5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
Debian Security Advisory DSA-3417-1 [email protected]
https://www.debian.org/security/ Luciano Bello
December 14, 2015 https://www.debian.org/security/faq
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: [email protected]
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 7 | all | bouncycastle | < 1.44+dfsg-3.1+deb7u1 | bouncycastle_1.44+dfsg-3.1+deb7u1_all.deb |
Debian | 6 | amd64 | libbcprov-java-gcj | < 1.44+dfsg-2+deb6u1 | libbcprov-java-gcj_1.44+dfsg-2+deb6u1_amd64.deb |
Debian | 6 | i386 | libbctsp-java-gcj | < 1.44+dfsg-2+deb6u1 | libbctsp-java-gcj_1.44+dfsg-2+deb6u1_i386.deb |
Debian | 7 | mips | libbcpg-java-gcj | < 1.44+dfsg-3.1+deb7u1 | libbcpg-java-gcj_1.44+dfsg-3.1+deb7u1_mips.deb |
Debian | 7 | armel | libbcprov-java-gcj | < 1.44+dfsg-3.1+deb7u1 | libbcprov-java-gcj_1.44+dfsg-3.1+deb7u1_armel.deb |
Debian | 6 | all | libbcmail-java | < 1.44+dfsg-2+deb6u1 | libbcmail-java_1.44+dfsg-2+deb6u1_all.deb |
Debian | 7 | ia64 | libbctsp-java-gcj | < 1.44+dfsg-3.1+deb7u1 | libbctsp-java-gcj_1.44+dfsg-3.1+deb7u1_ia64.deb |
Debian | 7 | s390x | libbctsp-java-gcj | < 1.44+dfsg-3.1+deb7u1 | libbctsp-java-gcj_1.44+dfsg-3.1+deb7u1_s390x.deb |
Debian | 7 | kfreebsd-amd64 | libbcpg-java-gcj | < 1.44+dfsg-3.1+deb7u1 | libbcpg-java-gcj_1.44+dfsg-3.1+deb7u1_kfreebsd-amd64.deb |
Debian | 7 | all | libbcpg-java | < 1.44+dfsg-3.1+deb7u1 | libbcpg-java_1.44+dfsg-3.1+deb7u1_all.deb |