github - ghsa-m5m9-w72w-8c23

ghsa-m5m9-w72w-8c23

Vulnerability from github

Published

2022-05-13 01:09

Modified

2022-05-13 01:09

Severity ?

7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

A buffer overflow was discovered in libxml2 20904-GITv2.9.4-16-g0741801. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer 'buf' of size 'size'. The variable len is assigned strlen(buf). If the content->type is XML_ELEMENT_CONTENT_ELEMENT, then (i) the content->prefix is appended to buf (if it actually fits) whereupon (ii) content->name is written to the buffer. However, the check for whether the content->name actually fits also uses 'len' rather than the updated buffer length strlen(buf). This allows us to write about "size" many bytes beyond the allocated memory. This vulnerability causes programs that use libxml2, such as PHP, to crash.

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2017-9047"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-05-18T06:29:00Z",
    "severity": "HIGH"
  },
  "details": "A buffer overflow was discovered in libxml2 20904-GITv2.9.4-16-g0741801. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer \u0027buf\u0027 of size \u0027size\u0027. The variable len is assigned strlen(buf). If the content-\u003etype is XML_ELEMENT_CONTENT_ELEMENT, then (i) the content-\u003eprefix is appended to buf (if it actually fits) whereupon (ii) content-\u003ename is written to the buffer. However, the check for whether the content-\u003ename actually fits also uses \u0027len\u0027 rather than the updated buffer length strlen(buf). This allows us to write about \"size\" many bytes beyond the allocated memory. This vulnerability causes programs that use libxml2, such as PHP, to crash.",
  "id": "GHSA-m5m9-w72w-8c23",
  "modified": "2022-05-13T01:09:00Z",
  "published": "2022-05-13T01:09:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-9047"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/201711-01"
    },
    {
      "type": "WEB",
      "url": "http://www.debian.org/security/2017/dsa-3952"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2017/05/15/1"
    },
    {
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      "url": "http://www.securityfocus.com/bid/98599"
    }
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  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

cve-2017-9047

Vulnerability from cvelistv5

Published

2017-05-18 06:13

Modified

2024-08-05 16:55

Severity ?

Summary

References

▼	URL	Tags
	http://www.securityfocus.com/bid/98599	vdb-entry, x_refsource_BID
	http://www.debian.org/security/2017/dsa-3952	vendor-advisory, x_refsource_DEBIAN
	https://security.gentoo.org/glsa/201711-01	vendor-advisory, x_refsource_GENTOO
	http://www.openwall.com/lists/oss-security/2017/05/15/1	x_refsource_MISC
	https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E	mailing-list, x_refsource_MLIST
	https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E	mailing-list, x_refsource_MLIST

Impacted products

▼	Vendor	Product
	n/a	n/a

Show details on NVD website

JSON

To clipboard

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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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