CVE-2019-17362

Severity Score

9.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

In LibTomCrypt through 1.18.2, the der_decode_utf8_string function (in der_decode_utf8_string.c) does not properly detect certain invalid UTF-8 sequences. This allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) or read information from other memory locations via carefully crafted DER-encoded data.

En LibTomCrypt versiones hasta 1.18.2, la función der_decode_utf8_string (en el archivo der_decode_utf8_string.c) no detecta apropiadamente determinadas secuencias UTF-8 no válidas. Esto permite a atacantes dependiendo del contexto causar una denegación de servicio (lectura y bloqueo fuera de límites) o leer información desde otras ubicaciones de memoria por medio de datos codificados con DER cuidadosamente diseñados.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

Poc

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2019-10-09 CVE Reserved
2019-10-09 CVE Published
2023-12-14 EPSS Updated
2024-11-15 CVE Updated
2024-11-15 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-125: Out-of-bounds Read

CAPEC

References (7)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2019/10/msg00010.html	Mailing List

URL	Date	SRC
https://github.com/libtom/libtomcrypt/issues/507	2024-11-15

URL	Date	SRC
https://github.com/libtom/libtomcrypt/pull/508	2023-12-14

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00020.html	2023-12-14
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00041.html	2023-12-14
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/47YP5SXQ4RY6KMTK2HI5ZZR244XKRMCZ	2023-12-14
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YU5OMCY3PX54YVI4FMNDEENHDJZJ3RJW	2023-12-14

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Libtom Search vendor "Libtom"		Libtomcrypt Search vendor "Libtom" for product "Libtomcrypt"				<= 1.18.2 Search vendor "Libtom" for product "Libtomcrypt" and version " <= 1.18.2"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected