CWE
119
Advisory Published

USN-4267-1: ARM mbed TLS vulnerabilities

First published: Wed Feb 05 2020(Updated: )

It was discovered that mbedtls has a bounds-check bypass through an integer overflow that can be used by an attacked to execute arbitrary code or cause a denial of service. (CVE-2017-18187) It was discovered that mbedtls has a vulnerability where an attacker could execute arbitrary code or cause a denial of service (buffer overflow) via a crafted certificate chain that is mishandled during RSASSA-PSS signature verification within a TLS or DTLS session. (CVE-2018-0487) It was discovered that mbedtls has a vulnerability where an attacker could execute arbitrary code or cause a denial of service (heap corruption) via a crafted application packet within a TLS or DTLS session. (CVE-2018-0488) It was discovered that mbedtls has a vulnerability that allows remote attackers to achieve partial plaintext recovery (for a CBC based ciphersuite) via a timing-based side-channel attack. (CVE-2018-0497) It was discovered that mbedtls has a vulnerability that allows local users to achieve partial plaintext recovery (for a CBC based ciphersuite) via a cache-based side-channel attack. (CVE-2018-0498)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/libmbedcrypto0<2.2.1-2ubuntu0.3
2.2.1-2ubuntu0.3
=16.04
All of
ubuntu/libmbedtls10<2.2.1-2ubuntu0.3
2.2.1-2ubuntu0.3
=16.04
All of
ubuntu/libmbedx509-0<2.2.1-2ubuntu0.3
2.2.1-2ubuntu0.3
=16.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this issue?

    The vulnerability ID for this issue is USN-4267-1.

  • What is the severity of USN-4267-1?

    The severity of USN-4267-1 is not specified.

  • How can an attacker exploit the vulnerability described in USN-4267-1?

    An attacker can exploit the vulnerability in USN-4267-1 to execute arbitrary code or cause a denial of service.

  • How do I fix the vulnerability described in USN-4267-1?

    To fix the vulnerability described in USN-4267-1, update the affected software to version 2.2.1-2ubuntu0.3 or later.

  • Where can I find more information about USN-4267-1?

    You can find more information about USN-4267-1 on the Ubuntu website.

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