CVE-2021-35938
CVSS V2 None
CVSS V3 High 7.8
Description
A symbolic link issue was found in rpm. It occurs when rpm sets the desired permissions and credentials after installing a file. A local unprivileged user could use this flaw to exchange the original file with a symbolic link to a security-critical file and escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Overview
- CVE ID
- CVE-2021-35938
- Assigner
- secalert@redhat.com
- Vulnerability Status
- Analyzed
- Published Version
- 2022-08-25T20:15:09
- Last Modified Date
- 2022-11-29T18:06:15
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:rpm:rpm:*:*:*:*:*:*:*:* | 1 | OR | 4.18.0 | |
| cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- LOCAL
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 7.8
- Base Severity
- HIGH
- Exploitability Score
- 1.8
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2021-35938 | Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1964114 | Issue Tracking Vendor Advisory |
| https://bugzilla.suse.com/show_bug.cgi?id=1157880 | Exploit Issue Tracking Third Party Advisory |
| https://github.com/rpm-software-management/rpm/commit/25a435e90844ea98fe5eb7bef22c1aecf3a9c033 | Patch Third Party Advisory |
| https://github.com/rpm-software-management/rpm/pull/1919 | Patch Third Party Advisory |
| https://rpm.org/wiki/Releases/4.18.0 | Release Notes |
| https://security.gentoo.org/glsa/202210-22 |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-35938 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-35938 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-08-25 21:00:16 | Added to TrackCVE | |||
| 2022-12-06 14:34:59 | 2022-11-29T18:06:15 | CVE Modified Date | updated | |
| 2022-12-06 14:34:59 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |