CVE-2020-28638

Publication date 13 November 2020

Last updated 26 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

ask_password in Tomb 2.0 through 2.7 returns a warning when pinentry-curses is used and $DISPLAY is non-empty, causing affected users' files to be encrypted with "tomb {W] Detected DISPLAY, but only pinentry-curses is found." as the encryption key.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
tomb	26.04 LTS resolute	Not affected
	25.10 questing	Not affected
	25.04 plucky	Not affected
	24.10 oracular	Not affected
	24.04 LTS noble	Not affected
	23.10 mantic	Not affected
	23.04 lunar	Not affected
	22.10 kinetic	Not affected
	22.04 LTS jammy	Not affected
	21.10 impish	Not affected
	21.04 hirsute	Not affected
	20.10 groovy	Ignored end of life
	20.04 LTS focal	Ignored end of standard support, was needs-triage
	18.04 LTS bionic	Ignored end of standard support, was needs-triage
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release

Notes

sbeattie

Introduced by: https://github.com/dyne/Tomb/commit/bbe9a49ec3f6c709478b1f7873b567e3f36d84a1 (v2.0)

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
tomb	Upstream: 15c894d

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H