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Ubuntu.comUB:CVE-2021-24116

HistoryJul 14, 2021 - 12:00 a.m.

CVE-2021-24116

2021-07-1400:00:00

ubuntu.com

wolfssl

base64 pem file

side-channel vulnerability

rsa keys

intel sgx

unix

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:S/C:P/I:N/A:N

CVSS3

4.9

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

EPSS

0.001

Percentile

27.0%

JSON

In wolfSSL through 4.6.0, 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.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchwolfssl< anyUNKNOWN
ubuntu20.04noarchwolfssl< anyUNKNOWN
ubuntu22.04noarchwolfssl< anyUNKNOWN
ubuntu24.04noarchwolfssl< anyUNKNOWN
ubuntu16.04noarchwolfssl< anyUNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	wolfssl	< any	UNKNOWN
ubuntu	20.04	noarch	wolfssl	< any	UNKNOWN
ubuntu	22.04	noarch	wolfssl	< any	UNKNOWN
ubuntu	24.04	noarch	wolfssl	< any	UNKNOWN
ubuntu	16.04	noarch	wolfssl	< any	UNKNOWN

References

github.com/UzL-ITS/util-lookup/blob/main/cve-vulnerability-publication.md

github.com/wolfSSL/wolfssl/releases

launchpad.net/bugs/cve/CVE-2021-24116

nvd.nist.gov/vuln/detail/CVE-2021-24116

security-tracker.debian.org/tracker/CVE-2021-24116

www.cve.org/CVERecord?id=CVE-2021-24116

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:S/C:P/I:N/A:N

CVSS3

4.9

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

EPSS

0.001

Percentile

27.0%

JSON

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