RHSA-2008:0629 - Security Advisory

Topic

Red Hat Network Satellite Server version 5.1.1 is now available. This
update includes fixes for a number of security issues in Red Hat Network
Satellite Server Solaris client components.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

Description

This release corrects several security vulnerabilities in components
shipped as part of the Red Hat Network Satellite Server Solaris client. In
a typical operating environment, these components are not used by the
Satellite Server in a vulnerable manner. These security updates will reduce
risk should these components be used by other applications.

Several flaws in Zlib were discovered. An attacker could create a
carefully-crafted compressed stream that would cause an application to
crash if the stream was opened by a user. (CVE-2005-2096, CVE-2005-1849)

A buffer overflow was discovered in the OpenSSL SSL_get_shared_ciphers()
utility function. An attacker could send a list of ciphers to an
application that used this function and overrun a buffer (CVE-2006-3738).

A flaw in the SSLv2 client code was discovered. If a client application
used OpenSSL to create an SSLv2 connection to a malicious server, that
server could cause the client to crash. (CVE-2006-4343)

An attack on OpenSSL PKCS #1 v1.5 signatures was discovered. Where an RSA
key with exponent 3 was used an attacker could, potentially, forge a PKCS
#1 v1.5 signature that would be incorrectly verified by implementations
that do not check for excess data in the RSA exponentiation result of the
signature. This issue affected applications that use OpenSSL to verify
X.509 certificates as well as other uses of PKCS #1 v1.5. (CVE-2006-4339)

OpenSSL contained a software work-around for a bug in SSL handling in
Microsoft Internet Explorer version 3.0.2. It is enabled in most servers
that use OpenSSL to provide support for SSL and TLS. This work-around was
vulnerable to a man-in-the-middle attack which allowed a remote user to
force an SSL connection to use SSL 2.0, rather than a stronger protocol,
such as SSL 3.0 or TLS 1.0. (CVE-2005-2969)

During OpenSSL parsing of certain invalid ASN.1 structures, an error
condition was mishandled. This could result in an infinite loop which
consumed system memory (CVE-2006-2937).

Certain public key types could take disproportionate amounts of time to
process in OpenSSL, leading to a denial of service. (CVE-2006-2940)

A flaw was discovered in the Python repr() function's handling of
UTF-32/UCS-4 strings. If an application used the repr() function on
untrusted data, this could lead to a denial of service or, possibly, allow
the execution of arbitrary code with the privileges of the application
using the flawed function. (CVE-2006-4980)

A flaw was discovered in the strxfrm() function of Python's locale module.
Strings generated by this function were not properly NULL-terminated. This
could, potentially, cause disclosure of data stored in the memory of an
application using this function. (CVE-2007-2052)

Multiple integer overflow flaws were discovered in Python's imageop module.
If an application used the imageop module to process untrusted images, it
could cause the application to crash, enter an infinite loop, or, possibly,
execute arbitrary code with the privileges of the Python interpreter.
(CVE-2007-4965)

A stack-based buffer overflow was discovered in the Python interpreter,
which could allow a local user to gain privileges by running a script with
a long name from the current working directory. (CVE-2006-1542)

Users of Red Hat Network Satellite Server should upgrade to these updated
packages, which contain backported patches to correct these issues.

Solution

Before applying this update, make sure that all previously-released errata
relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use the Red
Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

Affected Products

• Red Hat Network Satellite 5.1 (for RHEL Mainframe) 5.1 s390x
• Red Hat Network Satellite 5.1 (for RHEL Mainframe) 5.1 s390
• Red Hat Network Satellite 5.1 (for RHEL Server) 5.1 x86_64
• Red Hat Network Satellite 5.1 (for RHEL Server) 5.1 i386

Fixes

• BZ - 235093 - CVE-2007-2052 python off-by-one locale.strxfrm() (possible memory disclosure)
• BZ - 295971 - CVE-2007-4965 python imageop module heap corruption
• BZ - 430640 - CVE-2006-1542 python buffer overflow
• BZ - 430641 - CVE-2006-4980 python repr unicode buffer overflow
• BZ - 430649 - CVE-2005-1849 zlib DoS
• BZ - 430650 - CVE-2005-2096 zlib DoS
• BZ - 430651 - CVE-2006-4343 openssl sslv2 client code
• BZ - 430652 - CVE-2006-3738 openssl get_shared_ciphers overflow
• BZ - 430654 - CVE-2006-2940 openssl public key DoS
• BZ - 430655 - CVE-2006-2937 openssl ASN.1 DoS
• BZ - 430659 - CVE-2006-4339 openssl signature forgery
• BZ - 430660 - CVE-2005-2969 openssl mitm downgrade attack

CVEs

• CVE-2006-1542
• CVE-2007-4965
• CVE-2007-2052
• CVE-2006-4980
• CVE-2006-4343
• CVE-2006-2937
• CVE-2006-3738
• CVE-2006-2940
• CVE-2006-4339
• CVE-2005-2096
• CVE-2005-1849
• CVE-2005-2969

References

• http://www.redhat.com/security/updates/classification/#moderate