Vulnerability-Lookup

OESA-2022-1501 (CVE-2021-42574)

Vulnerability from osv_openeuler – Published: 2022-01-22 11:04 – Updated: 2026-08-06 11:04 – Source website

Summary

binutils security update

Details

The GNU Binutils are a collection of binary tools. The main ones are: ld - the GNU linker. as - the GNU assembler. addr2line - Converts addresses into filenames and line numbers. ar - A utility for creating, modifying and extracting from archives. c++filt - Filter to demangle encoded C++ symbols. dlltool - Creates files for building and using DLLs. gold - A new, faster, ELF only linker, still in beta test. gprof - Displays profiling information. nlmconv - Converts object code into an NLM. nm - Lists symbols from object files. objcopy - Copies and translates object files. objdump - Displays information from object files. ranlib - Generates an index to the contents of an archive. readelf - Displays information from any ELF format object file. size - Lists the section sizes of an object or archive file. strings - Lists printable strings from files. trip - Discards symbols. windmc - A Windows compatible message compiler. windres - A compiler for Windows resource files.

Security Fix(es):

Severity

8.3 (High)


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

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-42574	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "binutils-2.34-19.oe1.aarch64.rpm",
          "binutils-debuginfo-2.34-19.oe1.aarch64.rpm",
          "binutils-help-2.34-19.oe1.aarch64.rpm",
          "binutils-debugsource-2.34-19.oe1.aarch64.rpm",
          "binutils-devel-2.34-19.oe1.aarch64.rpm"
        ],
        "src": [
          "binutils-2.34-19.oe1.src.rpm"
        ],
        "x86_64": [
          "binutils-debugsource-2.34-19.oe1.x86_64.rpm",
          "binutils-help-2.34-19.oe1.x86_64.rpm",
          "binutils-devel-2.34-19.oe1.x86_64.rpm",
          "binutils-debuginfo-2.34-19.oe1.x86_64.rpm",
          "binutils-2.34-19.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "binutils",
        "purl": "pkg:rpm/openEuler/binutils\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.34-19.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "binutils-2.34-19.oe1.aarch64.rpm",
          "binutils-devel-2.34-19.oe1.aarch64.rpm",
          "binutils-help-2.34-19.oe1.aarch64.rpm",
          "binutils-debuginfo-2.34-19.oe1.aarch64.rpm",
          "binutils-debugsource-2.34-19.oe1.aarch64.rpm"
        ],
        "src": [
          "binutils-2.34-19.oe1.src.rpm"
        ],
        "x86_64": [
          "binutils-devel-2.34-19.oe1.x86_64.rpm",
          "binutils-debuginfo-2.34-19.oe1.x86_64.rpm",
          "binutils-debugsource-2.34-19.oe1.x86_64.rpm",
          "binutils-help-2.34-19.oe1.x86_64.rpm",
          "binutils-2.34-19.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP2",
        "name": "binutils",
        "purl": "pkg:rpm/openEuler/binutils\u0026distro=openEuler-20.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.34-19.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "binutils-debuginfo-2.34-19.oe1.aarch64.rpm",
          "binutils-debugsource-2.34-19.oe1.aarch64.rpm",
          "binutils-2.34-19.oe1.aarch64.rpm",
          "binutils-help-2.34-19.oe1.aarch64.rpm",
          "binutils-devel-2.34-19.oe1.aarch64.rpm"
        ],
        "src": [
          "binutils-2.34-19.oe1.src.rpm"
        ],
        "x86_64": [
          "binutils-debugsource-2.34-19.oe1.x86_64.rpm",
          "binutils-help-2.34-19.oe1.x86_64.rpm",
          "binutils-2.34-19.oe1.x86_64.rpm",
          "binutils-devel-2.34-19.oe1.x86_64.rpm",
          "binutils-debuginfo-2.34-19.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP3",
        "name": "binutils",
        "purl": "pkg:rpm/openEuler/binutils\u0026distro=openEuler-20.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.34-19.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "The GNU Binutils are a collection of binary tools. The main ones are: ld - the GNU linker. as - the GNU assembler. addr2line - Converts addresses into filenames and line numbers. ar - A utility for creating, modifying and extracting from archives. c++filt - Filter to demangle encoded C++ symbols. dlltool - Creates files for building and using DLLs. gold - A new, faster, ELF only linker, still in beta test. gprof - Displays profiling information. nlmconv - Converts object code into an NLM. nm - Lists symbols from object files. objcopy - Copies and translates object files. objdump - Displays information from object files. ranlib - Generates an index to the contents of an archive. readelf - Displays information from any ELF format object file. size - Lists the section sizes of an object or archive file. strings - Lists printable strings from files. trip - Discards symbols. windmc - A Windows compatible message compiler. windres - A compiler for Windows resource files.\r\n\r\nSecurity Fix(es):\r\n\r\nAn issue was discovered in the Bidirectional Algorithm in the Unicode Specification through 14.0. It permits the visual reordering of characters via control sequences, which can be used to craft source code that renders different logic than the logical ordering of tokens ingested by compilers and interpreters. Adversaries can leverage this to encode source code for compilers accepting Unicode such that targeted vulnerabilities are introduced invisibly to human reviewers.(CVE-2021-42574)",
  "id": "OESA-2022-1501",
  "modified": "2026-08-06T11:04:46Z",
  "published": "2022-01-22T11:04:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1501"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-42574"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "binutils security update",
  "upstream": [
    "CVE-2021-42574"
  ]
}

CVE-2021-42574 (GCVE-0-2021-42574)

Vulnerability from cvelistv5 – Published: 2021-11-01 00:00 – Updated: 2024-08-04 03:38 Disputed

Summary

An issue was discovered in the Bidirectional Algorithm in the Unicode Specification through 14.0. It permits the visual reordering of characters via control sequences, which can be used to craft source code that renders different logic than the logical ordering of tokens ingested by compilers and interpreters. Adversaries can leverage this to encode source code for compilers accepting Unicode such that targeted vulnerabilities are introduced invisibly to human reviewers. NOTE: the Unicode Consortium offers the following alternative approach to presenting this concern. An issue is noted in the nature of international text that can affect applications that implement support for The Unicode Standard and the Unicode Bidirectional Algorithm (all versions). Due to text display behavior when text includes left-to-right and right-to-left characters, the visual order of tokens may be different from their logical order. Additionally, control characters needed to fully support the requirements of bidirectional text can further obfuscate the logical order of tokens. Unless mitigated, an adversary could craft source code such that the ordering of tokens perceived by human reviewers does not match what will be processed by a compiler/interpreter/etc. The Unicode Consortium has documented this class of vulnerability in its document, Unicode Technical Report #36, Unicode Security Considerations. The Unicode Consortium also provides guidance on mitigations for this class of issues in Unicode Technical Standard #39, Unicode Security Mechanisms, and in Unicode Standard Annex #31, Unicode Identifier and Pattern Syntax. Also, the BIDI specification allows applications to tailor the implementation in ways that can mitigate misleading visual reordering in program text; see HL4 in Unicode Standard Annex #9, Unicode Bidirectional Algorithm.

Severity

No CVSS data available.

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-06-11 15:16 UTC

CWE

Assigner

mitre mitre root

References

18 references

URL	Tags
http://www.unicode.org/versions/Unicode14.0.0/
https://trojansource.codes
http://www.openwall.com/lists/oss-security/2021/11/01/1	mailing-list
http://www.openwall.com/lists/oss-security/2021/11/01/4	mailing-list
http://www.openwall.com/lists/oss-security/2021/11/01/6	mailing-list
http://www.openwall.com/lists/oss-security/2021/11/01/5	mailing-list
http://www.openwall.com/lists/oss-security/2021/1…	mailing-list
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://www.kb.cert.org/vuls/id/999008	third-party-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://www.scyon.nl/post/trojans-in-your-source-code
https://www.unicode.org/reports/tr36/
https://www.unicode.org/reports/tr39/
https://www.unicode.org/reports/tr31/
https://www.unicode.org/reports/tr9/tr9-44.html#HL4
https://www.starwindsoftware.com/security/sw-2022…
https://security.gentoo.org/glsa/202210-09	vendor-advisory

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.

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

OESA-2022-1501 (CVE-2021-42574)

CVE-2021-42574 (GCVE-0-2021-42574)

Tags

Sightings

Nomenclature

Related by attack behaviour