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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2023-5363 Detail

Description

Issue summary: A bug has been identified in the processing of key and initialisation vector (IV) lengths. This can lead to potential truncation or overruns during the initialisation of some symmetric ciphers. Impact summary: A truncation in the IV can result in non-uniqueness, which could result in loss of confidentiality for some cipher modes. When calling EVP_EncryptInit_ex2(), EVP_DecryptInit_ex2() or EVP_CipherInit_ex2() the provided OSSL_PARAM array is processed after the key and IV have been established. Any alterations to the key length, via the "keylen" parameter or the IV length, via the "ivlen" parameter, within the OSSL_PARAM array will not take effect as intended, potentially causing truncation or overreading of these values. The following ciphers and cipher modes are impacted: RC2, RC4, RC5, CCM, GCM and OCB. For the CCM, GCM and OCB cipher modes, truncation of the IV can result in loss of confidentiality. For example, when following NIST's SP 800-38D section 8.2.1 guidance for constructing a deterministic IV for AES in GCM mode, truncation of the counter portion could lead to IV reuse. Both truncations and overruns of the key and overruns of the IV will produce incorrect results and could, in some cases, trigger a memory exception. However, these issues are not currently assessed as security critical. Changing the key and/or IV lengths is not considered to be a common operation and the vulnerable API was recently introduced. Furthermore it is likely that application developers will have spotted this problem during testing since decryption would fail unless both peers in the communication were similarly vulnerable. For these reasons we expect the probability of an application being vulnerable to this to be quite low. However if an application is vulnerable then this issue is considered very serious. For these reasons we have assessed this issue as Moderate severity overall. The OpenSSL SSL/TLS implementation is not affected by this issue. The OpenSSL 3.0 and 3.1 FIPS providers are not affected by this because the issue lies outside of the FIPS provider boundary. OpenSSL 3.1 and 3.0 are vulnerable to this issue.


Metrics

 
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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
http://www.openwall.com/lists/oss-security/2023/10/24/1 CVE
https://cert-portal.siemens.com/productcert/html/ssa-082556.html siemens-SADP
https://cert-portal.siemens.com/productcert/html/ssa-093430.html siemens-SADP
https://cert-portal.siemens.com/productcert/html/ssa-277137.html siemens-SADP
https://cert-portal.siemens.com/productcert/html/ssa-331112.html siemens-SADP
https://cert-portal.siemens.com/productcert/html/ssa-769027.html siemens-SADP
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=0df40630850fb2740e6be6890bb905d3fc623b2d CVE, OpenSSL Software Foundation Mailing List  Patch  Third Party Advisory 
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=5f69f5c65e483928c4b28ed16af6e5742929f1ee CVE, OpenSSL Software Foundation Patch  Vendor Advisory 
https://security.netapp.com/advisory/ntap-20231027-0010/ CVE
https://security.netapp.com/advisory/ntap-20240201-0003/ CVE
https://security.netapp.com/advisory/ntap-20240201-0004/ CVE
https://security.netapp.com/advisory/ntap-20241108-0002/ CVE
https://www.debian.org/security/2023/dsa-5532 CVE
https://www.openssl.org/news/secadv/20231024.txt CVE, OpenSSL Software Foundation Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-noinfo Insufficient Information cwe source acceptance level NIST  
CWE-684 Incorrect Provision of Specified Functionality OpenSSL Software Foundation  

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Change History

12 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2023-5363
NVD Published Date:
10/25/2023
NVD Last Modified:
06/17/2026
Source:
OpenSSL Software Foundation