Vulnerability-Lookup

GHSA-J42J-7596-MCR4

Vulnerability from github – Published: 2022-05-24 17:17 – Updated: 2024-03-21 03:33

Details

gss_mech_free in net/sunrpc/auth_gss/gss_mech_switch.c in the rpcsec_gss_krb5 implementation in the Linux kernel through 5.6.10 lacks certain domain_release calls, leading to a memory leak.

Severity

5.5 (Medium)


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

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  "affected": [],
  "aliases": [
    "CVE-2020-12656"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401",
      "CWE-772"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-05-05T06:15:00Z",
    "severity": "LOW"
  },
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  "id": "GHSA-j42j-7596-mcr4",
  "modified": "2024-03-21T03:33:55Z",
  "published": "2022-05-24T17:17:11Z",
  "references": [
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12656"
    },
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      "url": "https://bugzilla.kernel.org/show_bug.cgi?id=206651"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4483-1"
    },
    {
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      "url": "https://usn.ubuntu.com/4485-1"
    },
    {
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      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html"
    },
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      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2020-12656 (GCVE-0-2020-12656)

Vulnerability from cvelistv5 – Published: 2020-05-05 05:42 – Updated: 2024-08-04 12:04 Disputed

Summary

gss_mech_free in net/sunrpc/auth_gss/gss_mech_switch.c in the rpcsec_gss_krb5 implementation in the Linux kernel through 5.6.10 lacks certain domain_release calls, leading to a memory leak. Note: This was disputed with the assertion that the issue does not grant any access not already available. It is a problem that on unloading a specific kernel module some memory is leaked, but loading kernel modules is a privileged operation. A user could also write a kernel module to consume any amount of memory they like and load that replicating the effect of this bug

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-05-01 14:55 UTC

CWE

Assigner

mitre mitre root

References

5 references

URL	Tags
https://bugzilla.kernel.org/show_bug.cgi?id=206651	x_refsource_MISC
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://usn.ubuntu.com/4483-1/	vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4485-1/	vendor-advisoryx_refsource_UBUNTU

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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.

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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.