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Debian: DSA-3053-1 Critical: OpenSSL Buffer Overflow and Attacks

debian
Calendar Grey October 16, 2014
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Urgent patch released for Debian OpenSSL tackling several vulnerabilities like memory exposure and man-in-the-middle exploits.
Several vulnerabilities have been found in OpenSSL, the Secure Sockets Layer library and toolkit

Summary

CVE-2014-3513

A memory leak flaw was found in the way OpenSSL parsed the DTLS Secure
Real-time Transport Protocol (SRTP) extension data. A remote attacker
could send multiple specially crafted handshake messages to exhaust
all available memory of an SSL/TLS or DTLS server.

CVE-2014-3566 ("POODLE")

A flaw was found in the way SSL 3.0 handled padding bytes when
decrypting messages encrypted using block ciphers in cipher block
chaining (CBC) mode. This flaw allows a man-in-the-middle (MITM)
attacker to decrypt a selected byte of a cipher text in as few as 256
tries if they are able to force a victim application to repeatedly send
the same data over newly created SSL 3.0 connections.

This update adds support for Fallback SCSV to mitigate this issue.

CVE-2014-3567

A memory leak flaw was found in the way an OpenSSL handled failed
session ticket integrity checks. A remote attacker could exhaust all
available memory of an SSL/TLS or DTLS server by se...

Read the Full Advisory

Severity
critical
Lowest
Low
Medium
High
Critical

Package: openssl
CVE ID: CVE-2014-3513 CVE-2014-3566 CVE-2014-3567 CVE-2014-3568

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