- Detalji os-a: WN7
- Važnost: IMP
- Operativni sustavi: L
- Kategorije: LDE
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Debian Security Advisory DSA-3053-1 firstname.lastname@example.org
http://www.debian.org/security/ Thijs Kinkhorst
October 16, 2014 http://www.debian.org/security/faq
Package : openssl
CVE ID : CVE-2014-3513 CVE-2014-3566 CVE-2014-3567 CVE-2014-3568
Several vulnerabilities have been found in OpenSSL, the Secure Sockets
Layer library and toolkit.
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.
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.
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 sending a large number
of invalid session tickets to that server.
When OpenSSL is configured with “no-ssl3” as a build option, servers
could accept and complete a SSL 3.0 handshake, and clients could be
configured to send them.
For the stable distribution (wheezy), these problems have been fixed in
For the unstable distribution (sid), these problems have been fixed in
We recommend that you upgrade your openssl packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: email@example.com
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