VDB-157810 · CVE-2020-13132 · GCVE-0-2020-13132

Yubico libykpiv up to 2.1.0 Error lib/util.c ykpiv_util_generate_key denial of service

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.2	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Yubico libykpiv up to 2.1.0. This issue affects the function ykpiv_util_generate_key in the library lib/util.c of the component Error Handler. Executing a manipulation can lead to denial of service. This vulnerability is registered as CVE-2020-13132. The physical device can be targeted for the attack. No exploit is available.

Detailsinfo

A vulnerability has been found in Yubico libykpiv up to 2.1.0 and classified as problematic. This vulnerability affects the function ykpiv_util_generate_key in the library lib/util.c of the component Error Handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:

An issue was discovered in Yubico libykpiv before 2.1.0. An attacker can trigger an incorrect free() in the ykpiv_util_generate_key() function in lib/util.c through incorrect error handling code. This could be used to cause a denial of service attack.

The weakness was published 07/09/2020 (Website). The advisory is available at yubico.com. This vulnerability was named CVE-2020-13132 since 05/18/2020. Local access is required to approach this attack. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Similar entry is available at VDB-157809. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Yubico

Name

libykpiv

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.2
VulDB Meta Temp Score: 3.2

VulDB Base Score: 2.1
VulDB Temp Score: 2.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/18/2020 🔍
07/09/2020 +52 days 🔍
07/10/2020 +1 days 🔍
10/29/2020 +111 days 🔍

Sourcesinfo

Advisory: yubico.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-13132 (🔍)
GCVE (CVE): GCVE-0-2020-13132
GCVE (VulDB): GCVE-100-157810
See also: 🔍

Entryinfo

Created: 07/10/2020 08:49
Updated: 10/29/2020 10:11
Changes: 07/10/2020 08:49 (40), 07/10/2020 08:54 (11), 10/29/2020 10:08 (1), 10/29/2020 10:11 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.