CVE-2020-27743

libtac in pam_tacplus through 1.5.1 lacks a check for a failure of RAND_bytes()/RAND_pseudo_bytes().

Published 26 Oct 2020Modified 17 Jun 2026CWE 330

In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD, Photon OS.

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.

Affected packages and fixed versions

Source	Package	Fixed in
Photon OS 1.0	pam_tacplus	1.6.1-1.ph1
Photon OS 2.0	pam_tacplus	1.6.1-1.ph2
Photon OS 3.0	pam_tacplus	1.6.1-1.ph3

References

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