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Alpine: openssl: security update to 1.1.1u-r0
critical Tenable Cloud Security Plugin ID 406109
Description
There are packages installed that are affected by a vulnerability referenced in the following CVE:- Issue summary: Processing some specially crafted ASN.1 object identifiers or data containing them may be
very slow. Impact summary: Applications that use OBJ_obj2txt() directly, or use any of the OpenSSL
subsystems OCSP, PKCS7/SMIME, CMS, CMP/CRMF or TS with no message size limit may experience notable to
very long delays when processing those messages, which may lead to a Denial of Service. An OBJECT
IDENTIFIER is composed of a series of numbers - sub-identifiers - most of which have no size limit.
OBJ_obj2txt() may be used to translate an ASN.1 OBJECT IDENTIFIER given in DER encoding form (using the
OpenSSL type ASN1_OBJECT) to its canonical numeric text form, which are the sub-identifiers of the OBJECT
IDENTIFIER in decimal form, separated by periods. When one of the sub-identifiers in the OBJECT IDENTIFIER
is very large (these are sizes that are seen as absurdly large, taking up tens or hundreds of KiBs), the
translation to a decimal number in text may take a very long time. The time complexity is O(n^2) with 'n'
being the size of the sub-identifiers in bytes (*). With OpenSSL 3.0, support to fetch cryptographic
algorithms using names / identifiers in string form was introduced. This includes using OBJECT IDENTIFIERs
in canonical numeric text form as identifiers for fetching algorithms. Such OBJECT IDENTIFIERs may be
received through the ASN.1 structure AlgorithmIdentifier, which is commonly used in multiple protocols to
specify what cryptographic algorithm should be used to sign or verify, encrypt or decrypt, or digest
passed data. Applications that call OBJ_obj2txt() directly with untrusted data are affected, with any
version of OpenSSL. If the use is for the mere purpose of display, the severity is considered low. In
OpenSSL 3.0 and newer, this affects the subsystems OCSP, PKCS7/SMIME, CMS, CMP/CRMF or TS. It also impacts
anything that processes X.509 certificates, including simple things like verifying its signature. The
impact on TLS is relatively low, because all versions of OpenSSL have a 100KiB limit on the peer's
certificate chain. Additionally, this only impacts clients, or servers that have explicitly enabled client
authentication. In OpenSSL 1.1.1 and 1.0.2, this only affects displaying diverse objects, such as X.509
certificates. This is assumed to not happen in such a way that it would cause a Denial of Service, so
these versions are considered not affected by this issue in such a way that it would be cause for concern,
and the severity is therefore considered low. (CVE-2023-2650)
See Also
Plugin Details
Severity: Critical
ID: 406109
Version: Revision 1.26
Type: Local
Published: 10/31/2023
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: 23.71
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 5.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2023-2650
CVSS v3
Risk Factor: Medium
Base Score: 6.5
Temporal Score: 5.7
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS v4
Risk Factor: Critical
Base Score: 9.3
Threat Score: 8.1
Threat Vector: CVSS:4.0/E:U
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Vulnerability Information
Exploit Ease: No known exploits are available
Vulnerability Publication Date: 3/21/2023
Reference Information
CVE: CVE-2023-2650
IAVA: 2023-A-0158-S