Vulnerability identifier: #VU22620

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-14859

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
python-ecdsa
Universal components / Libraries / Software for developers

Vendor: Brian Warner

Description

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to signature malleability while processing DER-encoded data. A remote attacker can bypass certain security restrictions.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

python-ecdsa: 0.5 - 0.13.2

---

External links
http://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.