CVE-2019-6690

Publication date 21 March 2019

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

python-gnupg 0.4.3 allows context-dependent attackers to trick gnupg to decrypt other ciphertext than intended. To perform the attack, the passphrase to gnupg must be controlled by the adversary and the ciphertext should be trusted. Related to a “CWE-20: Improper Input Validation” issue affecting the affect functionality component.

From the Ubuntu Security Team

It was discovered that python-gnupg incorrectly handled the GPG passphrase. A remote attacker could send a specially crafted passphrase that would allow them to control the output of encryption and decryption operations.

Status

Package Ubuntu Release Status
python-gnupg 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 Ignored end of life, was needed
22.04 LTS jammy
Vulnerable
21.10 impish Ignored end of life
21.04 hirsute Ignored end of life
20.10 groovy Ignored end of life
20.04 LTS focal
Vulnerable
19.10 eoan Ignored end of life
19.04 disco
Fixed 0.4.3-1ubuntu1.19.04.1
18.10 cosmic
Fixed 0.4.1-1ubuntu1.18.10.1
18.04 LTS bionic
Fixed 0.4.1-1ubuntu1.18.04.1
16.04 LTS xenial
14.04 LTS trusty

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Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N