CVE-2021-20266
First published: Thu Feb 11 2021(Updated: )
RPM Project RPM is vulnerable to a denial of service, caused by an out-of-bounds read flaw in the hdrblobInit function in lib/header.c. By sending a specially-crafted request, a local authenticated attacker could exploit this vulnerability to cause a denial of service condition.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/rpm | <4.17.0 | 4.17.0 |
| Rpm Rpm | <4.16.1.3 | |
| Fedoraproject Fedora | =33 | |
| Fedoraproject Fedora | =34 | |
| IBM QRadar SIEM | <=7.5.0 GA | |
| IBM QRadar SIEM | <=7.4.3 GA - 7.4.3 FP4 | |
| IBM QRadar SIEM | <=7.3.3 GA - 7.3.3 FP10 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1927741
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TMGXO3W6DHPO62GJ4VVF5DEUX5DRUR5K/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VHRPNBCRPDJHHQE3MBPSZK4H7X2IM7AC/
- https://security.gentoo.org/glsa/202107-43
- https://exchange.xforce.ibmcloud.com/vulnerabilities/201041
- https://www.ibm.com/support/pages/node/6574787 (Advisory)
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=1757364&action=diff
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=1757364&action=edit
- https://github.com/rpm-software-management/rpm/pull/1500
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1938022
- https://github.com/rpm-software-management/rpm/commit/8f4b3c3cab8922a2022b9e47c71f1ecf906077ef
- https://access.redhat.com/errata/RHSA-2021:4489
- 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/TMGXO3W6DHPO62GJ4VVF5DEUX5DRUR5K/
Frequently Asked Questions
What is CVE-2021-20266?
CVE-2021-20266 is a vulnerability in the RPM Project RPM software that allows a local authenticated attacker to cause a denial of service condition.
How can the CVE-2021-20266 vulnerability be exploited?
The CVE-2021-20266 vulnerability can be exploited by sending a specially-crafted request to the hdrblobInit function in lib/header.c.
What is the severity of CVE-2021-20266?
The severity of CVE-2021-20266 is low with a CVSS score of 3.1.
Which software is affected by CVE-2021-20266?
IBM QRadar SIEM versions 7.5.0 GA, 7.4.3 GA - 7.4.3 FP4, and 7.3.3 GA - 7.3.3 FP10 are affected by CVE-2021-20266.
How can I fix the CVE-2021-20266 vulnerability?
To fix the CVE-2021-20266 vulnerability, apply the necessary patches provided by IBM for your specific version of IBM QRadar SIEM.
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