Vulnerability-Lookup

CNVD-2021-01283

Vulnerability from cnvd - Published: 2021-01-07

Title

GNU Binutils堆缓冲区溢出漏洞（CNVD-2021-01283）

Description

GNU Binutils是一组用于创建和管理二进制程序、对象文件、库、配置文件数据及程序集源代码的编程工具。 GNU Binutils 2.35.1中使用的二进制文件描述符（BFD）库中的libbfd.c中的bfd_getl_signed_32存在堆缓冲区溢出漏洞。该漏洞源于elf.c中的_bfd_elf_slurp_secondary_reloc_section不验证sh_entsize。目前没有详细的漏洞细节提供。

Severity

中

Patch Name

GNU Binutils堆缓冲区溢出漏洞（CNVD-2021-01283）的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=8642dafaef21aa6747cec01df1977e9c52eb4679

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-35448

Impacted products

Name
GNU Binutils 2.35.1

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-35448",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-35448"
    }
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  "description": "GNU Binutils\u662f\u4e00\u7ec4\u7528\u4e8e\u521b\u5efa\u548c\u7ba1\u7406\u4e8c\u8fdb\u5236\u7a0b\u5e8f\u3001\u5bf9\u8c61\u6587\u4ef6\u3001\u5e93\u3001\u914d\u7f6e\u6587\u4ef6\u6570\u636e\u53ca\u7a0b\u5e8f\u96c6\u6e90\u4ee3\u7801\u7684\u7f16\u7a0b\u5de5\u5177\u3002\n\nGNU Binutils 2.35.1\u4e2d\u4f7f\u7528\u7684\u4e8c\u8fdb\u5236\u6587\u4ef6\u63cf\u8ff0\u7b26\uff08BFD\uff09\u5e93\u4e2d\u7684libbfd.c\u4e2d\u7684bfd_getl_signed_32\u5b58\u5728\u5806\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8eelf.c\u4e2d\u7684_bfd_elf_slurp_secondary_reloc_section\u4e0d\u9a8c\u8bc1sh_entsize\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\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://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=8642dafaef21aa6747cec01df1977e9c52eb4679",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-01283",
  "openTime": "2021-01-07",
  "patchDescription": "GNU Binutils\u662f\u4e00\u7ec4\u7528\u4e8e\u521b\u5efa\u548c\u7ba1\u7406\u4e8c\u8fdb\u5236\u7a0b\u5e8f\u3001\u5bf9\u8c61\u6587\u4ef6\u3001\u5e93\u3001\u914d\u7f6e\u6587\u4ef6\u6570\u636e\u53ca\u7a0b\u5e8f\u96c6\u6e90\u4ee3\u7801\u7684\u7f16\u7a0b\u5de5\u5177\u3002\r\n\r\nGNU Binutils 2.35.1\u4e2d\u4f7f\u7528\u7684\u4e8c\u8fdb\u5236\u6587\u4ef6\u63cf\u8ff0\u7b26\uff08BFD\uff09\u5e93\u4e2d\u7684libbfd.c\u4e2d\u7684bfd_getl_signed_32\u5b58\u5728\u5806\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8eelf.c\u4e2d\u7684_bfd_elf_slurp_secondary_reloc_section\u4e0d\u9a8c\u8bc1sh_entsize\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\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": "GNU Binutils\u5806\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2021-01283\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "GNU Binutils 2.35.1"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-35448",
  "serverity": "\u4e2d",
  "submitTime": "2020-12-28",
  "title": "GNU Binutils\u5806\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2021-01283\uff09"
}

CVE-2020-35448 (GCVE-0-2020-35448)

Vulnerability from cvelistv5 – Published: 2020-12-27 03:38 – Updated: 2024-08-04 17:02

Summary

An issue was discovered in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.35.1. A heap-based buffer over-read can occur in bfd_getl_signed_32 in libbfd.c because sh_entsize is not validated in _bfd_elf_slurp_secondary_reloc_section in elf.c.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

4 references

URL	Tags
https://sourceware.org/bugzilla/show_bug.cgi?id=26574	x_refsource_MISC
https://sourceware.org/git/gitweb.cgi?p=binutils-…	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2021012…	x_refsource_CONFIRM
https://security.gentoo.org/glsa/202107-24	vendor-advisoryx_refsource_GENTOO

Show details on NVD website

JSON

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          },
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            ],
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          },
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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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Action not permitted

CNVD-2021-01283

CVE-2020-35448 (GCVE-0-2020-35448)

Tags

Sightings

Nomenclature

Related by attack behaviour