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CVE-2021-3449

🗓️ 25 Mar 2021 00:00:00Reported by ubuntu.comType 
ubuntucve
 ubuntucve🔗 ubuntu.com👁 39 Views

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension but includes a signature_algorithms_cert extension, a NULL pointer dereference will result, leading to a crash and a denial of service attack

Related
Packages
Refs
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in OpenSSL may affect IBM Workload Scheduler
8 Sep 202109:42
–ibm
IBM Security Bulletins		Security Bulletin: Potential DoS in IBM DataPower Gateway
16 Aug 202115:12
–ibm
IBM Security Bulletins		Security Bulletin: Cloud Pak for Security has several security vulnerabilities addressed in the latest version
30 Jul 202107:38
–ibm
IBM Security Bulletins		Security Bulletin: IBM QRadar SIEM Application Framework v1 (CentOS6) is End of Life
14 Dec 202120:35
–ibm
IBM Security Bulletins		Security Bulletin: IBM App Connect Enterprise Certified Container may be affected by OpenSSL vulnerabilities (CVE-2021-3449 and CVE-2021-3450)
30 Apr 202113:30
–ibm
IBM Security Bulletins		Security Bulletin: WebSphere MQ for HP NonStop Server is affected by OpenSSL vulnerabilities (CVE-2021-3449 and CVE-2021-3450)
14 Jun 202114:05
–ibm
IBM Security Bulletins		Security Bulletin: App Connect Professional & IBM WebSphere Cast Iron Solution are affected by OpenSSL vulnerability
22 Dec 202110:16
–ibm
IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in OpenSSL affect IBM Tivoli Netcool System Service Monitors/Application Service Monitors
14 Jul 202118:41
–ibm
IBM Security Bulletins		Security Bulletin:Multiple vulnerabilities fixed in IBM Security Verify Bridge - Docker
22 Sep 202122:32
–ibm
IBM Security Bulletins		Security Bulletin: OpenSSL Vulnerabilities Affect IBM Sterling Connect:Express for UNIX (CVE-2021-3449, CVE-2021-3450)
17 May 202114:30
–ibm
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OSOS VersionArchitecturePackagePackage VersionFilename
Ubuntu21.04anyopenssl1.1.1j-1ubuntu3openssl_1.1.1j-1ubuntu3_any.deb
Ubuntu21.10anyopenssl1.1.1j-1ubuntu3openssl_1.1.1j-1ubuntu3_any.deb
Ubuntu22.04anyopenssl1.1.1j-1ubuntu3openssl_1.1.1j-1ubuntu3_any.deb
Ubuntu18.04anyopenssl1.1.1-1ubuntu2.1~18.04.9openssl_1.1.1-1ubuntu2.1~18.04.9_any.deb
Ubuntu20.04anyopenssl1.1.1f-1ubuntu2.3openssl_1.1.1f-1ubuntu2.3_any.deb
Ubuntu20.10anyopenssl1.1.1f-1ubuntu4.3openssl_1.1.1f-1ubuntu4.3_any.deb
Ubuntu22.10anyopenssl1.1.1j-1ubuntu3openssl_1.1.1j-1ubuntu3_any.deb
Ubuntu23.04anyopenssl1.1.1j-1ubuntu3openssl_1.1.1j-1ubuntu3_any.deb
Ubuntu23.10anyopenssl1.1.1j-1ubuntu3openssl_1.1.1j-1ubuntu3_any.deb
Ubuntu24.04anyopenssl1.1.1j-1ubuntu3openssl_1.1.1j-1ubuntu3_any.deb
Rows per page

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18 Aug 2025 17:15Current
7High risk
Vulners AI Score7
CVSS 24.3
CVSS 3.15.9
EPSS0.63542
openssl tls servercrashmaliciously craftedrenegotiationclienthellotlsv1.2signature_algorithmsnull pointer dereferencedos attack
39