** Summary changed: - Critcial security vulnerabilties in docker < 1.3.2 + Critcial security vulnerabilties in docker < 1.3.3
** CVE added: http://www.cve.mitre.org/cgi- bin/cvename.cgi?name=2014-9357 ** Description changed: Today, we are releasing Docker 1.3.2 in order to address two critical security issues. This release also includes several bugfixes, including changes to the insecure-registry option. Below are CVE descriptions for the vulnerabilities addressed in this release. Docker 1.3.2 is available immediately for all supported platforms: https://docs.docker.com/installation/ - Docker Security Advisory [24 Nov 2014] ================================================================= ===================================================== [CVE-2014-6407] Archive extraction allowing host privilege escalation ===================================================== Severity: Critical Affects: Docker up to 1.3.1 The Docker engine, up to and including version 1.3.1, was vulnerable to extracting files to arbitrary paths on the host during ‘docker pull’ and ‘docker load’ operations. This was caused by symlink and hardlink traversals present in Docker's image extraction. This vulnerability could be leveraged to perform remote code execution and privilege escalation. Docker 1.3.2 remedies this vulnerability. Additional checks have been added to pkg/archive and image extraction is now performed in a chroot. No remediation is available for older versions of Docker and users are advised to upgrade. Related vulnerabilities discovered by Florian Weimer of Red Hat Product Security and independent researcher, Tõnis Tiigi. ================================================================= [CVE-2014-6408] Security options applied to image could lead to container escalation ================================================================= Severity: Critical Affects: Docker 1.3.0-1.3.1 Docker versions 1.3.0 through 1.3.1 allowed security options to be applied to images, allowing images to modify the default run profile of containers executing these images. This vulnerability could allow a malicious image creator to loosen the restrictions applied to a container’s processes, potentially facilitating a break-out. Docker 1.3.2 remedies this vulnerability. Security options applied to images are no longer consumed by the Docker engine and will be ignored. Users are advised to upgrade. ================================================================= Other changes: ================================================================= Besides the above CVEs, the 1.3.2 release allows administrators to pass a CIDR-formatted range of addresses for '—insecure-registry'. In addition, allowing a cleartext registry to exist on localhost is now default behavior. This change was made due to user feedback following the changes made in 1.3.1 to resolve CVE-2014-5277. + + --- + + Docker 1.3.3 has been released to address several vulnerabilities and is + immediately available for all supported platforms: + https://docs.docker.com/installation/ + + This release addresses vulnerabilities which could be exploited by a + malicious Dockerfile, image, or registry to compromise a Docker host, + modify images, or spoof official repository images. Note that today we + also expect to see the release of Docker 1.4.0, also containing these + fixes. While version 1.3.3 is a security-focused update, Docker 1.4.0 + will include over 180 new commits, primarily bug fixes. + + It is highly recommended that users upgrade to Docker Engine 1.3.3 or + higher. + + Please send any questions to secu...@docker.com. + + Docker Security Advisory [141211] + ---------------------------------------------------------------------------------------------------------- + + ============================================================= + [CVE-2014-9356] Path traversal during processing of absolute symlinks + ============================================================= + + Path traversal attacks are possible in the processing of absolute + symlinks. In checking symlinks for traversals, only relative links were + considered. This allowed path traversals to exist where they should have + otherwise been prevented. This was exploitable via both archive + extraction and through volume mounts. + + This vulnerability allowed malicious images or builds from malicious + Dockerfiles to write files to the host system and escape + containerization, leading to privilege escalation. + + We are releasing Docker 1.3.3 to address this vulnerability. Users are + highly encouraged to upgrade. + + Discovered by Tõnis Tiigi. + + =================================================================== + [CVE-2014-9357] Escalation of privileges during decompression of LZMA (.xz) archives + =================================================================== + + It has been discovered that the introduction of chroot for archive + extraction in Docker 1.3.2 had introduced a privilege escalation + vulnerability. Malicious images or builds from malicious Dockerfiles + could escalate privileges and execute arbitrary code as a privileged + root user on the Docker host by providing a malicious ‘xz’ binary. + + We are releasing Docker 1.3.3 to address this vulnerability. Only Docker + 1.3.2 is vulnerable. Users are highly encouraged to upgrade. + + Discovered by Tõnis Tiigi. + + ========================================================================= + [CVE-2014-9358] Path traversal and spoofing opportunities presented through image identifiers + ========================================================================= + + It has been discovered that Docker does not sufficiently validate Image + IDs as provided either via 'docker load' or through registry + communications. This allows for path traversal attacks, causing graph + corruption and manipulation by malicious images, as well as repository + spoofing attacks. + + We are releasing Docker 1.3.3 to address this vulnerability. Users are + highly encouraged to upgrade. + + Discovered by Eric Windisch of Docker, Inc. ** CVE added: http://www.cve.mitre.org/cgi- bin/cvename.cgi?name=2014-9356 ** CVE added: http://www.cve.mitre.org/cgi- bin/cvename.cgi?name=2014-9358 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1396572 Title: Critcial security vulnerabilties in docker < 1.3.3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/docker.io/+bug/1396572/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
