-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

- -------------------------------------------------------------------------
Debian Security Advisory DSA-3222-1                   security@debian.org
http://www.debian.org/security/                        Alessandro Ghedini
April 12, 2015                         http://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package        : chrony
CVE ID         : CVE-2015-1821 CVE-2015-1822 CVE-2015-1853
Debian Bug     : 782160

Miroslav Lichvar of Red Hat discovered multiple vulnerabilities in chrony,
an alternative NTP client and server:

CVE-2015-1821

    Using particular address/subnet pairs when configuring access control
    would cause an invalid memory write. This could allow attackers to
    cause a denial of service (crash) or execute arbitrary code.

CVE-2015-1822

    When allocating memory to save unacknowledged replies to authenticated
    command requests, a pointer would be left uninitialized, which could
    trigger an invalid memory write. This could allow attackers to cause a
    denial of service (crash) or execute arbitrary code.

CVE-2015-1853

    When peering with other NTP hosts using authenticated symmetric
    association, the internal state variables would be updated before the
    MAC of the NTP messages was validated. This could allow a remote
    attacker to cause a denial of service by impeding synchronization
    between NTP peers.

For the stable distribution (wheezy), these problems have been fixed in
version 1.24-3.1+deb7u3.

For the unstable distribution (sid), these problems have been fixed in
version 1.30-2.

We recommend that you upgrade your chrony 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
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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=NyVY
-----END PGP SIGNATURE-----


-- 
To UNSUBSCRIBE, email to debian-security-announce-REQUEST@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact
 listmaster@lists.debian.org
Archive: https://lists.debian.org/20150412153508.C3E26368@bendel.debian.org