CVE-2019-14859

2019-10-1400:00:00

ubuntu.com

9.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

6.4 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.002 Low

EPSS

Percentile

61.3%

JSON

A flaw was found in all python-ecdsa versions before 0.13.3, where it did
not correctly verify whether signatures used DER encoding. Without this
verification, a malformed signature could be accepted, making the signature
malleable. Without proper verification, an attacker could use a malleable
signature to create false transactions.

Bugs

<https://github.com/warner/python-ecdsa/issues/114>

Notes

Author	Note
mdeslaur	included in CVE-2019-14853 commits

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchpython-ecdsa< 0.13-2ubuntu0.18.04.1UNKNOWN
ubuntu19.04noarchpython-ecdsa< 0.13-3ubuntu0.1UNKNOWN
ubuntu19.10noarchpython-ecdsa< 0.13.2-2ubuntu0.1UNKNOWN
ubuntu16.04noarchpython-ecdsa< 0.13-2ubuntu0.16.04.1UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	python-ecdsa	< 0.13-2ubuntu0.18.04.1	UNKNOWN
ubuntu	19.04	noarch	python-ecdsa	< 0.13-3ubuntu0.1	UNKNOWN
ubuntu	19.10	noarch	python-ecdsa	< 0.13.2-2ubuntu0.1	UNKNOWN
ubuntu	16.04	noarch	python-ecdsa	< 0.13-2ubuntu0.16.04.1	UNKNOWN