github - ghsa-9xrv-h87m-r2vc

GHSA-9XRV-H87M-R2VC

Vulnerability from github – Published: 2022-05-14 02:00 – Updated: 2022-05-14 02:00

Details

An issue was discovered in Xen through 4.11.x. The logic in oxenstored for handling writes depended on the order of evaluation of expressions making up a tuple. As indicated in section 7.7.3 "Operations on data structures" of the OCaml manual, the order of evaluation of subexpressions is not specified. In practice, different implementations behave differently. Thus, oxenstored may not enforce the configured quota-maxentity. This allows a malicious or buggy guest to write as many xenstore entries as it wishes, causing unbounded memory usage in oxenstored. This can lead to a system-wide DoS.

Severity ?

6.5 (Medium)


                  
                    CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2018-15470"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-08-17T18:29:00Z",
    "severity": "MODERATE"
  },
  "details": "An issue was discovered in Xen through 4.11.x. The logic in oxenstored for handling writes depended on the order of evaluation of expressions making up a tuple. As indicated in section 7.7.3 \"Operations on data structures\" of the OCaml manual, the order of evaluation of subexpressions is not specified. In practice, different implementations behave differently. Thus, oxenstored may not enforce the configured quota-maxentity. This allows a malicious or buggy guest to write as many xenstore entries as it wishes, causing unbounded memory usage in oxenstored. This can lead to a system-wide DoS.",
  "id": "GHSA-9xrv-h87m-r2vc",
  "modified": "2022-05-14T02:00:01Z",
  "published": "2022-05-14T02:00:01Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-15470"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2018/11/msg00013.html"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/201810-06"
    },
    {
      "type": "WEB",
      "url": "http://xenbits.xen.org/xsa/advisory-272.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2018-15470 (GCVE-0-2018-15470)

Vulnerability from cvelistv5 – Published: 2018-08-17 17:00 – Updated: 2024-08-05 09:54

Summary

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://security.gentoo.org/glsa/201810-06	vendor-advisoryx_refsource_GENTOO
	https://lists.debian.org/debian-lts-announce/2018…	mailing-listx_refsource_MLIST
	http://xenbits.xen.org/xsa/advisory-272.html	x_refsource_MISC

Show details on NVD website

JSON

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          },
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            "tags": [
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            ],
            "url": "http://xenbits.xen.org/xsa/advisory-272.html"
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        "title": "CVE Program Container"
      }
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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.

Action not permitted

GHSA-9XRV-H87M-R2VC

CVE-2018-15470 (GCVE-0-2018-15470)

Tags

Sightings

Nomenclature