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CVE-2021-23841

Description

The OpenSSL public API function X509_issuer_and_serial_hash() attempts to create a unique hash value based on the issuer and serial number data contained within an X509 certificate. However it fails to correctly handle any errors that may occur while parsing the issuer field (which might occur if the issuer field is maliciously constructed). This may subsequently result in a NULL pointer deref and a crash leading to a potential denial of service attack. The function X509_issuer_and_serial_hash() is never directly called by OpenSSL itself so applications are only vulnerable if they use this function directly and they use it on certificates that may have been obtained from untrusted sources. 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).

Risk Information

Base Score
5.9
MODERATE
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
Exploitation Probability
0.518

Associated Vulnerability

VulnerabilityOS Platform
Vulnerabilities CVE-2021-23841,CVE-2021-23840,CVE-2021-3712 are fixed in OpenSSL 1.1.1jWindows
Vulnerabilities CVE-2021-23841,CVE-2021-23840,CVE-2021-3712 are fixed in OpenSSL (x64) 1.1.1jWindows
Multiple Vulnerabilities are affected in Mysql 8.0.23Windows
Vulnerabilities CVE-2021-23840,CVE-2021-23841,CVE-2021-20077 are fixed in Nessus Agent (8.2.3.20045)Windows
Vulnerabilities CVE-2021-23840,CVE-2021-23841,CVE-2021-20077 are fixed in Nessus Agent (x64) (8.2.3.20045)Windows
Multiple vulnerabilities are affected in Mysql 5.7.33Windows
Multiple Vulnerabilities are affected in IBM Cognos Analytics 11.1.7Windows
Multiple Vulnerabilities are affected in IBM Cognos Analytics 11.2.4Windows
Multiple Vulnerabilities are affected in IBM Cognos Analytics 12.0.1Windows
Multiple Vulnerabilities are affected in Netapp Oncommand Insight 2.3Windows
Vulnerabilities CVE-2021-2161,CVE-2021-2163,CVE-2021-23841,CVE-2021-3450 are affected in Oracle GraalVM Enterprise Edition 19.3.5Windows
Vulnerabilities CVE-2021-2161,CVE-2021-2163,CVE-2021-23841,CVE-2021-3450 are affected in Oracle GraalVM Enterprise Edition 20.3.1.2Windows
Vulnerabilities CVE-2021-2161,CVE-2021-2163,CVE-2021-23841,CVE-2021-3450 are affected in Oracle GraalVM Enterprise Edition 21.0.0.2Windows
Multiple Vulnerabilities are affected in IBM Security Guardium 11.1Windows
Multiple Vulnerabilities are affected in IBM Security Guardium 11.2Windows
Multiple Vulnerabilities are affected in IBM Security Guardium 11.3Windows
Multiple Vulnerabilities are affected in IBM Security Guardium 11.4Windows
Multiple Vulnerabilities are affected in Netapp Snapcenter 2.3Windows
Multiple Vulnerabilities are affected in Netapp Oncommand Workflow Automation 2.3Windows
Multiple Vulnerabilities are affected in Nessus Network Monitor 5.13.0Windows
Multiple Vulnerabilities are affected in Nessus Network Monitor 5.11.0Windows
Multiple Vulnerabilities are affected in Nessus Network Monitor 5.11.1Windows
Multiple Vulnerabilities are affected in Nessus Network Monitor 5.12.0Windows
Vulnerabilities CVE-2021-23840,CVE-2021-23841,CVE-2021-3449,CVE-2021-3450 are affected in Nessus Network Monitor 5.12.1Windows
Vulnerabilities CVE-2021-23841 are affected in Apple Safari 14.1.0Windows
Multiple Vulnerabilities are affected in IBM Security Guardium 11.0Windows
Multiple vulnerabilities are fixed in MacOS Big Sur 11.4 - Software UpdateMac
Vulnerabilities CVE-2021-23841 are affected in Apple Safari for MAC 14.1.0Mac
openssl security update(DSA-4855-1) openssl_1.1.1d-0+deb10u5_i386.debLinux
openssl security update(DSA-4855-1) openssl_1.1.1d-0+deb10u5_amd64.debLinux
Secure Socket Layer (SSL) cryptographic library and tools (USN-4738-1) libssl1.1_1.1.1f-1ubuntu2.2_i386.debLinux
Secure Socket Layer (SSL) cryptographic library and tools (USN-4738-1) libssl1.1_1.1.1f-1ubuntu2.2_amd64.debLinux
Secure Socket Layer (SSL) cryptographic library and tools (USN-4738-1) libssl1.1_1.1.1f-1ubuntu4.2_i386.debLinux
Secure Socket Layer (SSL) cryptographic library and tools (USN-4738-1) libssl1.1_1.1.1f-1ubuntu4.2_amd64.debLinux
Secure Socket Layer (SSL) cryptographic library and tools (USN-4738-1) libssl1.1_1.1.1-1ubuntu2.1~18.04.8_i386.debLinux
Secure Socket Layer (SSL) cryptographic library and tools (USN-4738-1) libssl1.1_1.1.1-1ubuntu2.1~18.04.8_amd64.debLinux
Secure Socket Layer (SSL) cryptographic library and tools (USN-4738-1) libssl1.0.0_1.0.2n-1ubuntu5.6_i386.debLinux
Secure Socket Layer (SSL) cryptographic library and tools (USN-4738-1) libssl1.0.0_1.0.2n-1ubuntu5.6_amd64.debLinux
Secure Socket Layer (SSL) cryptographic library and tools (USN-4738-1) libssl1.0.0_1.0.2g-1ubuntu4.19_i386.debLinux
Secure Socket Layer (SSL) cryptographic library and tools (USN-4738-1) libssl1.0.0_1.0.2g-1ubuntu4.19_amd64.debLinux
SUSE-SU-2021:0752-1(SUSE Linux Enterprise Server 12-SP5 ) libopenssl1_1-1.1.1d-2.30.1.x86_64.rpmLinux
SUSE-SU-2021:0752-1(SUSE Linux Enterprise Server 12-SP5 ) libopenssl1_1-32bit-1.1.1d-2.30.1.x86_64.rpmLinux
SUSE-SU-2021:0752-1(SUSE Linux Enterprise Server 12-SP5 ) libopenssl1_1-debuginfo-1.1.1d-2.30.1.x86_64.rpmLinux
SUSE-SU-2021:0752-1(SUSE Linux Enterprise Server 12-SP5 ) libopenssl1_1-debuginfo-32bit-1.1.1d-2.30.1.x86_64.rpmLinux
SUSE-SU-2021:0752-1(SUSE Linux Enterprise Server 12-SP5 ) openssl-1_1-1.1.1d-2.30.1.x86_64.rpmLinux
SUSE-SU-2021:0752-1(SUSE Linux Enterprise Server 12-SP5 ) openssl-1_1-debuginfo-1.1.1d-2.30.1.x86_64.rpmLinux
SUSE-SU-2021:0752-1(SUSE Linux Enterprise Server 12-SP5 ) openssl-1_1-debugsource-1.1.1d-2.30.1.x86_64.rpmLinux
(RHSA-2021:3798) openssl security update openssl-1.0.2k-22.el7_9.x86_64.rpmLinux
(RHSA-2021:3798) openssl security update openssl-devel-1.0.2k-22.el7_9.i686.rpmLinux
(RHSA-2021:3798) openssl security update openssl-devel-1.0.2k-22.el7_9.x86_64.rpmLinux
(RHSA-2021:3798) openssl security update openssl-libs-1.0.2k-22.el7_9.i686.rpmLinux
(RHSA-2021:3798) openssl security update openssl-libs-1.0.2k-22.el7_9.x86_64.rpmLinux
(RHSA-2021:3798) openssl security update openssl-perl-1.0.2k-22.el7_9.x86_64.rpmLinux
(RHSA-2021:3798) openssl security update openssl-static-1.0.2k-22.el7_9.i686.rpmLinux
(RHSA-2021:3798) openssl security update openssl-static-1.0.2k-22.el7_9.x86_64.rpmLinux
Openssl update (ELSA-2021-3798) openssl-1.0.2k-22.el7_9.x86_64.rpmLinux
Openssl-devel update (ELSA-2021-3798) openssl-devel-1.0.2k-22.el7_9.i686.rpmLinux
Openssl-devel update (ELSA-2021-3798) openssl-devel-1.0.2k-22.el7_9.x86_64.rpmLinux
Openssl-libs update (ELSA-2021-3798) openssl-libs-1.0.2k-22.el7_9.i686.rpmLinux
Openssl-libs update (ELSA-2021-3798) openssl-libs-1.0.2k-22.el7_9.x86_64.rpmLinux
Openssl-perl update (ELSA-2021-3798) openssl-perl-1.0.2k-22.el7_9.x86_64.rpmLinux
Openssl-static update (ELSA-2021-3798) openssl-static-1.0.2k-22.el7_9.i686.rpmLinux
Openssl-static update (ELSA-2021-3798) openssl-static-1.0.2k-22.el7_9.x86_64.rpmLinux
Secure Socket Layer (SSL) cryptographic library and tools (USN-4745-1) libssl1.0.0_1.0.1-4ubuntu5.45_i386.debLinux
Secure Socket Layer (SSL) cryptographic library and tools (USN-4745-1) libssl1.0.0_1.0.1-4ubuntu5.45_amd64.debLinux
NULL Pointer Dereference Vulnerability (CVE-2021-23841)NCM

Patch Details

Click to see the patches provided by ManageEngine for this CVE
Patch IDPatch Description
PATCH-337447Nessus Agent (10.6.1)
PATCH-337448Nessus Agent (x64) (10.6.1)
PATCH-605752MacOS Big Sur 11.7.10 - Software Update (Force Reboot)(CVE-2023-41064)
PATCH-612606Apple Safari for MAC (MacOS Sequoia) (26.1)

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234