Vulnerability CVE-2018-19608

Vulnerability Name:

CVE-2018-19608 (CCN-153896)

Assigned:

2018-11-30

Published:

2018-11-30

Updated:

2020-08-24

Summary:

Arm Mbed TLS before 2.14.1, before 2.7.8, and before 2.1.17 allows a local unprivileged attacker to recover the plaintext of RSA decryption, which is used in RSA-without-(EC)DH(E) cipher suites.

CVSS v3 Severity:

4.7 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N)
4.1 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): High Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): None Availibility (A): None

5.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
4.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): None Availibility (A): None

CVSS v2 Severity:

1.9 Low (CVSS v2 Vector: AV:L/AC:M/Au:N/C:P/I:N/A:N)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Medium Authentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): None Availibility (A): None

4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:N/A:N)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Complete Integrity (I): None Availibility (A): None

Vulnerability Type:

CWE-269

Vulnerability Consequences:

Obtain Information

References:

Source: MISC
Type: Third Party Advisory
http://cat.eyalro.net/

Source: MITRE
Type: CNA
CVE-2018-19608

Source: XF
Type: UNKNOWN
armmbedtls-cve201819608-info-disc(153896)

Source: CONFIRM
Type: Third Party Advisory
https://tls.mbed.org/tech-updates/releases/mbedtls-2.14.1-2.7.8-and-2.1.17-released

Source: CCN
Type: Mbed TLS Security Advisory 2018-03
Local timing attack on RSA decryption

Source: CONFIRM
Type: Third Party Advisory
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2018-03

Vulnerable Configuration:

Configuration 1:

cpe:/a:arm:mbed_tls:*:*:*:*:*:*:*:* (Version >= 2.1.0 and < 2.1.17)

OR cpe:/a:arm:mbed_tls:*:*:*:*:*:*:*:* (Version >= 2.7.0 and < 2.7.8)

OR cpe:/a:arm:mbed_tls:*:*:*:*:*:*:*:* (Version >= 2.14.0 and < 2.14.1)

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:112688	P	libmbedcrypto7-2.27.0-1.2 on GA media (Moderate)	2022-01-17
oval:org.opensuse.security:def:106165	P	libmbedcrypto7-2.27.0-1.2 on GA media (Moderate)	2021-10-01

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