CVE-2014-5350 : Détail

Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.

Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.

SEC Consult Vulnerability Lab Security Advisory < 20140716-3 > ======================================================================= title: Multiple critical vulnerabilities product: Bitdefender GravityZone vulnerable version: <5.1.11.432 fixed version: >=5.1.11.432 impact: critical homepage: http://www.bitdefender.com found: 2014-05-22 by: Stefan Viehböck SEC Consult Vulnerability Lab https://www.sec-consult.com ======================================================================= Vendor description: ------------------- Bitdefender GravityZone lets enterprises control and protect the heterogeneous environments of today. The solution combines highly optimized virtualization aware security with leading detection technologies and a fresh, but proven, architecture. It empowers administrators with features adapted to reduce the daily security hassle and eliminate the need for point solutions with unified protection across virtualized, physical, and mobile endpoints. Unlike other solutions that bolt-on modules to an aging architecture, the GravityZone Control Center dashboard has been designed specifically to unify monitoring and security management in a single simple and accessible interface. Source: http://download.bitdefender.com/resources/media/materials/business/en/datasheet-gravityzone-brief.pdf Business recommendation: ------------------------ Attackers are able to completely compromise the Bitdefender GravityZone solution as they can gain system and database level access. Furthermore attackers can manage all endpoints. The Bitdefender GravityZone can be used as an entry point into the target infrastructure (lateral movement, privilege escalation). It is highly recommended by SEC Consult not to use this software until a thorough security review has been performed by security professionals and all identified issues have been resolved. Vulnerability overview/description: ----------------------------------- 1) Unauthenticated local file disclosure (Web Console, Update Server) Unauthenticated users can read arbitrary files from the filesystem with the privileges of the "nginx" operating system user. These files include configuration files containing sensitive information such as clear text passwords which can be used in further attacks. Separate vulnerabilities affecting both Web Console and Update Server were found. 2) Insecure service configuration / design issues The MongoDB database which is offered via the network by default (TCP ports 27017, 28017) can be accessed using hardcoded credentials which can't be changed. The overall system design requires the database to be accessible via the network. All relevant GravityZone configuration data can be accessed and changed. This includes the user table. Excerpt from the documentation describing the TCP port 27017: "Default port used by the Communication Server and Control Center to access the Database." 3) Missing authentication Authentication is not required for certain scripts in the web UI. This allows unauthenticated attackers to execute administrative functions without prior authentication. Proof of concept: ----------------- 1) Unauthenticated local file disclosure (Web Console, Update Server) Arbitrary files can be downloaded via a vulnerable script: https://<host>/webservice/CORE/downloadFullKitEpc/a/1?id=../../../../../etc/passwd The Update Server is vulnerable to local file disclosure as well. Arbitrary files can be downloaded using the following HTTP request: GET /%2e%2e/%2e%2e/%2e%2e/%2e%2e/%2e%2e/%2e%2e/%2e%2e/%2e%2e/%2e%2e/etc/passwd HTTP/1.1 Host: <host>:7074 2) Insecure service configuration / Design issues Attackers can connect to MongoDB on TCP ports 27017 and 28017 using the following hardcoded credentials: Username: <removed> Password: <removed> Detailed proof of concept exploits have been removed for this vulnerability. 3) Missing authentication Authentication is not required for the following script: /webservice/CORE/downloadSignedCsr (Unauthenticated certificate upload) Vulnerable / tested versions: ----------------------------- The vulnerabilities have been verified to exist in GravityZone 5.1.5.386, which was the most recent version at the time of discovery. Vendor contact timeline: ------------------------ 2014-05-26: Sending responsible disclosure policy and requesting encryption keys. 2014-05-26: Vendor responds providing encryption keys. 2014-05-26: Sending advisory and proof of concept exploit via encrypted channel. 2014-05-26: Vendor confirms receipt. 2014-06-04: Requesting status update. 2014-06-14: Vendor provides status update. Update will be released "End of June". 2014-06-26: Vendor provides status update. Update for issue #1 and #3 will be released June 30. Update for issue #2 will be released at the end of July. 2014-06-27: Requesting info about other affected products. Clarifying disclosure of issue #2. 2014-07-09: Vendor confirms that update for issue #1 and #3 has been shipped and KB article for issue #2 will be released. 2014-07-15: Requesting version numbers of affected products. 2014-07-16: SEC Consult releases coordinated security advisory. Solution: --------- Update to a more recent version of Bitdefender GravityZone _and_ implement mitigations for the issue #2. More information can be found at: http://www.bitdefender.com/support/how-to-configure-iptables-firewall-rules-on-gravityzone-for-restricting-outside-access-to-mongodatabase-1265.html Workaround: ----------- No workaround available. Advisory URL: ------------- https://www.sec-consult.com/en/Vulnerability-Lab/Advisories.htm ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ SEC Consult Vulnerability Lab SEC Consult Vienna - Bangkok - Frankfurt/Main - Montreal - Singapore - Vilnius Headquarter: Mooslackengasse 17, 1190 Vienna, Austria Phone: +43 1 8903043 0 Fax: +43 1 8903043 15 Mail: research at sec-consult dot com Web: https://www.sec-consult.com Blog: http://blog.sec-consult.com Twitter: https://twitter.com/sec_consult EOF Stefan Viehböck / @2014