Hash: SHA512

Package        : strongswan
Version        : 4.5.2-1.5+deb7u9
CVE ID         : CVE-2017-9022 CVE-2017-9023

Two denial of service vulnerabilities were identified in strongSwan, an
IKE/IPsec suite, using Google's OSS-Fuzz fuzzing project.

CVE-2017-9022

    RSA public keys passed to the gmp plugin aren't validated sufficiently
    before attempting signature verification, so that invalid input might
    lead to a floating point exception and crash of the process.
    A certificate with an appropriately prepared public key sent by a peer
    could be used for a denial-of-service attack.

CVE-2017-9023

    ASN.1 CHOICE types are not correctly handled by the ASN.1 parser when
    parsing X.509 certificates with extensions that use such types. This could
    lead to infinite looping of the thread parsing a specifically crafted
    certificate.

For Debian 7 "Wheezy", these problems have been fixed in version
4.5.2-1.5+deb7u9.

We recommend that you upgrade your strongswan packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

Debian LTS: DLA-973-1: strongswan security update

June 1, 2017
Two denial of service vulnerabilities were identified in strongSwan, an IKE/IPsec suite, using Google's OSS-Fuzz fuzzing project

Summary

CVE-2017-9022

RSA public keys passed to the gmp plugin aren't validated sufficiently
before attempting signature verification, so that invalid input might
lead to a floating point exception and crash of the process.
A certificate with an appropriately prepared public key sent by a peer
could be used for a denial-of-service attack.

CVE-2017-9023

ASN.1 CHOICE types are not correctly handled by the ASN.1 parser when
parsing X.509 certificates with extensions that use such types. This could
lead to infinite looping of the thread parsing a specifically crafted
certificate.

For Debian 7 "Wheezy", these problems have been fixed in version
4.5.2-1.5+deb7u9.

We recommend that you upgrade your strongswan packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS


Severity
Package : strongswan
Version : 4.5.2-1.5+deb7u9
CVE ID : CVE-2017-9022 CVE-2017-9023

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