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A zero-day (also known as a 0-day) is a vulnerability in software or hardware that is typically unknown to the vendor and for which no patch or other fix is available. The vendor thus has zero days to prepare a patch, as the vulnerability has already been described or exploited.
Log4Shell (CVE-2021-44228) is a zero-day vulnerability reported in November 2021 in Log4j, a popular Java logging framework, involving arbitrary code execution. [2] [3] The vulnerability had existed unnoticed since 2013 and was privately disclosed to the Apache Software Foundation, of which Log4j is a project, by Chen Zhaojun of Alibaba Cloud's security team on 24 November 2021.
Their manifesto states: "ZERT members work together as a team to release a non-vendor patch when a so-called "0day" (zero-day) exploit appears in the open which poses a serious risk to the public, to the infrastructure of the Internet or both. The purpose of ZERT is not to "crack" products, but rather to "uncrack" them by averting security ...
The Exploited are a Scottish punk rock band from Edinburgh, formed in 1978 by Stevie Ross and Terry Buchan, with Buchan soon replaced by his brother Wattie Buchan. They signed to Secret Records in March 1981, [ 1 ] and their debut EP, Army Life , and debut album, Punks Not Dead , were both released that year. [ 1 ]
EternalBlue [5] is a computer exploit software developed by the U.S. National Security Agency (NSA). [6] It is based on a vulnerability in Microsoft Windows that allowed users to gain access to any number of computers connected to a network.
[1] [2] [3] A Cybersecurity and Infrastructure Security Agency alert reported that the attacks using the exploited started in June 2020 or earlier. [4] The attacks were believed to be the third major data breach against the U.S. in the previous year behind the 2020 United States federal government data breach and the 2021 Microsoft Exchange ...
The resulting patch was added to Red Hat's issue tracker on 21 March 2014. [42] Stephen N. Henson applied the fix to OpenSSL's version control system on 7 April. [43] The first fixed version, 1.0.1g, was released on the same day. As of 21 June 2014, 309,197 public web servers remained vulnerable. [13]
Shellshock, also known as Bashdoor, [1] is a family of security bugs [2] in the Unix Bash shell, the first of which was disclosed on 24 September 2014.Shellshock could enable an attacker to cause Bash to execute arbitrary commands and gain unauthorized access [3] to many Internet-facing services, such as web servers, that use Bash to process requests.