Vulnerability-Lookup

GSD-2021-31352

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

An Information Exposure vulnerability in Juniper Networks SRC Series devices configured for NETCONF over SSH permits the negotiation of weak ciphers, which could allow a remote attacker to obtain sensitive information. A remote attacker with read and write access to network data could exploit this vulnerability to display plaintext bits from a block of ciphertext and obtain sensitive information. This issue affects all Juniper Networks SRC Series versions prior to 4.13.0-R6.

Aliases

CVE-2021-31352

Aliases

CVE-2021-31352

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2021-31352",
    "description": "An Information Exposure vulnerability in Juniper Networks SRC Series devices configured for NETCONF over SSH permits the negotiation of weak ciphers, which could allow a remote attacker to obtain sensitive information. A remote attacker with read and write access to network data could exploit this vulnerability to display plaintext bits from a block of ciphertext and obtain sensitive information. This issue affects all Juniper Networks SRC Series versions prior to 4.13.0-R6.",
    "id": "GSD-2021-31352"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
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        "CVE-2021-31352"
      ],
      "details": "An Information Exposure vulnerability in Juniper Networks SRC Series devices configured for NETCONF over SSH permits the negotiation of weak ciphers, which could allow a remote attacker to obtain sensitive information. A remote attacker with read and write access to network data could exploit this vulnerability to display plaintext bits from a block of ciphertext and obtain sensitive information. This issue affects all Juniper Networks SRC Series versions prior to 4.13.0-R6.",
      "id": "GSD-2021-31352",
      "modified": "2023-12-13T01:23:13.648245Z",
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    }
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      },
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          "confidentialityImpact": "LOW",
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            "url": "https://kb.juniper.net/JSA11217"
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          "value": "A hotfix has been created to resolve this issue.  Contact Juniper Networks Technical Support to request the hotfix.\n\nWeak ciphers are now disabled by default. Only the following ciphers and key-exchange (KEX) algorithms are now enabled by default:\n\n\u2022 Ciphers: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com\n\u2022 KEX Algorithms: curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1\n\nNote: After upgrading to a fixed release, any manually configured weak ciphers or KEX algorithms for NETCONF will be retained.  Administrators should reset their cipher configuration by typing:\n  root@src# delete system services netconf ssh\n  root@src# commit\n  Stopping NETCONF/SSH:\n  commit complete.\n\n  root@src# set system services netconf ssh\n"
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              }
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            }
          ]
        },
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          "impactScore": 2.9,
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        }
      },
      "lastModifiedDate": "2022-10-27T13:05Z",
      "publishedDate": "2021-10-19T19:15Z"
    }
  }
}

CVE-2021-31352 (GCVE-0-2021-31352)

Vulnerability from cvelistv5 – Published: 2021-10-19 18:16 – Updated: 2024-09-16 19:20

Title

SRC Series: NETCONF over SSH allows negotiation of weak ciphers

Summary

Severity

5.3 (Medium)


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

CWE

CWE-200 - Information Exposure

Assigner

juniper mitre root

References

1 reference

URL	Tags
https://kb.juniper.net/JSA11217	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
Juniper Networks	SRC Series	Affected: unspecified , < 4.13.0-R6 (custom)

Date Public

2021-10-13 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T22:55:53.552Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            "url": "https://kb.juniper.net/JSA11217"
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          "vendor": "Juniper Networks",
          "versions": [
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              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
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        }
      ],
      "configurations": [
        {
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        }
      ],
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          "lang": "en",
          "value": "An Information Exposure vulnerability in Juniper Networks SRC Series devices configured for NETCONF over SSH permits the negotiation of weak ciphers, which could allow a remote attacker to obtain sensitive information. A remote attacker with read and write access to network data could exploit this vulnerability to display plaintext bits from a block of ciphertext and obtain sensitive information. This issue affects all Juniper Networks SRC Series versions prior to 4.13.0-R6."
        }
      ],
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            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
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        {
          "lang": "en",
          "value": "A hotfix has been created to resolve this issue.  Contact Juniper Networks Technical Support to request the hotfix.\n\nWeak ciphers are now disabled by default. Only the following ciphers and key-exchange (KEX) algorithms are now enabled by default:\n\n\u2022 Ciphers: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com\n\u2022 KEX Algorithms: curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1\n\nNote: After upgrading to a fixed release, any manually configured weak ciphers or KEX algorithms for NETCONF will be retained.  Administrators should reset their cipher configuration by typing:\n  root@src# delete system services netconf ssh\n  root@src# commit\n  Stopping NETCONF/SSH:\n  commit complete.\n\n  root@src# set system services netconf ssh"
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    "datePublished": "2021-10-19T18:16:33.308Z",
    "dateReserved": "2021-04-15T00:00:00.000Z",
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    "state": "PUBLISHED"
  },
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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.

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.