CVE-2018-14780

Severity Score

4.6

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An out-of-bounds read issue was discovered in the Yubico-Piv 1.5.0 smartcard driver. The file lib/ykpiv.c contains the following code in the function `_ykpiv_fetch_object()`: {% highlight c %} if(sw == SW_SUCCESS) { size_t outlen; int offs = _ykpiv_get_length(data + 1, &outlen); if(offs == 0) { return YKPIV_SIZE_ERROR; } memmove(data, data + 1 + offs, outlen); *len = outlen; return YKPIV_OK; } else { return YKPIV_GENERIC_ERROR; } {% endhighlight %} -- in the end, a `memmove()` occurs with a length retrieved from APDU data. This length is not checked for whether it is outside of the APDU data retrieved. Therefore the `memmove()` could copy bytes behind the allocated data buffer into this buffer.

Se ha descubierto una vulnerabilidad de lectura fuera de límites en el controlador de tarjetas inteligentes de Yubico-Piv 1.5.0. El archivo lib/ykpiv.c contiene el siguiente código en la función "_ykpiv_fetch_object()": {% highlight c %} if(sw == SW_SUCCESS) { size_t outlen; int offs = _ykpiv_get_length(data + 1, outlen); if(offs == 0) { return YKPIV_SIZE_ERROR; } memmove(data, data + 1 + offs, outlen); *len = outlen; return YKPIV_OK; } else { return YKPIV_GENERIC_ERROR; } {% endhighlight %} -- Al final, ocurre un "memmove()" con una longitud recuperada de los datos APDU. No se comprueba si la longitud es de fuera de los datos APDU recuperados. Por lo tanto, "memmove()" podría copiar bytes de detrás del búfer de datos asignado en este búfer.

*Credits: N/A

Attack Vector

Physical

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-08-01 CVE Reserved
2018-08-14 CVE Published
2023-08-09 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-125: Out-of-bounds Read

CAPEC

References (4)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2018/08/14/2	Mailing List
https://www.x41-dsec.de/lab/advisories/x41-2018-001-Yubico-Piv	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://usn.ubuntu.com/4276-1	2020-02-25
https://www.yubico.com/support/security-advisories/ysa-2018-03	2020-02-25

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Yubico Search vendor "Yubico"		Piv Manager Search vendor "Yubico" for product "Piv Manager"				< 1.4.2 Search vendor "Yubico" for product "Piv Manager" and version " < 1.4.2"		-		Affected
Yubico Search vendor "Yubico"		Piv Manager Search vendor "Yubico" for product "Piv Manager"				1.4.2 Search vendor "Yubico" for product "Piv Manager" and version "1.4.2"		-		Affected
Yubico Search vendor "Yubico"		Piv Manager Search vendor "Yubico" for product "Piv Manager"				1.4.2b Search vendor "Yubico" for product "Piv Manager" and version "1.4.2b"		-		Affected
Yubico Search vendor "Yubico"		Piv Manager Search vendor "Yubico" for product "Piv Manager"				1.4.2c Search vendor "Yubico" for product "Piv Manager" and version "1.4.2c"		-		Affected
Yubico Search vendor "Yubico"		Piv Manager Search vendor "Yubico" for product "Piv Manager"				1.4.2d Search vendor "Yubico" for product "Piv Manager" and version "1.4.2d"		-		Affected
Yubico Search vendor "Yubico"		Piv Manager Search vendor "Yubico" for product "Piv Manager"				1.4.2e Search vendor "Yubico" for product "Piv Manager" and version "1.4.2e"		-		Affected
Yubico Search vendor "Yubico"		Piv Manager Search vendor "Yubico" for product "Piv Manager"				1.4.2f Search vendor "Yubico" for product "Piv Manager" and version "1.4.2f"		-		Affected
Yubico Search vendor "Yubico"		Piv Manager Search vendor "Yubico" for product "Piv Manager"				1.4.2g Search vendor "Yubico" for product "Piv Manager" and version "1.4.2g"		-		Affected
Yubico Search vendor "Yubico"		Piv Tool Search vendor "Yubico" for product "Piv Tool"				< 1.6.0 Search vendor "Yubico" for product "Piv Tool" and version " < 1.6.0"		-		Affected
Yubico Search vendor "Yubico"		Smart Card Minidriver Search vendor "Yubico" for product "Smart Card Minidriver"				<= 3.7.3.160 Search vendor "Yubico" for product "Smart Card Minidriver" and version " <= 3.7.3.160"		-		Affected