CVE-2014-8178 in Docker Engine
Summary
by MITRE
Docker Engine before 1.8.3 and CS Docker Engine before 1.6.2-CS7 do not use a globally unique identifier to store image layers, which makes it easier for attackers to poison the image cache via a crafted image in pull or push commands.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 12/09/2024
The vulnerability identified as CVE-2014-8178 affects Docker Engine versions prior to 1.8.3 and CS Docker Engine versions prior to 1.6.2-CS7, representing a significant security flaw in container image handling mechanisms. This issue stems from the absence of globally unique identifiers when storing image layers within the Docker engine's cache system, creating a fundamental weakness that adversaries can exploit to manipulate the image caching process. The vulnerability specifically targets the pull and push operations that are core functions of Docker's image management workflow.
The technical flaw manifests in the Docker engine's storage architecture where image layers lack unique identifiers that would distinguish them across different repositories or registries. This design oversight means that when Docker processes image pull or push commands, it relies on potentially ambiguous layer identifiers that can be manipulated by attackers. The absence of proper unique identification creates opportunities for cache poisoning attacks where malicious actors can craft specially designed images that exploit the lack of unique layer identifiers to overwrite legitimate cached layers with malicious content. This vulnerability directly relates to CWE-200, which addresses the exposure of sensitive information through improper handling of identifiers and data structures.
The operational impact of this vulnerability extends beyond simple cache manipulation to potentially compromise entire container deployment pipelines and supply chain security. Attackers can leverage this weakness to inject malicious code into container images that are subsequently pulled by other users or systems, creating a propagation vector that can affect multiple deployments across different environments. The vulnerability undermines the integrity of Docker's image caching mechanism, which is fundamental to efficient container operations and security practices. When exploited, this vulnerability can lead to supply chain attacks where legitimate images are replaced with malicious variants, potentially compromising the security of containerized applications across various organizations.
Mitigation strategies for CVE-2014-8178 primarily focus on upgrading to affected Docker Engine versions that have implemented proper globally unique identifier handling for image layers. Organizations should immediately update their Docker installations to versions 1.8.3 or later for standard Docker Engine, and 1.6.2-CS7 or later for CS Docker Engine to address this vulnerability. Additionally, implementing strict image verification processes, including content addressable storage validation and image signing mechanisms, can provide additional layers of protection. Network segmentation and registry access controls should be enhanced to limit the scope of potential exploitation, while regular security audits of container images and registries should be conducted to detect any signs of cache poisoning attempts. The ATT&CK framework categorizes this vulnerability under T1584, which addresses the use of compromised credentials and supply chain attacks, highlighting the importance of maintaining image integrity throughout the container lifecycle.