PT-2020-16796 · Unknown · Pam Tacplus

Deastoe · Published 2020-10-26 · Updated 2020-11-02 · CVE-2020-27743

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions pam tacplus versions through 1.5.1

Description The issue is related to a lack of check for a failure of RAND bytes()/RAND pseudo bytes() in libtac, which could lead to the use of a non-random or predictable session id.

Recommendations For versions through 1.5.1, update to a version that includes a fix for this issue, as using a non-random session id could pose a security risk. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Use of Insufficiently Random Values

Weakness Enumeration

CWE-330

Related Identifiers

CVE-2020-27743

Affected Products

Pam Tacplus

References · 8

• https://ubuntu.com/security/CVE-2020-27743 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-27743 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-27743 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-27743 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-27743 · Security Note
• https://github.com/kravietz/pam_tacplus/pull/163 · Note
• https://tools.ietf.org/html/rfc8907 · Note
• https://t.me/cibsecurity/15595 · Telegram Post