Vulnerability CVE-2018-0497

Vulnerability Name:

CVE-2018-0497 (CCN-148081)

Assigned:

2017-11-27

Published:

2018-07-25

Updated:

2020-02-10

Summary:

ARM mbed TLS before 2.12.0, before 2.7.5, and before 2.1.14 allows remote attackers to achieve partial plaintext recovery (for a CBC based ciphersuite) via a timing-based side-channel attack. This vulnerability exists because of an incorrect fix (with a wrong SHA-384 calculation) for CVE-2013-0169.

CVSS v3 Severity:

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

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

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

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

CVSS v2 Severity:

4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N)

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

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

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

Vulnerability Type:

CWE-noinfo

Vulnerability Consequences:

Obtain Information

References:

Source: MITRE
Type: CNA
CVE-2018-0497

Source: XF
Type: UNKNOWN
armmbed-cve20180497-info-disc(148081)

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20180925 [SECURITY] [DLA 1518-1] polarssl security update

Source: CCN
Type: Mbed TLS Security Advisory 2018-02
Remote plaintext recovery on use of CBC based ciphersuites through a timing side-channel

Source: CONFIRM
Type: Mitigation, Third Party Advisory
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2018-02

Source: UBUNTU
Type: UNKNOWN
USN-4267-1

Source: DEBIAN
Type: Third Party Advisory
DSA-4296

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2018-0497

Vulnerable Configuration:

Configuration 1:

cpe:/a:arm:mbed_tls:*:*:*:*:*:*:*:* (Version < 2.1.14)

OR cpe:/a:arm:mbed_tls:*:*:*:*:*:*:*:* (Version >= 2.2.0 and < 2.7.5)

OR cpe:/a:arm:mbed_tls:*:*:*:*:*:*:*:* (Version >= 2.8.0 and < 2.12.0)

Configuration 2:

cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*

OR cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.disco:def:201804970000000	V	CVE-2018-0497 on Ubuntu 19.04 (disco) - medium.	2018-07-28
oval:com.ubuntu.bionic:def:20180497000	V	CVE-2018-0497 on Ubuntu 18.04 LTS (bionic) - medium.	2018-07-28
oval:com.ubuntu.cosmic:def:201804970000000	V	CVE-2018-0497 on Ubuntu 18.10 (cosmic) - medium.	2018-07-28
oval:com.ubuntu.cosmic:def:20180497000	V	CVE-2018-0497 on Ubuntu 18.10 (cosmic) - medium.	2018-07-28
oval:com.ubuntu.bionic:def:201804970000000	V	CVE-2018-0497 on Ubuntu 18.04 LTS (bionic) - medium.	2018-07-28
oval:com.ubuntu.trusty:def:20180497000	V	CVE-2018-0497 on Ubuntu 14.04 LTS (trusty) - medium.	2018-07-28
oval:com.ubuntu.xenial:def:201804970000000	V	CVE-2018-0497 on Ubuntu 16.04 LTS (xenial) - medium.	2018-07-28
oval:com.ubuntu.xenial:def:20180497000	V	CVE-2018-0497 on Ubuntu 16.04 LTS (xenial) - medium.	2018-07-28

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