CVE-2021-20271
First published: Tue Mar 02 2021(Updated: )
RPM could allow a remote attacker to execute arbitrary code on the system, caused by a flaw in the signature check function. By persuading a victim to open a specially-crafted package file, an attacker could exploit this vulnerability to cause RPM database corruption and execute arbitrary code on the system.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| IBM Cloud Pak for Security (CP4S) | <=1.7.2.0 | |
| IBM Cloud Pak for Security (CP4S) | <=1.7.1.0 | |
| IBM Cloud Pak for Security (CP4S) | <=1.7.0.0 | |
| Rpm Rpm | >=4.15.0<4.15.1.3 | |
| Rpm Rpm | >=4.16.0<4.16.1.3 | |
| Rpm Rpm | =4.15.0-alpha | |
| Rpm Rpm | =4.15.0-beta1 | |
| Rpm Rpm | =4.15.0-rc1 | |
| Rpm Rpm | =4.16.0-alpha | |
| Rpm Rpm | =4.16.0-beta2 | |
| Rpm Rpm | =4.16.0-beta3 | |
| Rpm Rpm | =4.16.0-rc1 | |
| Redhat Enterprise Linux | =8.0 | |
| Fedoraproject Fedora | =32 | |
| Fedoraproject Fedora | =33 | |
| Fedoraproject Fedora | =34 | |
| Starwindsoftware Starwind Virtual San | =v8-build14398 |
Remedy
https://github.com/rpm-software-management/rpm/commit/d6a86b5e69e46cc283b1e06c92343319beb42e21
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Reference Links
- https://exchange.xforce.ibmcloud.com/vulnerabilities/198961
- https://www.ibm.com/support/pages/node/6493729 (Advisory)
- https://bugzilla.redhat.com/show_bug.cgi?id=1934125
- https://github.com/rpm-software-management/rpm/commit/d6a86b5e69e46cc283b1e06c92343319beb42e21
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMGXO3W6DHPO62GJ4VVF5DEUX5DRUR5K/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHRPNBCRPDJHHQE3MBPSZK4H7X2IM7AC/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YILPBTPSBRYL4POBI3F4YUSVPSOQNJBY/
- https://security.gentoo.org/glsa/202107-43
- https://www.starwindsoftware.com/security/sw-20220805-0002/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1938027
- https://access.redhat.com/errata/RHSA-2021:2574
- https://access.redhat.com/security/cve/cve-2021-20271
- https://access.redhat.com/errata/RHSA-2021:2791
- https://access.redhat.com/errata/RHSA-2021:4771
- https://access.redhat.com/errata/RHSA-2021:4785
- https://access.redhat.com/errata/RHSA-2021:4975
Frequently Asked Questions
What is CVE-2021-20271?
CVE-2021-20271 is a vulnerability in RPM that could allow a remote attacker to execute arbitrary code on the system.
What is the severity of CVE-2021-20271?
CVE-2021-20271 has a severity rating of high with a CVSS score of 7.
Which software products are affected by CVE-2021-20271?
Cloud Pak for Security (CP4S) versions 1.7.2.0, 1.7.1.0, and 1.7.0.0 are affected by CVE-2021-20271. Additionally, RPM versions 4.15.0 to 4.15.1.3 and 4.16.0 to 4.16.1.3 are also affected.
How can an attacker exploit CVE-2021-20271?
An attacker can exploit CVE-2021-20271 by convincing a victim to install a seemingly verifiable package with a modified signature header, which can lead to RPM database corruption and code execution.
How can I fix CVE-2021-20271?
To fix CVE-2021-20271, it is recommended to update to a patched version of RPM or apply the relevant security patch provided by the vendor.
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