Linux Security
Linux Security
Linux Security

Debian: DSA-2894-1: openssh security update

Date 05 Apr 2014
207
Posted By LinuxSecurity Advisories
Two vulnerabilities were discovered in OpenSSH, an implementation of the SSH protocol suite. The Common Vulnerabilities and Exposures project identifies the following problems:

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Debian Security Advisory DSA-2894-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
https://www.debian.org/security/                      Salvatore Bonaccorso
April 05, 2014                         https://www.debian.org/security/faq
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Package        : openssh
CVE ID         : CVE-2014-2532 CVE-2014-2653
Debian Bug     : 742513

Two vulnerabilities were discovered in OpenSSH, an implementation of the
SSH protocol suite. The Common Vulnerabilities and Exposures project
identifies the following problems:

CVE-2014-2532

    Jann Horn discovered that OpenSSH incorrectly handled wildcards in
    AcceptEnv lines. A remote attacker could use this issue to trick
    OpenSSH into accepting any environment variable that contains the
    characters before the wildcard character.

CVE-2014-2653

    Matthew Vernon reported that if a SSH server offers a
    HostCertificate that the ssh client doesn't accept, then the client
    doesn't check the DNS for SSHFP records. As a consequence a
    malicious server can disable SSHFP-checking by presenting a
    certificate.

    Note that a host verification prompt is still displayed before
    connecting.

For the oldstable distribution (squeeze), these problems have been fixed in
version 1:5.5p1-6+squeeze5.

For the stable distribution (wheezy), these problems have been fixed in
version 1:6.0p1-4+deb7u1.

For the unstable distribution (sid), these problems have been fixed in
version 1:6.6p1-1.

We recommend that you upgrade your openssh 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: This email address is being protected from spambots. You need JavaScript enabled to view it.

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