CVE-2019-14855

2020-03-2000:00:00

ubuntu.com

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

0.002 Low

EPSS

Percentile

61.4%

JSON

A flaw was found in the way certificate signatures could be forged using
collisions found in the SHA-1 algorithm. An attacker could use this
weakness to create forged certificate signatures. This issue affects GnuPG
versions before 2.2.18.

Bugs

<https://dev.gnupg.org/T4755>

Notes

Author	Note
mdeslaur	in master, gnupg disables SHA-1 signatures completely. In the 2.2 branch, it disables SHA-1 signatures after a certain date only.
rodrigo-zaiden	As of 2022-03-22 there is no upstream patch available for gnupg 1.4 series. Backporting from 2.2 would be too risky.

OSVersionArchitecturePackageVersionFilename
ubuntu14.04noarchgnupg< anyUNKNOWN
ubuntu16.04noarchgnupg< anyUNKNOWN
ubuntu18.04noarchgnupg1< anyUNKNOWN
ubuntu20.04noarchgnupg1< anyUNKNOWN
ubuntu22.04noarchgnupg1< anyUNKNOWN
ubuntu23.10noarchgnupg1< anyUNKNOWN
ubuntu24.04noarchgnupg1< anyUNKNOWN
ubuntu18.04noarchgnupg2< 2.2.4-1ubuntu1.3UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	14.04	noarch	gnupg	< any	UNKNOWN
ubuntu	16.04	noarch	gnupg	< any	UNKNOWN
ubuntu	18.04	noarch	gnupg1	< any	UNKNOWN
ubuntu	20.04	noarch	gnupg1	< any	UNKNOWN
ubuntu	22.04	noarch	gnupg1	< any	UNKNOWN
ubuntu	23.10	noarch	gnupg1	< any	UNKNOWN
ubuntu	24.04	noarch	gnupg1	< any	UNKNOWN
ubuntu	18.04	noarch	gnupg2	< 2.2.4-1ubuntu1.3	UNKNOWN