CVE-2021-20197

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Source
https://cve.org/CVERecord?id=CVE-2021-20197
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-20197.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-20197
Downstream
Related
Published
2021-03-26T17:15:12.920Z
Modified
2026-08-18T04:02:07.383949009Z
Severity
  • 6.3 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
[none]
Details

There is an open race window when writing output in the following utilities in GNU binutils version 2.35 and earlier:ar, objcopy, strip, ranlib. When these utilities are run as a privileged user (presumably as part of a script updating binaries across different users), an unprivileged user can trick these utilities into getting ownership of arbitrary files through a symlink.

Database specific 
{
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "8.0"
                },
                {
                    "last_affected": "8.0"
                }
            ],
            "source": "CPE_STRING",
            "cpes": [
                "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "redhat:enterprise_linux"
        }
    ]
}
References

Affected packages

Git / sourceware.org/git/binutils-gdb.git

Affected ranges

Type
GIT
Repo
https://sourceware.org/git/binutils-gdb.git
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
2cb5c79dad39dd438fb0f7372ac04cf5aa2a7db7
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "2.35"
        }
    ],
    "cpe": "cpe:2.3:a:gnu:binutils:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-20197.json"