Vulnerability-Lookup

CNVD-2020-03731

Vulnerability from cnvd - Published: 2020-02-05

Title

libxml2内存泄露漏洞

Description

libxml2是一款使用C语言编写的用于解析XML文档的函数库。 libxml2 2.9.10之前版本中的parser.c文件的xmlParseBalancedChunkMemoryRecover存在内存泄露漏洞。目前没有详细漏洞细节提供。

Severity

中

Patch Name

libxml2内存泄露漏洞的补丁

Patch Description

libxml2是一款使用C语言编写的用于解析XML文档的函数库。 libxml2 2.9.10之前版本中的parser.c文件的xmlParseBalancedChunkMemoryRecover存在内存泄露漏洞。目前没有详细漏洞细节提供。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

厂商已发布了漏洞修复程序，请及时关注更新： https://gitlab.gnome.org/GNOME/libxml2/commit/5a02583c7e683896d84878bd90641d8d9b0d0549

Reference

https://nvd.nist.gov/vuln/detail/CVE-2019-19956

Impacted products

Name
libxml2 libxml2 <2.9.10

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-19956"
    }
  },
  "description": "libxml2\u662f\u4e00\u6b3e\u4f7f\u7528C\u8bed\u8a00\u7f16\u5199\u7684\u7528\u4e8e\u89e3\u6790XML\u6587\u6863\u7684\u51fd\u6570\u5e93\u3002\n\nlibxml2 2.9.10\u4e4b\u524d\u7248\u672c\u4e2d\u7684parser.c\u6587\u4ef6\u7684xmlParseBalancedChunkMemoryRecover\u5b58\u5728\u5185\u5b58\u6cc4\u9732\u6f0f\u6d1e\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://gitlab.gnome.org/GNOME/libxml2/commit/5a02583c7e683896d84878bd90641d8d9b0d0549",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-03731",
  "openTime": "2020-02-05",
  "patchDescription": "libxml2\u662f\u4e00\u6b3e\u4f7f\u7528C\u8bed\u8a00\u7f16\u5199\u7684\u7528\u4e8e\u89e3\u6790XML\u6587\u6863\u7684\u51fd\u6570\u5e93\u3002\r\n\r\nlibxml2 2.9.10\u4e4b\u524d\u7248\u672c\u4e2d\u7684parser.c\u6587\u4ef6\u7684xmlParseBalancedChunkMemoryRecover\u5b58\u5728\u5185\u5b58\u6cc4\u9732\u6f0f\u6d1e\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "libxml2\u5185\u5b58\u6cc4\u9732\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "libxml2 libxml2 \u003c2.9.10"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2019-19956",
  "serverity": "\u4e2d",
  "submitTime": "2019-12-24",
  "title": "libxml2\u5185\u5b58\u6cc4\u9732\u6f0f\u6d1e"
}

CVE-2019-19956 (GCVE-0-2019-19956)

Vulnerability from cvelistv5 – Published: 2019-12-24 15:12 – Updated: 2025-12-03 18:29

Summary

xmlParseBalancedChunkMemoryRecover in parser.c in libxml2 before 2.9.10 has a memory leak related to newDoc->oldNs.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-12-03 18:29 UTC

CWE

n/a
CWE-772 - Missing Release of Resource after Effective Lifetime

Assigner

mitre mitre root

References

12 references

URL	Tags
https://lists.debian.org/debian-lts-announce/2019…	mailing-listx_refsource_MLIST
https://usn.ubuntu.com/4274-1/	vendor-advisoryx_refsource_UBUNTU
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://www.oracle.com/security-alerts/cpujul2020.html	x_refsource_MISC
https://gitlab.gnome.org/GNOME/libxml2/commit/5a0…	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2020011…	x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST
https://cert-portal.siemens.com/productcert/pdf/s…	x_refsource_CONFIRM
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-08	x_refsource_CONFIRM

Show details on NVD website

JSON

To clipboard

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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.

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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CNVD-2020-03731

CVE-2019-19956 (GCVE-0-2019-19956)

Tags

Sightings

Nomenclature

Related by attack behaviour