github - ghsa-xjhh-w3rj-8mxm

ghsa-xjhh-w3rj-8mxm

Vulnerability from github

Published

2022-07-07 00:00

Modified

2022-07-16 00:00

Severity ?

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

Details

A crafted 16-bit grayscale PNG image may lead to a out-of-bounds write in the heap area. An attacker may take advantage of that to cause heap data corruption or eventually arbitrary code execution and circumvent secure boot protections. This issue has a high complexity to be exploited as an attacker needs to perform some triage over the heap layout to achieve signifcant results, also the values written into the memory are repeated three times in a row making difficult to produce valid payloads. This flaw affects grub2 versions prior grub-2.12.

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2021-3695"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-07-06T16:15:00Z",
    "severity": "MODERATE"
  },
  "details": "A crafted 16-bit grayscale PNG image may lead to a out-of-bounds write in the heap area. An attacker may take advantage of that to cause heap data corruption or eventually arbitrary code execution and circumvent secure boot protections. This issue has a high complexity to be exploited as an attacker needs to perform some triage over the heap layout to achieve signifcant results, also the values written into the memory are repeated three times in a row making difficult to produce valid payloads. This flaw affects grub2 versions prior grub-2.12.",
  "id": "GHSA-xjhh-w3rj-8mxm",
  "modified": "2022-07-16T00:00:20Z",
  "published": "2022-07-07T00:00:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3695"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1991685"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202209-12"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20220930-0001"
    }
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  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ]
}

cve-2021-3695

Vulnerability from cvelistv5

Published

2022-07-06 15:06

Modified

2024-08-03 17:01

Severity ?

Summary

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=1991685	x_refsource_MISC
	https://security.gentoo.org/glsa/202209-12	vendor-advisory, x_refsource_GENTOO
	https://security.netapp.com/advisory/ntap-20220930-0001/	x_refsource_CONFIRM

Impacted products

Vendor

Product

Version

▼

n/a

grub2

Version: grub-2.06

Show details on NVD website

JSON

To clipboard

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          },
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            "url": "https://security.netapp.com/advisory/ntap-20220930-0001/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "grub2",
          "vendor": "n/a",
          "versions": [
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        }
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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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