Test ID:	1.3.6.1.4.1.25623.1.0.145407
Category:	Denial of Service
Title:	OpenSSL: Integer overflow in CipherUpdate (CVE-2021-23840) - Linux
Summary:	OpenSSL is prone to an integer overflow vulnerability.
Description:	Summary: OpenSSL is prone to an integer overflow vulnerability. Vulnerability Insight: 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 permissible 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. Vulnerability Impact: This vulnerability could cause applications to behave incorrectly or crash. Affected Software/OS: OpenSSL versions 1.0.2x and prior and 1.1.1i and prior. Solution: Update to version 1.0.2y, 1.1.1j or later. See the references for more details. CVSS Score: 5.0 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2021-23840 https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=6a51b9e1d0cf0bf8515f7201b68fb0a3482b3dc1 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=9b1129239f3ebb1d1c98ce9ed41d5c9476c47cb2 https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44846 https://kc.mcafee.com/corporate/index?page=content&id=SB10366 https://security.netapp.com/advisory/ntap-20210219-0009/ https://www.openssl.org/news/secadv/20210216.txt https://www.tenable.com/security/tns-2021-03 https://www.tenable.com/security/tns-2021-09 https://www.tenable.com/security/tns-2021-10 Debian Security Information: DSA-4855 (Google Search) https://www.debian.org/security/2021/dsa-4855 https://security.gentoo.org/glsa/202103-03 https://www.oracle.com//security-alerts/cpujul2021.html https://www.oracle.com/security-alerts/cpuApr2021.html https://www.oracle.com/security-alerts/cpuapr2022.html https://www.oracle.com/security-alerts/cpujan2022.html https://www.oracle.com/security-alerts/cpuoct2021.html https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
Copyright	Copyright (C) 2021 Greenbone Networks GmbH

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