CVE-2021-28374
The Debian courier-authlib package before 0.71.1-2 for Courier Authentication Library creates a /run/courier/authdaemon directory with weak permissions, allowing an attacker to read user information.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.27%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The Debian courier-authlib package before 0.71.1-2 for Courier Authentication Library creates a /run/courier/authdaemon directory with weak permissions, allowing an attacker to read user information. This may include a cleartext password in some configurations. In general, it includes the user's existence, uid and gids, home and/or Maildir directory, quota, and some type of password information (such as a hash).
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.27% probability · 68th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-732
- Affected
- debian/courier-authlib · debian/debian linux
- Source
- cve@mitre.org
References
- https://bugs.debian.org/984810Mailing List, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2021/04/msg00011.htmlMailing List, Third Party Advisory
- https://bugs.debian.org/984810Mailing List, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2021/04/msg00011.htmlMailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.