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Debian DLA-361-1 : bouncycastle security update

medium Nessus Plugin ID 87266

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Synopsis

The remote Debian host is missing a security update.

Description

The Bouncy Castle Java library before 1.51 does not validate that a point is within the elliptic curve, which makes it easier for remote attackers to obtain private keys via a series of crafted elliptic curve Diffie Hellman (ECDH) key exchanges, aka an 'invalid curve attack.'

For Debian 6 'Squeeze', this issue has been fixed in version 1.44+dfsg-2+deb6u1 of bouncycastle.

Many thanks to upstream author Peter Dettmann who reviewed the backport that we prepared.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected packages.

See Also

https://lists.debian.org/debian-lts-announce/2015/12/msg00001.html

https://packages.debian.org/source/squeeze-lts/bouncycastle

Plugin Details

Severity: Medium

ID: 87266

File Name: debian_DLA-361.nasl

Version: 2.5

Type: local

Agent: unix

Published: 12/9/2015

Updated: 1/11/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libbcmail-java, p-cpe:/a:debian:debian_linux:libbcmail-java-doc, p-cpe:/a:debian:debian_linux:libbcmail-java-gcj, p-cpe:/a:debian:debian_linux:libbcpg-java, p-cpe:/a:debian:debian_linux:libbcpg-java-doc, p-cpe:/a:debian:debian_linux:libbcpg-java-gcj, p-cpe:/a:debian:debian_linux:libbcprov-java, p-cpe:/a:debian:debian_linux:libbcprov-java-doc, p-cpe:/a:debian:debian_linux:libbcprov-java-gcj, p-cpe:/a:debian:debian_linux:libbctsp-java, p-cpe:/a:debian:debian_linux:libbctsp-java-doc, p-cpe:/a:debian:debian_linux:libbctsp-java-gcj, cpe:/o:debian:debian_linux:6.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 12/8/2015

Reference Information

CVE: CVE-2015-7940