Vulnerability-Lookup

CNVD-2021-37478

Vulnerability from cnvd - Published: 2021-05-27

Title

libxml2资源管理错误漏洞

Description

libxml2是开源的一个用来解析XML文档的函数库。它用C语言写成，并且能为多种语言所调用，例如C语言，C++，XSH。 libxml2 2.9.11之前版本存在资源管理错误漏洞。攻击者可借助特制文件利用该漏洞触发释放后重用。

Severity

中

Patch Name

libxml2资源管理错误漏洞的补丁

Patch Description

libxml2是开源的一个用来解析XML文档的函数库。它用C语言写成，并且能为多种语言所调用，例如C语言，C++，XSH。 libxml2 2.9.11之前版本存在资源管理错误漏洞。攻击者可借助特制文件利用该漏洞触发释放后重用。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://bugzilla.redhat.com/show_bug.cgi?id=1954242

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-3518

Impacted products

Name
libxml2 libxml2 <2.9.11

Show details on source website

JSON

To clipboard

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CVE-2021-3518 (GCVE-0-2021-3518)

Vulnerability from cvelistv5 – Published: 2021-05-18 11:20 – Updated: 2024-08-03 17:01

Summary

There's a flaw in libxml2 in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by an application linked with libxml2 could trigger a use-after-free. The greatest impact from this flaw is to confidentiality, integrity, and availability.

Severity

No CVSS data available.

CWE

CWE-416

Assigner

redhat redhat root Scorecard

References

19 references

URL	Tags
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://bugzilla.redhat.com/show_bug.cgi?id=1954242	x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.apache.org/thread.html/rf4c02775860…	mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r58af02e294b…	mailing-listx_refsource_MLIST
https://security.gentoo.org/glsa/202107-05	vendor-advisoryx_refsource_GENTOO
https://security.netapp.com/advisory/ntap-2021062…	x_refsource_CONFIRM
http://seclists.org/fulldisclosure/2021/Jul/58	mailing-listx_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Jul/54	mailing-listx_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Jul/55	mailing-listx_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Jul/59	mailing-listx_refsource_FULLDISC
https://www.oracle.com/security-alerts/cpuoct2021.html	x_refsource_MISC
https://support.apple.com/kb/HT212605	x_refsource_CONFIRM
https://support.apple.com/kb/HT212602	x_refsource_CONFIRM
https://support.apple.com/kb/HT212601	x_refsource_CONFIRM
https://support.apple.com/kb/HT212604	x_refsource_CONFIRM
https://www.oracle.com/security-alerts/cpuapr2022.html	x_refsource_MISC
https://www.oracle.com/security-alerts/cpujul2022.html	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	libxml2	Affected: libxml2 2.9.11

Show details on NVD website

JSON

To clipboard

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              "name": "20210723 APPLE-SA-2021-07-21-1 iOS 14.7 and iPadOS 14.7",
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              "url": "http://seclists.org/fulldisclosure/2021/Jul/54"
            },
            {
              "name": "20210723 APPLE-SA-2021-07-21-2 macOS Big Sur 11.5",
              "refsource": "FULLDISC",
              "url": "http://seclists.org/fulldisclosure/2021/Jul/55"
            },
            {
              "name": "20210723 APPLE-SA-2021-07-21-6 tvOS 14.7",
              "refsource": "FULLDISC",
              "url": "http://seclists.org/fulldisclosure/2021/Jul/59"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuoct2021.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
            },
            {
              "name": "https://support.apple.com/kb/HT212605",
              "refsource": "CONFIRM",
              "url": "https://support.apple.com/kb/HT212605"
            },
            {
              "name": "https://support.apple.com/kb/HT212602",
              "refsource": "CONFIRM",
              "url": "https://support.apple.com/kb/HT212602"
            },
            {
              "name": "https://support.apple.com/kb/HT212601",
              "refsource": "CONFIRM",
              "url": "https://support.apple.com/kb/HT212601"
            },
            {
              "name": "https://support.apple.com/kb/HT212604",
              "refsource": "CONFIRM",
              "url": "https://support.apple.com/kb/HT212604"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuapr2022.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpujul2022.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpujul2022.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2021-3518",
    "datePublished": "2021-05-18T11:20:24.000Z",
    "dateReserved": "2021-04-27T00:00:00.000Z",
    "dateUpdated": "2024-08-03T17:01:07.460Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

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.

Action not permitted

CNVD-2021-37478

CVE-2021-3518 (GCVE-0-2021-3518)

Tags

Sightings

Nomenclature

Related by attack behaviour