR3AKJS6O5JX/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HEM46ALKF7NG6CAUKZ7KQERVOHWQIQKY/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TVQ7MZY6LFFGRWAJNTKKN2VSEFS2VPAR/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "libreswan",
          "vendor": "The Libreswan Project (www.libreswan.org)",
          "versions": [
            {
              "lessThanOrEqual": "4.1",
              "status": "unaffected",
              "version": "3.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.12",
              "status": "affected",
              "version": "4.2",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.0"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "value": "The vulnerability can only be triggered for connections with ikev2=yes and authby=secret"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Andrew Vaughn"
        }
      ],
      "datePublic": "2024-03-11T14:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The Libreswan Project was notified of an issue causing libreswan to restart under some IKEv2 retransmit scenarios when a connection is configured to use PreSharedKeys (authby=secret) and the connection cannot find a matching configured secret. When such a connection is automatically added on startup using the auto= keyword, it can cause repeated crashes leading to a Denial of Service."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "IKEv2 misconfiguration can cause libreswan to abort and restart",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-03-11T19:39:03.280Z",
        "orgId": "d42dc95b-23f1-4e06-9076-20753a0fb0df",
        "shortName": "libreswan"
      },
      "references": [
        {
          "name": "CVE-2024-2357",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://libreswan.org/security/CVE-2024-2357"
        },
        {
          "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EJZJYFHKBIJ4ZK5GAWWFFR3AKJS6O5JX/"
        },
        {
          "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HEM46ALKF7NG6CAUKZ7KQERVOHWQIQKY/"
        },
        {
          "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TVQ7MZY6LFFGRWAJNTKKN2VSEFS2VPAR/"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "This issue is fixed in 4.13, 5.0 and all later versions."
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2024-02-08T00:00:00.000Z",
          "value": "Issue reported publicly via https://github.com/libreswan/libreswan/issues/1609"
        },
        {
          "lang": "en",
          "time": "2024-02-14T00:00:00.000Z",
          "value": "Workaround posted in the github issue"
        },
        {
          "lang": "en",
          "time": "2024-02-15T00:00:00.000Z",
          "value": "Fix published (as issue was already public via githb issue)"
        },
        {
          "lang": "en",
          "time": "2024-03-09T00:00:00.000Z",
          "value": "Advanced notice given to support customers and distributions"
        },
        {
          "lang": "en",
          "time": "2024-03-11T00:00:00.000Z",
          "value": "CVE-2024-2357 published"
        }
      ],
      "title": "IKEv2 misconfiguration can cause libreswan to abort and restart",
      "workarounds": [
        {
          "lang": "en",
          "value": "As a workaround, one can place an unguessable long random default secret in /etc/ipsec.secrets, for example using the following command:\n\n echo -e \"# CVE-2024-2357 workaround\n: PSK \"$(openssl rand -hex 32)\"\" \u003e\u003e /etc/ipsec.secrets\n\nThis will ensure a PSK secret is always found, but it will always be wrong, and thus authentication will still properly fail."
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d42dc95b-23f1-4e06-9076-20753a0fb0df",
    "assignerShortName": "libreswan",
    "cveId": "CVE-2024-2357",
    "datePublished": "2024-03-11T19:39:03.280Z",
    "dateReserved": "2024-03-09T22:24:12.530Z",
    "dateUpdated": "2024-11-20T17:25:31.624Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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