In Trusted Firmware Mbed TLS 2.24.0, a side-channel vulnerability in base64 PEM file decoding allows system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-channel and side-channel attack on software running in isolated environments that can be single stepped, especially Intel SGX.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In Trusted Firmware Mbed TLS 2.24.0, a side-channel vulnerability in base64 PEM file decoding allows     system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-     channel and side-channel attack on software running in isolated environments that can be single stepped,     especially Intel SGX. (CVE-2021-24119)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3249 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-3249-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                      Markus Koschany     December 26, 2022                             https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : mbedtls     Version        : 2.16.9-0~deb10u1     CVE ID         : CVE-2019-16910 CVE-2019-18222 CVE-2020-10932 CVE-2020-10941                      CVE-2020-16150 CVE-2020-36421 CVE-2020-36422 CVE-2020-36423                      CVE-2020-36424 CVE-2020-36425 CVE-2020-36426 CVE-2020-36475                      CVE-2020-36476 CVE-2020-36478 CVE-2021-24119 CVE-2021-43666                      CVE-2021-44732 CVE-2022-35409     Debian Bug     : 941265 963159 972806 1002631

    Multiple security vulnerabilities have been discovered in mbedtls, a     lightweight crypto and SSL/TLS library, which may allow attackers to obtain     sensitive information like the RSA private key or cause a denial of service     (application or server crash).

    For Debian 10 buster, these problems have been fixed in version     2.16.9-0~deb10u1.

    We recommend that you upgrade your mbedtls packages.

    For the detailed security status of mbedtls please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/mbedtls

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: This is a digitally signed message part

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-2826 advisory.

    Several vulnerabilities were discovered in mbed TLS, a lightweight crypto and SSL/TLS library, which could     result in denial of service, information disclosure or side-channel attacks. For Debian 9 stretch, these     problems have been fixed in version 2.4.2-1+deb9u4. We recommend that you upgrade your mbedtls packages.
    For the detailed security status of mbedtls please refer to its security tracker page at:
    https://security-tracker.debian.org/tracker/mbedtls Further information about Debian LTS security     advisories, how to apply these updates to your system and frequently asked questions can be found at:
    https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SUSE15 host has packages installed that are affected by a vulnerability as referenced in the openSUSE-SU-2021:1389-1 advisory.

  - In Trusted Firmware Mbed TLS 2.24.0, a side-channel vulnerability in base64 PEM file decoding allows     system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-     channel and side-channel attack on software running in isolated environments that can be single stepped,     especially Intel SGX. (CVE-2021-24119)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SUSE15 host has packages installed that are affected by a vulnerability as referenced in the openSUSE-SU-2021:1344-1 advisory.

  - In Trusted Firmware Mbed TLS 2.24.0, a side-channel vulnerability in base64 PEM file decoding allows     system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-     channel and side-channel attack on software running in isolated environments that can be single stepped,     especially Intel SGX. (CVE-2021-24119)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
223640	Linux Distros Unpatched Vulnerability : CVE-2021-24119	Nessus	Misc.	medium
169300	Debian dla-3249 : libmbedcrypto3 - security update	Nessus	Debian Local Security Checks	critical
155683	Debian DLA-2826-1 : mbedtls - LTS security update	Nessus	Debian Local Security Checks	high
154282	openSUSE 15 Security Update : mbedtls (openSUSE-SU-2021:1389-1)	Nessus	SuSE Local Security Checks	medium
154012	openSUSE 15 Security Update : mbedtls (openSUSE-SU-2021:1344-1)	Nessus	SuSE Local Security Checks	medium

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CVE-2021-24119

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Tenable Plugins

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critical

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medium