Alpine: libcrypto3, multiple openssl packages: security update to 1.1.1-r0 (deprecated)

medium Tenable Cloud Security Plugin ID 400333

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

- The X.509 GeneralName type is a generic type for representing different types of names. One of those name
types is known as EDIPartyName. OpenSSL provides a function GENERAL_NAME_cmp which compares different
instances of a GENERAL_NAME to see if they are equal or not. This function behaves incorrectly when both
GENERAL_NAMEs contain an EDIPARTYNAME. A NULL pointer dereference and a crash may occur leading to a
possible denial of service attack. OpenSSL itself uses the GENERAL_NAME_cmp function for two purposes: 1)
Comparing CRL distribution point names between an available CRL and a CRL distribution point embedded in
an X509 certificate 2) When verifying that a timestamp response token signer matches the timestamp
authority name (exposed via the API functions TS_RESP_verify_response and TS_RESP_verify_token) If an
attacker can control both items being compared then that attacker could trigger a crash. For example if
the attacker can trick a client or server into checking a malicious certificate against a malicious CRL
then this may occur. Note that some applications automatically download CRLs based on a URL embedded in a
certificate. This checking happens prior to the signatures on the certificate and CRL being verified.
OpenSSL's s_server, s_client and verify tools have support for the "-crl_download" option which implements
automatic CRL downloading and this attack has been demonstrated to work against those tools. Note that an
unrelated bug means that affected versions of OpenSSL cannot parse or construct correct encodings of
EDIPARTYNAME. However it is possible to construct a malformed EDIPARTYNAME that OpenSSL's parser will
accept and hence trigger this attack. All OpenSSL 1.1.1 and 1.0.2 versions are affected by this issue.
Other OpenSSL releases are out of support and have not been checked. Fixed in OpenSSL 1.1.1i (Affected
1.1.1-1.1.1h). Fixed in OpenSSL 1.0.2x (Affected 1.0.2-1.0.2w). (CVE-2020-1971)

Plugin Details

Severity: Medium

ID: 400333

Version: Revision 1.28

Type: Local

Family: Alpine Linux Local Security Checks

Published: 8/16/2023

Updated: 7/2/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.69

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.6

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2020-1971

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.5

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/8/2020

Vulnerability Publication Date: 12/8/2020

Reference Information

CVE: CVE-2020-1971

IAVA: 2020-A-0566-S

Detections

Analytics