Vulnerability Details : CVE-2020-27743
libtac in pam_tacplus through 1.5.1 lacks a check for a failure of RAND_bytes()/RAND_pseudo_bytes(). This could lead to use of a non-random/predictable session_id.
Products affected by CVE-2020-27743
- cpe:2.3:a:pam_tacplus_project:pam_tacplus:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-27743
0.59%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 67 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-27743
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2020-27743
-
The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-27743
-
https://tools.ietf.org/html/rfc8907
RFC 8907 - The Terminal Access Controller Access-Control System Plus (TACACS+) ProtocolTechnical Description;Third Party Advisory
-
https://github.com/kravietz/pam_tacplus/pull/163
Check for failure of OpenSSL RAND_[pseudo_]bytes by deastoe · Pull Request #163 · kravietz/pam_tacplus · GitHubThird Party Advisory
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