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AlertSecurity · Web flaws2 min read

Hackers hit PHP2Shell flaws four days before the public warning

Amazon says attackers used the PHP2Shell flaws on October 17, four days before anyone was told. Websites built on PHP are the concern.

By the Dashline deskSource: Techmeme
Hackers hit PHP2Shell flaws four days before the public warning
Photo: Techmeme
Act this week
What happenedAmazon says attackers began exploiting the PHP2Shell bugs on October 17, four days before the public disclosure.
Who is affectedAnyone who runs a website or web software built on PHP, including businesses that rely on a web host or agency.
What to do
  1. 1Ask your web host or IT provider whether your sites use PHP and are affected.
  2. 2Install any security updates released for PHP2Shell as soon as they are available.
  3. 3Check your provider's security notices for guidance on this specific issue.
  4. 4Watch for odd site behavior, such as unknown files or sudden slowdowns, and report it quickly.

Attackers were already using a set of serious website bugs, called PHP2Shell, four days before the public heard about them. Amazon Web Services says it saw the first attempts on October 17. The flaws were made public on October 21. At least one attacker had a head start.

What changed

The feed text says Amazon logged attempts to use the PHP2Shell bugs several days before the warning went out. It also describes the bugs as now being used broadly, though the wording is cut off in the material available. Amazon's analysts say at least one actor was behind the early attacks. Most website owners had no chance to prepare.

Who it affects

PHP is a common tool that runs behind many websites. That means plenty of businesses could be affected, often without knowing it. If your site was built by an agency or sits with a web host, the people who look after it are the ones who can answer the question. If you do not run a website, there is nothing here for you to do.

What is not known yet

The material does not say exactly how the bugs work, which PHP versions or products are affected, or whether fixes are available. It also does not say who the attackers are or how many sites have been hit. Those details matter, and they may come out in the coming days.

What to do

The alert box above lists the steps. The short version is to ask your web host or IT provider whether your sites are exposed, and make sure any fix gets installed once it is released.

What happens next

Expect hosts and software makers to publish guidance. Because attacks began before the warning, checking for signs of earlier trouble is as important as updating.

The takeaway

If your business website runs on PHP, ask your host or IT provider today whether PHP2Shell affects it and whether it is updated.

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