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Vulnerability Details : CVE-2021-23840

Calls to EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate may overflow the output length argument in some cases where the input length is close to the maximum permissable length for an integer on the platform. In such cases the return value from the function call will be 1 (indicating success), but the output length value will be negative. This could cause applications to behave incorrectly or crash. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x).
Publish Date : 2021-02-16 Last Update Date : 2021-10-22
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- CVSS Scores & Vulnerability Types

CVSS Score
5.0
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Overflow
CWE ID 190

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2021:3798: openssl security update (Moderate) oval:com.redhat.rhsa:def:20213798 unix
RHSA-2021:4198: edk2 security, bug fix, and enhancement update (Moderate) oval:com.redhat.rhsa:def:20214198 unix
RHSA-2021:4424: openssl security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20214424 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2021-23840

# Product Type Vendor Product Version Update Edition Language
1 OS Debian Debian Linux 10.0 * * * Version Details Vulnerabilities
2 Application Openssl Openssl * * * * Version Details Vulnerabilities
3 Application Oracle Enterprise Manager Ops Center 12.4.0.0 * * * Version Details Vulnerabilities
4 Application Oracle Graalvm 19.3.5 * * * Version Details Vulnerabilities
5 Application Oracle Graalvm 20.3.1.2 * * * Version Details Vulnerabilities
6 Application Oracle Graalvm 21.0.0.2 * * * Version Details Vulnerabilities
7 Application Oracle Mysql Server * * * * Version Details Vulnerabilities
8 Application Oracle Nosql Database * * * * Version Details Vulnerabilities
9 Application Tenable Log Correlation Engine * * * * Version Details Vulnerabilities
10 Application Tenable Nessus Network Monitor 5.11.0 * * * Version Details Vulnerabilities
11 Application Tenable Nessus Network Monitor 5.11.1 * * * Version Details Vulnerabilities
12 Application Tenable Nessus Network Monitor 5.12.0 * * * Version Details Vulnerabilities
13 Application Tenable Nessus Network Monitor 5.12.1 * * * Version Details Vulnerabilities
14 Application Tenable Nessus Network Monitor 5.13.0 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Debian Debian Linux 1
Openssl Openssl 1
Oracle Enterprise Manager Ops Center 1
Oracle Graalvm 3
Oracle Mysql Server 1
Oracle Nosql Database 1
Tenable Log Correlation Engine 1
Tenable Nessus Network Monitor 5

- References For CVE-2021-23840

https://kc.mcafee.com/corporate/index?page=content&id=SB10366 CONFIRM
https://www.oracle.com/security-alerts/cpuoct2021.html
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44846 CONFIRM
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=6a51b9e1d0cf0bf8515f7201b68fb0a3482b3dc1 CONFIRM
https://www.oracle.com//security-alerts/cpujul2021.html
N/A N/A
https://security.gentoo.org/glsa/202103-03
GENTOO GLSA-202103-03
https://www.tenable.com/security/tns-2021-09 CONFIRM
https://www.tenable.com/security/tns-2021-10 CONFIRM
https://www.oracle.com/security-alerts/cpuApr2021.html
https://lists.apache.org/thread.html/[email protected]%3Cissues.bookkeeper.apache.org%3E
MLIST [bookkeeper-issues] 20210629 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8
https://lists.apache.org/thread.html/[email protected]%3Cissues.bookkeeper.apache.org%3E
MLIST [bookkeeper-issues] 20210628 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8
https://www.tenable.com/security/tns-2021-03 CONFIRM
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=9b1129239f3ebb1d1c98ce9ed41d5c9476c47cb2 CONFIRM
https://www.debian.org/security/2021/dsa-4855
DEBIAN DSA-4855
https://www.openssl.org/news/secadv/20210216.txt CONFIRM
https://security.netapp.com/advisory/ntap-20210219-0009/ CONFIRM

- Metasploit Modules Related To CVE-2021-23840

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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