ALAS-2012-038


Amazon Linux AMI Security Advisory: ALAS-2012-38
Advisory Release Date: 2014-09-14 15:14 Pacific
Severity: Medium

Issue Overview:

It was discovered that the Datagram Transport Layer Security (DTLS) protocol implementation in OpenSSL leaked timing information when performing certain operations. A remote attacker could possibly use this flaw to retrieve plain text from the encrypted packets by using a DTLS server as a padding oracle. (CVE-2011-4108 )

An information leak flaw was found in the SSL 3.0 protocol implementation in OpenSSL. Incorrect initialization of SSL record padding bytes could cause an SSL client or server to send a limited amount of possibly sensitive data to its SSL peer via the encrypted connection. (CVE-2011-4576 )

A denial of service flaw was found in the RFC 3779 implementation in OpenSSL. A remote attacker could use this flaw to make an application using OpenSSL exit unexpectedly by providing a specially-crafted X.509 certificate that has malformed RFC 3779 extension data. (CVE-2011-4577 )

It was discovered that OpenSSL did not limit the number of TLS/SSL handshake restarts required to support Server Gated Cryptography. A remote attacker could use this flaw to make a TLS/SSL server using OpenSSL consume an excessive amount of CPU by continuously restarting the handshake. (CVE-2011-4619 )


Affected Packages:

openssl


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

New Packages:
i686:
    openssl-1.0.0g-1.26.amzn1.i686
    openssl-perl-1.0.0g-1.26.amzn1.i686
    openssl-devel-1.0.0g-1.26.amzn1.i686
    openssl-debuginfo-1.0.0g-1.26.amzn1.i686
    openssl-static-1.0.0g-1.26.amzn1.i686

src:
    openssl-1.0.0g-1.26.amzn1.src

x86_64:
    openssl-static-1.0.0g-1.26.amzn1.x86_64
    openssl-debuginfo-1.0.0g-1.26.amzn1.x86_64
    openssl-devel-1.0.0g-1.26.amzn1.x86_64
    openssl-perl-1.0.0g-1.26.amzn1.x86_64
    openssl-1.0.0g-1.26.amzn1.x86_64