ALAS2-2021-1622


Amazon Linux 2 Security Advisory: ALAS-2021-1622
Advisory Release Date: 2021-03-25 18:31 Pacific
Advisory Updated Date: 2021-03-25 20:52 Pacific
Severity: Important

Issue Overview:

A flaw was found in openssl. A server crash and denial of service attack could occur if a client sends a TLSv1.2 renegotiation ClientHello and omits the signature_algorithms extension but includes a signature_algorithms_cert extension. The highest threat from this vulnerability is to system availability. (CVE-2021-3449 )

A flaw was found in openssl. The flag that enables additional security checks of certificates present in a certificate chain was not enabled allowing a confirmation step to verify that certificates in the chain are valid CA certificates is bypassed. The highest threat from this vulnerability is to data confidentiality and integrity. (CVE-2021-3450 )


Affected Packages:

openssl11


Issue Correction:
Run yum update openssl11 to update your system.

New Packages:
aarch64:
    openssl11-1.1.1g-12.amzn2.0.3.aarch64
    openssl11-libs-1.1.1g-12.amzn2.0.3.aarch64
    openssl11-devel-1.1.1g-12.amzn2.0.3.aarch64
    openssl11-static-1.1.1g-12.amzn2.0.3.aarch64
    openssl11-debuginfo-1.1.1g-12.amzn2.0.3.aarch64

i686:
    openssl11-1.1.1g-12.amzn2.0.3.i686
    openssl11-libs-1.1.1g-12.amzn2.0.3.i686
    openssl11-devel-1.1.1g-12.amzn2.0.3.i686
    openssl11-static-1.1.1g-12.amzn2.0.3.i686
    openssl11-debuginfo-1.1.1g-12.amzn2.0.3.i686

src:
    openssl11-1.1.1g-12.amzn2.0.3.src

x86_64:
    openssl11-1.1.1g-12.amzn2.0.3.x86_64
    openssl11-libs-1.1.1g-12.amzn2.0.3.x86_64
    openssl11-devel-1.1.1g-12.amzn2.0.3.x86_64
    openssl11-static-1.1.1g-12.amzn2.0.3.x86_64
    openssl11-debuginfo-1.1.1g-12.amzn2.0.3.x86_64