Vulnerability Details : CVE-2021-20266
A flaw was found in RPM's hdrblobInit() in lib/header.c. This flaw allows an attacker who can modify the rpmdb to cause an out-of-bounds read. The highest threat from this vulnerability is to system availability.
Products affected by CVE-2021-20266
- cpe:2.3:a:rpm:rpm:*:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-20266
0.17%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 54 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-20266
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.0
|
MEDIUM | AV:N/AC:L/Au:S/C:N/I:N/A:P |
8.0
|
2.9
|
NIST | |
|
4.9
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |
1.2
|
3.6
|
NIST |
CWE ids for CVE-2021-20266
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: secalert@redhat.com (Primary)
References for CVE-2021-20266
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VHRPNBCRPDJHHQE3MBPSZK4H7X2IM7AC/
[SECURITY] Fedora 34 Update: rpm-4.16.1.3-1.fc34 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1927741
1927741 – (CVE-2021-20266) CVE-2021-20266 rpm: missing length checks in hdrblobInit()Issue Tracking;Patch;Third Party Advisory
-
https://security.gentoo.org/glsa/202107-43
RPM: Multiple vulnerabilities (GLSA 202107-43) — Gentoo securityThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TMGXO3W6DHPO62GJ4VVF5DEUX5DRUR5K/
[SECURITY] Fedora 33 Update: rpm-4.16.1.3-1.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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