CVE-2012-2826 in Chrome
Summary
by MITRE
Google Chrome before 20.0.1132.43 does not properly implement texture conversion, which allows remote attackers to cause a denial of service (out-of-bounds read) via unspecified vectors.
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Analysis
by VulDB Data Team • 03/25/2021
The vulnerability identified as CVE-2012-2826 represents a critical flaw in Google Chrome's graphics processing implementation that existed prior to version 20.0.1132.43. This issue stems from improper handling of texture conversion operations within the browser's rendering engine, specifically affecting how Chrome processes graphical elements when displaying web content. The flaw manifests as an out-of-bounds read condition that occurs during the texture conversion process, which is a fundamental operation in graphics rendering for web browsers. This type of vulnerability falls under the category of memory corruption issues that can lead to unpredictable behavior and system instability.
The technical implementation of this vulnerability involves Chrome's graphics subsystem where texture conversion operations are performed to render complex visual elements on web pages. When the browser encounters certain graphical content that requires texture conversion, the memory management routines fail to properly validate input parameters or boundaries, leading to memory access violations. This out-of-bounds read condition allows remote attackers to craft malicious web content that, when rendered by the vulnerable Chrome version, triggers the flawed texture conversion logic. The vulnerability's impact extends beyond simple denial of service as it can potentially be exploited to execute arbitrary code or cause browser crashes that may be leveraged in more sophisticated attack scenarios.
From an operational perspective, this vulnerability poses significant risks to users of older Chrome versions who may unknowingly encounter malicious web content that exploits this flaw. The denial of service aspect means that affected users could experience browser crashes or complete application hangs when visiting compromised websites, severely impacting productivity and user experience. The vulnerability's remote exploitation capability means that attackers do not need physical access to the target system and can deliver malicious payloads through standard web browsing activities. This makes the vulnerability particularly dangerous in enterprise environments where users may encounter untrusted web content regularly, and the automatic update mechanisms may not be immediately effective.
Security researchers have classified this vulnerability according to CWE standards as a memory error related to improper bounds checking in graphics processing components. The flaw aligns with ATT&CK techniques related to privilege escalation and remote code execution through browser exploitation. Organizations should prioritize immediate patching of affected Chrome installations to mitigate this risk, as the vulnerability was specifically addressed in Chrome version 20.0.1132.43. Additionally, implementing network-level protections such as web application firewalls and content filtering systems can provide additional defense in depth. Browser security policies should include regular update scheduling and user education about the importance of maintaining current software versions to prevent exploitation of known vulnerabilities. The incident underscores the critical importance of timely security updates and proper memory management practices in browser implementations to prevent similar issues from affecting user security and system stability.