Vulnerability Details : CVE-2021-3569
A stack corruption bug was found in libtpms in versions before 0.7.2 and before 0.8.0 while decrypting data using RSA. This flaw could result in a SIGBUS (bad memory access) and termination of swtpm. The highest threat from this vulnerability is to system availability.
Vulnerability category: OverflowMemory Corruption
Products affected by CVE-2021-3569
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*
- cpe:2.3:a:libtpms_project:libtpms:*:*:*:*:*:*:*:*
- cpe:2.3:a:libtpms_project:libtpms:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-3569
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 10 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-3569
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:N/A:P |
3.9
|
2.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2021-3569
-
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.Assigned by: secalert@redhat.com (Secondary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-3569
-
https://bugzilla.redhat.com/show_bug.cgi?id=1964358
1964358 – (CVE-2021-3569) CVE-2021-3569 libtpms: stack corruption bug in RSA decryptionIssue Tracking;Patch;Third Party Advisory
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