CVE-2021-20197
CVSS V2 Low 3.3
CVSS V3 Medium 6.3
Description
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.
Overview
- CVE ID
- CVE-2021-20197
- Assigner
- secalert@redhat.com
- Vulnerability Status
- Modified
- Published Version
- 2021-03-26T17:15:12
- Last Modified Date
- 2023-02-12T22:15:16
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:gnu:binutils:*:*:*:*:*:*:*:* | 1 | OR | 2.35 | |
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:broadcom:brocade_fabric_operating_system_firmware:-:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:L/AC:M/Au:N/C:P/I:P/A:N
- Access Vector
- LOCAL
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 3.3
- Severity
- LOW
- Exploitability Score
- 3.4
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
- Attack Vector
- LOCAL
- Attack Compatibility
- HIGH
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 6.3
- Base Severity
- MEDIUM
- Exploitability Score
- 1
- Impact Score
- 5.2
References
| Reference URL | Reference Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2021:4364 | |
| https://access.redhat.com/security/cve/CVE-2021-20197 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1913743 | Issue Tracking Patch Third Party Advisory |
| https://security.gentoo.org/glsa/202208-30 | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210528-0009/ | Third Party Advisory |
| https://sourceware.org/bugzilla/show_bug.cgi?id=26945 | Issue Tracking Patch Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-20197 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20197 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:14:26 | Added to TrackCVE | |||
| 2022-12-06 00:31:10 | 2021-03-26T17:15Z | 2021-03-26T17:15:12 | CVE Published Date | updated |
| 2022-12-06 00:31:10 | 2022-09-30T13:04:04 | CVE Modified Date | updated | |
| 2022-12-06 00:31:10 | Analyzed | Vulnerability Status | updated | |
| 2022-12-06 00:31:15 | References | updated | ||
| 2023-02-02 23:11:48 | 2023-02-02T21:20:51 | CVE Modified Date | updated | |
| 2023-02-02 23:11:48 | Analyzed | Modified | Vulnerability Status | updated |
| 2023-02-02 23:11:49 | 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. | There is an open race window when writing output in the following utilities in GNU binutils1: ar, objcopy, strip, and 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. | Description | updated |
| 2023-02-02 23:11:49 | References | updated | ||
| 2023-02-12 23:11:42 | 2023-02-12T22:15:16 | CVE Modified Date | updated | |
| 2023-02-12 23:11:42 | Weakness Enumeration | update | ||
| 2023-02-12 23:11:42 | There is an open race window when writing output in the following utilities in GNU binutils1: ar, objcopy, strip, and 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. | 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. | Description | updated |