Unspecified vulnerability in Zope Object Database (ZODB) before 3.8.2, when certain Zope Enterprise Objects (ZEO) database sharing is enabled, allows remote attackers to execute arbitrary Python code via vectors involving the ZEO network protocol.

Several remote vulnerabilities have been discovered in python-zodb, a set of tools for using ZODB, that could lead to arbitrary code execution in the worst case. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2009-0668     The ZEO server doesn't restrict the callables when     unpickling data received from a malicious client which     can be used by an attacker to execute arbitrary Python     code on the server by sending certain exception pickles.
    This also allows an attacker to import any importable     module as ZEO is importing the module containing a     callable specified in a pickle to test for a certain     flag.

  - CVE-2009-0669     Due to a programming error, an authorization method in     the StorageServer component of ZEO was not used as an     internal method. This allows a malicious client to     bypass authentication when connecting to a ZEO server by     simply calling this authorization method.

The update also limits the number of new object ids a client can request to 100 as it would be possible to consume huge amounts of resources by requesting a big batch of new object ids. No CVE id has been assigned to this.

Several remote vulnerabilities have been discovered in the zope, a feature-rich web application server written in python, that could lead to arbitrary code execution in the worst case. The Common Vulnerabilities and Exposures project identified the following problems :

  - CVE-2009-0668     Due to a programming error an authorization method in     the StorageServer component of ZEO was not used as an     internal method. This allows a malicious client to     bypass authentication when connecting to a ZEO server by     simply calling this authorization method.

  - CVE-2009-0668     The ZEO server doesn't restrict the callables when     unpickling data received from a malicious client which     can be used by an attacker to execute arbitrary python     code on the server by sending certain exception pickles.
    This also allows an attacker to import any importable     module as ZEO is importing the module containing a     callable specified in a pickle to test for a certain     flag.

  - The update also limits the number of new object ids a     client can request to 100 as it would be possible to     consume huge amounts of resources by requesting a big     batch of new object ids. No CVE id has been assigned to     this.

The oldstable distribution (etch), this problem has been fixed in version 2.9.6-4etch2 of zope2.9.

It was discovered that the Zope Object Database (ZODB) database server (ZEO) improperly filtered certain commands when a database is shared among multiple applications or application instances. A remote attacker could send malicious commands to the server and execute arbitrary code. (CVE-2009-0668)

It was discovered that the Zope Object Database (ZODB) database server (ZEO) did not handle authentication properly when a database is shared among multiple applications or application instances. A remote attacker could use this flaw to bypass security restrictions.
(CVE-2009-0669)

It was discovered that Zope did not limit the number of new object ids a client could request. A remote attacker could use this flaw to consume a huge amount of resources, leading to a denial of service.
(No CVE identifier).

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

ID	Name	Product	Family	Severity
53861	Debian DSA-2234-1 : zodb - several vulnerabilities	Nessus	Debian Local Security Checks	high
44728	Debian DSA-1863-1 : zope2.10/zope2.9 - several vulnerabilities	Nessus	Debian Local Security Checks	high
42146	Ubuntu 6.06 LTS / 8.04 LTS / 8.10 / 9.04 : zope3 vulnerabilities (USN-848-1)	Nessus	Ubuntu Local Security Checks	high

Detections

Analytics

CVE-2009-0668

critical

Tenable Plugins

high

high

high