Improper Authentication The advisory has been revoked - it doesn't affect any version of package refpolicy  (opens in a new tab)


Threat Intelligence

Exploit Maturity
Not Defined
EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-REFPOLICY-609015
  • published31 Aug 2020
  • disclosed24 Aug 2020

Introduced: 24 Aug 2020

CVE-2020-24612  (opens in a new tab)
CWE-287  (opens in a new tab)

Amendment

The Debian security team deemed this advisory irrelevant for Debian:unstable.

NVD Description

Note: Versions mentioned in the description apply only to the upstream refpolicy package and not the refpolicy package as distributed by Debian.

An issue was discovered in the selinux-policy (aka Reference Policy) package 3.14 through 2020-08-24 because the .config/Yubico directory is mishandled. Consequently, when SELinux is in enforced mode, pam-u2f is not allowed to read the user's U2F configuration file. If configured with the nouserok option (the default when configured by the authselect tool), and that file cannot be read, the second factor is disabled. An attacker with only the knowledge of the password can then log in, bypassing 2FA.