Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2015.3119
bouncycastle security update
15 December 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: bouncycastle
Publisher: Debian
Operating System: Debian GNU/Linux 7
Debian GNU/Linux 8
UNIX variants (UNIX, Linux, OSX)
Android
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2015-7940
Original Bulletin:
http://www.debian.org/security/2015/dsa-3417
Comment: This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running bouncycastle check for an updated version of the software
for their operating system.
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Debian Security Advisory DSA-3417-1 security@debian.org
https://www.debian.org/security/ Luciano Bello
December 14, 2015 https://www.debian.org/security/faq
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Package : bouncycastle
CVE ID : CVE-2015-7940
Debian Bug : 802671
Tibor Jager, Jörg Schwenk, and Juraj Somorovsky, from Horst Görtz
Institute for IT Security, published a paper in ESORICS 2015 where they
describe an invalid curve attack in Bouncy Castle Crypto, a Java library
for cryptography. An attacker is able to recover private Elliptic Curve
keys from different applications, for example, TLS servers.
More information:
http://web-in-security.blogspot.ca/2015/09/practical-invalid-curve-attacks.html
Practical Invalid Curve Attacks on TLS-ECDH:
http://euklid.org/pdf/ECC_Invalid_Curve.pdf
For the oldstable distribution (wheezy), this problem has been fixed
in version 1.44+dfsg-3.1+deb7u1.
For the stable distribution (jessie), this problem has been fixed in
version 1.49+dfsg-3+deb8u1.
For the unstable distribution (sid), this problem has been fixed in
version 1.51-2.
We recommend that you upgrade your bouncycastle 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: debian-security-announce@lists.debian.org
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