Vulnerability CVE-2020-27743
Published: 2020-10-26   Modified: 2020-10-27

Description:
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.

Type:

CWE-330

 (Use of Insufficiently Random Values)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Pam tacplus project -> Pam tacplus 

 References:
https://github.com/kravietz/pam_tacplus/pull/163
https://tools.ietf.org/html/rfc8907
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