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SUSE-SU-2021:0954-1 Not scored

Security update for openssl-1_1

This update for openssl-1_1 fixes the following security issue: * CVE-2021-3449: 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, then a NULL pointer dereference will result, leading to a crash and a denial of service attack. OpenSSL TLS clients are not impacted by this issue. [bsc#1183852]

Exploit probability Not scored
Published March 25, 2021
Required by Not available
Last source change February 4, 2026

02 / AFFECTED SOFTWARE

Affected packages

SUSE:Linux Enterprise Server 12 SP4-LTSS openssl-1_1
SUSE:Linux Enterprise Server 12 SP5 openssl-1_1
SUSE:Linux Enterprise Server for SAP Applications 12 SP4 openssl-1_1
SUSE:Linux Enterprise Server for SAP Applications 12 SP5 openssl-1_1
SUSE:Linux Enterprise Software Development Kit 12 SP5 openssl-1_1
SUSE:OpenStack Cloud 9 openssl-1_1
SUSE:OpenStack Cloud Crowbar 9 openssl-1_1

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities SUSE-SU-2021:0954-1

This update for openssl-1_1 fixes the following security issue: * CVE-2021-3449: 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, then a NULL pointer dereference will result, leading to a crash and a denial of service attack. OpenSSL TLS clients are not impacted by this issue. [bsc#1183852]

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05 / REFERENCES

Further evidence