CVE-2021-35937: Race Condition
First published: Mon May 24 2021(Updated: )
A race condition vulnerability was found in rpm. A local unprivileged user could use this flaw to bypass the checks that were introduced in response to CVE-2017-7500 and CVE-2017-7501, potentially gaining root privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Rpm Rpm | <4.18.0 | |
| Redhat Enterprise Linux | =6.0 | |
| Redhat Enterprise Linux | =7.0 | |
| Redhat Enterprise Linux | =8.0 | |
| Redhat Enterprise Linux | =9.0 | |
| Fedoraproject Fedora | =34 |
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Reference Links
- https://access.redhat.com/security/cve/CVE-2021-35937
- https://bugzilla.redhat.com/show_bug.cgi?id=1964125
- https://rpm.org/wiki/Releases/4.18.0
- https://security.gentoo.org/glsa/202210-22
- https://www.usenix.org/legacy/event/sec05/tech/full_papers/borisov/borisov.pdf
- https://access.redhat.com/security/cve/CVE-2017-7500
- https://access.redhat.com/security/cve/CVE-2017-7501
- https://github.com/rpm-software-management/rpm/commit/f2d3be2a8741234faaa96f5fd05fdfdc75779a79
- https://bugzilla.suse.com/show_bug.cgi?id=1157882
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1977846
- https://access.redhat.com/security/cve/CVE-2021-35938
- https://access.redhat.com/security/cve/CVE-2021-35939
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1964125#c9
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1964125#c10
- https://github.com/rpm-software-management/rpm/pull/1919
- https://access.redhat.com/errata/RHSA-2024:0435
- https://access.redhat.com/errata/RHSA-2024:0463
- https://access.redhat.com/errata/RHSA-2024:0453
- https://access.redhat.com/errata/RHSA-2024:0424
- https://access.redhat.com/errata/RHSA-2024:0582
- https://access.redhat.com/errata/RHSA-2024:0647
Frequently Asked Questions
What is CVE-2021-35937?
CVE-2021-35937 is a race condition vulnerability found in rpm that allows a local unprivileged user to bypass checks and potentially gain root privileges.
How does CVE-2021-35937 impact data confidentiality and integrity?
CVE-2021-35937 poses a high threat to data confidentiality and integrity.
Which software versions are affected by CVE-2021-35937?
The affected software versions include rpm 4.18.0, Redhat Enterprise Linux 6.0, 7.0, 8.0, 9.0, and Fedoraproject Fedora 34.
What is the severity of CVE-2021-35937?
The severity level of CVE-2021-35937 is medium with a CVSS score of 6.4.
How can I fix the CVE-2021-35937 vulnerability?
To fix the CVE-2021-35937 vulnerability, it is recommended to update the affected software to a version that includes the fix or apply applicable patches.
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