Incident: "Security Flaw in Export-Grade Encryption Software Vulnerability"

Published Date: 2015-03-03

Postmortem Analysis
Timeline 1. The software failure incident, known as the "FREAK attack," happened in March 2015. [Article 34968, Article 34521]
System 1. Apple web browsers 2. Browser built into Google’s Android software
Responsible Organization 1. US government policy requiring weaker encryption in software sold overseas [34968, 34521] 2. Technology companies that continued to use the weaker encryption in their software [34968, 34521]
Impacted Organization 1. Millions of people surfing the web on Apple and Google devices [34968, 34521] 2. Popular websites including American Express, Groupon, Kohl’s, Marriott, and some government agencies [34968] 3. Whitehouse.gov, NSA.gov, and FBI.gov [34521]
Software Causes 1. The software failure incident was caused by a security flaw known as the "FREAK attack," which stemmed from an old government policy that required US software makers to use weaker security in encryption programs sold overseas [34968, 34521]. 2. The vulnerability affected Apple web browsers and the browser built into Google’s Android software, but not Google’s Chrome browser or current browsers from Microsoft or Firefox-maker Mozilla [34968]. 3. The flaw resulted from the export of weak encryption products due to past US government restrictions, which persisted in widely used software [34521]. 4. Researchers discovered they could force browsers to use weaker encryption, making it easier for hackers to break the encryption and potentially steal sensitive information [34521]. 5. The software vulnerability affected about a third of all encrypted websites, including popular sites like those operated by American Express, Groupon, Kohl’s, Marriott, and some government agencies [34968]. 6. The flaw was named "FREAK" for Factoring attack on RSA-EXPORT Keys, highlighting the weakness in encryption keys [34521].
Non-software Causes 1. Old government policy requiring US software makers to use weaker security in encryption programs sold overseas due to national security concerns [34968, 34521] 2. Former US government policy that forbade the export of strong encryption and required weaker "export-grade" products to be shipped to customers in other countries [34521] 3. Restrictions on exporting strong encryption were lifted in the late 1990s, but the weaker encryption remained in widely used software [34521]
Impacts 1. Millions of people were left vulnerable to hackers while surfing the web on Apple and Google devices due to the "FREAK attack" security flaw, potentially exposing sensitive information entered on websites [Article 34968, Article 34521]. 2. About a third of all encrypted websites, including popular sites like American Express, Groupon, Kohl’s, Marriott, and some government agencies, were vulnerable to the FREAK attack [Article 34968]. 3. The vulnerability affected Apple web browsers and the browser built into Google’s Android software, but not Google’s Chrome browser or current browsers from Microsoft or Mozilla [Article 34968]. 4. Hackers could exploit the weaker encryption to steal passwords and personal information, potentially launching broader attacks on websites [Article 34521]. 5. The flaw highlighted the danger of unintended security consequences resulting from government policies that require weakening encryption, which could provide access to hackers [Article 34968, Article 34521]. 6. The FREAK flaw could be used for "man-in-the-middle" attacks, making encrypted traffic easy to read, and impacting users accessing the internet from various locations [Article 34521]. 7. More than one third of encrypted websites worldwide were vulnerable to the FREAK attack, including news organizations, retailers, and financial services sites [Article 34521]. 8. Efforts were made to alert affected government agencies and companies to correct the problem before it became public, with some websites already fixed and security patches being prepared by Apple and Google [Article 34521].
Preventions 1. Implementing stronger encryption standards and avoiding the use of weaker "export-grade" encryption products [34968, 34521]. 2. Regularly updating software to patch vulnerabilities and address security flaws promptly [34968, 34521]. 3. Avoiding government policies that require weakening of encryption code, as they can inadvertently provide access to hackers [34968, 34521]. 4. Conducting thorough security testing and audits to identify and address vulnerabilities before they can be exploited by hackers [34521].
Fixes 1. Updating software: Both Apple and Google have created software updates to fix the "FREAK attack" flaw [34968, 34521]. 2. Corrective actions by commercial website operators: Many commercial website operators are taking corrective action after being notified about the vulnerability [34968]. 3. Mitigating the problem: Akamai, a leading cloud services company, reported efforts to mitigate the problem in a blog post [34521]. 4. Implementing security patches: Apple is preparing a security patch that will be available next week for both its computers and mobile devices [34521]. 5. Providing patches to partners: Google has developed a patch for the Android operating system's browser and provided it to partners for deployment [34521].
References 1. Researchers at several research institutions [Article 34968] 2. University of Michigan computer scientist Zakir Durumeric [Article 34968] 3. Matthew Green, a computer security researcher at Johns Hopkins University [Article 34968] 4. Edward Felten, a professor of computer science and public affairs at Princeton [Article 34968] 5. Researchers who discovered the problem [Article 34521] 6. Matthew D. Green, a Johns Hopkins cryptographer [Article 34521] 7. Christopher Soghoian, principal technologist for the ACLU [Article 34521] 8. Karthikeyan Bhargavan, a researcher at the French computer science lab INRIA [Article 34521] 9. Nadia Heninger, a University of Pennsylvania cryptographer [Article 34521] 10. University of Michigan computer science researchers J. Alex Halderman [Article 34521]

Software Taxonomy of Faults

Category Option Rationale
Recurring multiple_organization (a) The software failure incident related to the FREAK attack vulnerability affected multiple organizations. Both Apple and Google devices were vulnerable to the FREAK attack due to the use of weaker encryption software [34968, 34521]. Apple and Google have since released software updates to fix the vulnerability in their devices [34968, 34521]. (b) The FREAK attack vulnerability impacted a wide range of websites, including those operated by American Express, Groupon, Kohl’s, Marriott, and some government agencies [34968]. Additionally, more than one-third of encrypted websites worldwide were found to be vulnerable to the FREAK attack, including news organizations, retailers, and financial services sites [34521].
Phase (Design/Operation) design, operation (a) The software failure incident related to the design phase can be attributed to the old government policy that required US software makers to use weaker security in encryption programs sold overseas due to national security concerns. This policy, which was abandoned over a decade ago, contributed to the vulnerability known as the "FREAK attack" [34968, 34521]. (b) The software failure incident related to the operation phase can be linked to the fact that many popular websites and internet browsers continued to accept the weaker software or could be tricked into using it, making it easier for hackers to break the encryption and steal sensitive information when visitors type it into a website [34968, 34521].
Boundary (Internal/External) within_system, outside_system (a) within_system: The software failure incident related to the FREAK attack was primarily caused by an old government policy that required US software makers to use weaker security in encryption programs sold overseas [34968, 34521]. This policy led to the proliferation of weaker encryption software that was eventually integrated into widely used systems, making them vulnerable to attacks. The vulnerability in the encryption protocols used by popular websites and browsers allowed hackers to exploit the weakness and potentially steal sensitive information [34968, 34521]. (b) outside_system: The software failure incident was also influenced by external factors such as the lifting of the export restrictions on strong encryption in the late 1990s. This led to the continued use of weaker "export-grade" encryption products that were susceptible to attacks, even though the restrictions had been removed [34968, 34521]. Additionally, the discovery of the FREAK attack highlighted the unintended consequences of government policies that required weakening encryption for national security reasons, which ultimately created a security vulnerability that could be exploited by hackers [34968, 34521].
Nature (Human/Non-human) non-human_actions, human_actions (a) The software failure incident in the articles was primarily due to non-human actions. The incident was caused by a security flaw known as the "FREAK attack," which stemmed from an old government policy that required US software makers to use weaker security in encryption programs sold overseas [34968, 34521]. This policy led to the proliferation of weaker encryption software that was eventually integrated into widely used software, making millions of websites vulnerable to hacking without direct human involvement in introducing the flaw. (b) However, human actions also played a role in exacerbating the situation. The article mentions that top U.S. officials have called for technology companies to provide "doors" into systems to aid surveillance efforts, which could potentially weaken security and create unintended consequences that hackers can exploit [34521]. Additionally, the article highlights the danger of government policies that require any weakening of encryption code, as they could inadvertently provide access to hackers [34968].
Dimension (Hardware/Software) hardware, software (a) The software failure incident related to the "FREAK attack" vulnerability was primarily due to contributing factors that originated in hardware. The vulnerability stemmed from an old government policy that required US software makers to use weaker security in encryption programs sold overseas due to national security concerns. This weaker encryption got baked into widely used software and hardware, making millions of Apple and Google devices vulnerable to hacking [34968, 34521]. (b) The software failure incident was also due to contributing factors that originated in software. The vulnerability allowed hackers to exploit the weaker encryption implemented in software, making it easier for them to break the encryption that's supposed to prevent digital eavesdropping. Software updates were required to fix the "FREAK attack" flaw in Apple and Google devices, indicating a software-related issue [34968, 34521].
Objective (Malicious/Non-malicious) malicious, non-malicious (a) The software failure incident related to the FREAK attack can be categorized as a malicious failure. The incident was caused by a security flaw known as the FREAK attack, which left millions of people vulnerable to hackers while surfing the web on Apple and Google devices [34968]. The vulnerability was a result of an old government policy that required US software makers to use weaker security in encryption programs sold overseas, which could be exploited by hackers to break encryption and steal sensitive information [34968]. The incident was not accidental but rather a deliberate exploitation of the weakness in the encryption protocols. (b) The software failure incident can also be categorized as a non-malicious failure. The weakness in encryption protocols that led to the FREAK attack was a result of outdated government policies that required the use of weaker encryption, which inadvertently made its way back into widely used software without being noticed until the discovery of the vulnerability [34521]. The incident highlights the unintended consequences of past decisions and the dangers of using outdated encryption standards, rather than a deliberate attempt to harm the system.
Intent (Poor/Accidental Decisions) poor_decisions, accidental_decisions (a) The software failure incident related to the FREAK attack can be attributed to poor decisions made in the past by the U.S. government. The incident stemmed from an old government policy that required U.S. software makers to use weaker security in encryption programs sold overseas due to national security concerns. This policy, which was abandoned over a decade ago, led to the proliferation of weaker encryption software that eventually made its way back into the United States, leaving millions of users vulnerable to hacking [34968, 34521]. (b) Additionally, the incident can also be seen as a result of accidental decisions or unintended consequences. The export-grade encryption with 512 bits, which was considered weak and outdated, resurfaced in widely used software due to the past government restrictions on encryption strength. Researchers were surprised to find that this weaker encryption was still being used and could be exploited by hackers, highlighting the unintended consequences of past decisions [34968, 34521].
Capability (Incompetence/Accidental) development_incompetence, accidental (a) The software failure incident related to development incompetence is evident in the articles. The vulnerability known as the "FREAK attack" was caused by an old government policy that required US software makers to use weaker security in encryption programs sold overseas. This policy, which was abandoned over a decade ago, led to the continued acceptance of weaker software by popular websites and internet browsers, making it easier for hackers to break encryption [34968, 34521]. (b) The software failure incident related to accidental factors is also highlighted in the articles. The flaw resulting from the export-grade encryption was unintentionally introduced due to former US government policies that restricted the export of strong encryption, leading to the proliferation of weaker encryption in widely used software. This weaker encryption went unnoticed until it was discovered by researchers recently, showcasing the unintended consequences of such policies [34968, 34521].
Duration temporary The software failure incident related to the FREAK attack vulnerability can be considered as a temporary failure. This vulnerability was caused by the continued acceptance of weaker encryption software due to an old government policy that required US software makers to use weaker security in encryption programs sold overseas [34968, 34521]. The vulnerability was not a permanent failure but rather a result of specific circumstances, such as the outdated policy and the use of weaker encryption, which allowed for the exploitation of the flaw. The incident was temporary in the sense that it was not a fundamental flaw in the software itself but rather a consequence of historical decisions and practices that were later identified and addressed through software updates and corrective actions taken by companies and website operators [34968, 34521].
Behaviour omission, value, other (a) crash: The articles do not mention any instances of a crash where the system loses state and does not perform any of its intended functions. (b) omission: The software failure incident related to the FREAK attack can be categorized under omission. The vulnerability allowed hackers to exploit weaker encryption, leading to the omission of the system to perform its intended function of securely encrypting sensitive information [34968, 34521]. (c) timing: The articles do not mention any instances of the system performing its intended functions correctly but too late or too early. (d) value: The software failure incident can be categorized under the value behavior as the system performed its intended functions incorrectly by using weaker encryption, making it vulnerable to attacks [34968, 34521]. (e) byzantine: The articles do not mention any instances of the system behaving erroneously with inconsistent responses and interactions. (f) other: The other behavior exhibited by the software failure incident is the exploitation of an old government policy that required the use of weaker encryption, leading to a security flaw that left users vulnerable to hacking [34968, 34521].

IoT System Layer

Layer Option Rationale
Perception None None
Communication None None
Application None None

Other Details

Category Option Rationale
Consequence property, delay (a) death: People lost their lives due to the software failure (b) harm: People were physically harmed due to the software failure (c) basic: People's access to food or shelter was impacted because of the software failure (d) property: People's material goods, money, or data was impacted due to the software failure (e) delay: People had to postpone an activity due to the software failure (f) non-human: Non-human entities were impacted due to the software failure (g) no_consequence: There were no real observed consequences of the software failure (h) theoretical_consequence: There were potential consequences discussed of the software failure that did not occur (i) other: Was there consequence(s) of the software failure not described in the (a to h) options? What is the other consequence(s)? The articles do not mention any consequences related to death, physical harm, impact on basic needs, or harm to non-human entities due to the software failure incident. The main consequence discussed in the articles is the potential harm to people's data and personal information (property) as a result of the security flaw that left users vulnerable to hacking [34968, 34521]. The articles also highlight the delay caused by the need to fix the security flaw and the impact on encrypted websites and users until the vulnerability is addressed.
Domain information, finance, government (a) The software failure incident reported in the articles is related to the industry of information. The vulnerability known as the "FREAK attack" affected millions of people surfing the web on Apple and Google devices, potentially leaving them vulnerable to hackers. The flaw impacted popular websites, including those operated by American Express, Groupon, Kohl’s, Marriott, and some government agencies, compromising the security of sensitive information entered by visitors on these sites [Article 34968, Article 34521]. (h) The incident also has implications for the finance industry. The vulnerability in encryption programs could have allowed hackers to potentially steal passwords and other personal information from users, which could include financial data. This highlights the broader impact of such software failures on industries that involve manipulating and moving money for profit [Article 34521]. (l) Additionally, the government sector was affected by the software failure incident. Government websites, including Whitehouse.gov, NSA.gov, and FBI.gov, were among the supposedly secure sites that were vulnerable to hacking due to the encryption flaw. The issue raised concerns about the unintended consequences of past government policies that required weaker encryption, potentially compromising national security and public services [Article 34521].

Sources

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