Vulnerability-Lookup

OESA-2021-1210 (CVE-2021-29468)

Vulnerability from osv_openeuler – Published: 2021-06-07 11:04 – Updated: 2026-08-06 11:04 – Source website

Summary

git security update

Details

Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency. Git is easy to learn and has a tiny footprint with lightning fast performance. It outclasses SCM tools like Subversion, CVS, Perforce, and ClearCase with features like cheap local branching, convenient staging areas, and multiple workflows.

Security Fix(es):

Cygwin Git is a patch set for the git command line tool for the cygwin environment. A specially crafted repository that contains symbolic links as well as files with backslash characters in the file name may cause just-checked out code to be executed while checking out a repository using Git on Cygwin. The problem will be patched in the Cygwin Git v2.31.1-2 release. At time of writing, the vulnerability is present in the upstream Git source code; any Cygwin user who compiles Git for themselves from upstream sources should manually apply a patch to mitigate the vulnerability. As mitigation users should not clone or pull from repositories from untrusted sources. CVE-2019-1354 was an equivalent vulnerability in Git for Visual Studio.(CVE-2021-29468)

Severity

8.8 (High)


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

References

URL

Type

	https://openeuler.org/en/security/safety-bulletin…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-29468	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "git-debuginfo-2.27.0-4.oe1.aarch64.rpm",
          "git-debugsource-2.27.0-4.oe1.aarch64.rpm",
          "git-daemon-2.27.0-4.oe1.aarch64.rpm",
          "git-2.27.0-4.oe1.aarch64.rpm"
        ],
        "noarch": [
          "perl-Git-SVN-2.27.0-4.oe1.noarch.rpm",
          "git-svn-2.27.0-4.oe1.noarch.rpm",
          "git-help-2.27.0-4.oe1.noarch.rpm",
          "perl-Git-2.27.0-4.oe1.noarch.rpm",
          "git-gui-2.27.0-4.oe1.noarch.rpm",
          "git-web-2.27.0-4.oe1.noarch.rpm",
          "gitk-2.27.0-4.oe1.noarch.rpm",
          "git-email-2.27.0-4.oe1.noarch.rpm"
        ],
        "src": [
          "git-2.27.0-4.oe1.src.rpm"
        ],
        "x86_64": [
          "git-2.27.0-4.oe1.x86_64.rpm",
          "git-daemon-2.27.0-4.oe1.x86_64.rpm",
          "git-debuginfo-2.27.0-4.oe1.x86_64.rpm",
          "git-debugsource-2.27.0-4.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "git",
        "purl": "pkg:rpm/openEuler/git\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.27.0-4.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency.\nGit is easy to learn and has a tiny footprint with lightning fast performance. It outclasses SCM tools like Subversion, CVS, Perforce, and ClearCase with features like cheap local branching, convenient staging areas, and multiple workflows.\r\n\r\nSecurity Fix(es):\r\n\r\nCygwin Git is a patch set for the git command line tool for the cygwin environment. A specially crafted repository that contains symbolic links as well as files with backslash characters in the file name may cause just-checked out code to be executed while checking out a repository using Git on Cygwin. The problem will be patched in the Cygwin Git v2.31.1-2 release. At time of writing, the vulnerability is present in the upstream Git source code; any Cygwin user who compiles Git for themselves from upstream sources should manually apply a patch to mitigate the vulnerability. As mitigation users should not clone or pull from repositories from untrusted sources. CVE-2019-1354 was an equivalent vulnerability in Git for Visual Studio.(CVE-2021-29468)",
  "id": "OESA-2021-1210",
  "modified": "2026-08-06T11:04:27Z",
  "published": "2021-06-07T11:04:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1210"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-29468"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "git security update",
  "upstream": [
    "CVE-2021-29468"
  ]
}

CVE-2021-29468 (GCVE-0-2021-29468)

Vulnerability from cvelistv5 – Published: 2021-04-29 20:35 – Updated: 2024-08-03 22:11

Title

Arbitrary code execution when checking out an attacker-controlled Git branch

Summary

Severity

8.8 (High)


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

CWE

CWE-20 - Improper Input Validation

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7763 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/me-and/Cygwin-Git/security/adv…	x_refsource_CONFIRM
https://github.com/me-and/Cygwin-Git/blob/main/ch…	x_refsource_MISC
https://cygwin.com/pipermail/cygwin-announce/2021…	x_refsource_MISC
https://lore.kernel.org/git/CA+kUOa=juEdBMVr_gyTK…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
me-and	Cygwin-Git	Affected: < 2.31.1-2

Show details on NVD website

JSON

To clipboard

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        },
        "affects": {
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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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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.

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