Vulnerability-Lookup

CNVD-2020-19539

Vulnerability from cnvd - Published: 2020-03-26

Title

Red Hat newlib libc library代码问题漏洞（CNVD-2020-19539）

Description

Red Hat是企业开源解决方案的全球领先提供商，使用社区支持的方法来提供高性能的Linux，云，容器和Kubernetes技术。 newlib libc library 3.3.0之前版本中的‘__mdiff()’函数存在代码问题漏洞，该漏洞源于网络系统或产品的代码开发过程中存在设计或实现不当的问题。攻击者可利用该漏洞访问将触发空指针取消引用错误。

Severity

中

Patch Name

Red Hat newlib libc library代码问题漏洞（CNVD-2020-19539）的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，详情请关注厂商主页： https://www.redhat.com/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2019-14878

Impacted products

Name
Red Hat newlib libc library <3.3.0

Show details on source website

JSON

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CVE-2019-14878 (GCVE-0-2019-14878)

Vulnerability from cvelistv5 – Published: 2020-03-19 15:04 – Updated: 2024-08-05 00:26

Summary

In the __d2b function of the newlib libc library, all versions prior to 3.3.0 (see newlib/libc/stdlib/mprec.c), Balloc is used to allocate a big integer, however no check is performed to verify if the allocation succeeded or not. Accessing _x will trigger a null pointer dereference bug in case of a memory allocation failure.

Severity

6.5 (Medium)


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

CWE

CWE-476

Assigner

redhat redhat root Scorecard

References

1 reference

URL	Tags
https://census-labs.com/news/2020/01/31/multiple-…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
Red Hat	newlib	Affected: all newlib versions prior to 3.3.0

Show details on NVD website

JSON

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            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
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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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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-2020-19539

CVE-2019-14878 (GCVE-0-2019-14878)

Tags

Sightings

Nomenclature

Related by attack behaviour