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Tag: Heartbleed

Heartbleed is a security bug disclosed in April 2014 in the OpenSSL cryptography library, which is a widely used implementation of the Transport Layer Security (TLS) protocol. Heartbleed may be exploited regardless of whether the party using a vulnerable OpenSSL instance for TLS is a server or a client. It results from improper input validation (due to a missing bounds check) in the implementation of the TLS heartbeat extension, thus the bug’s name derives from “heartbeat”. The vulnerability is classified as a buffer over-read,  a situation where more data can be read than should be allowed.

Heartbleed is registered in the Common Vulnerabilities and Exposures system as CVE-2014-0160. The federal Canadian Cyber Incident Response Centre issued a security bulletin advising system administrators about the bug. A fixed version of OpenSSL was released on April 7, 2014, on the same day Heartbleed was publicly disclosed.

At the time of disclosure, some 17% (around half a million) of the Internet’s secure web servers certified by trusted authorities were believed to be vulnerable to the attack, allowing theft of the servers’ private keys and users’ session cookies and passwords. The Electronic Frontier Foundation, Ars Technica, and Bruce Schneider all deemed the Heartbleed bug “catastrophic”. Forbes cybersecurity columnist Joseph Steinberg wrote, “Some might argue that [Heartbleed] is the worst vulnerability found (at least in terms of its potential impact) since commercial traffic began to flow on the Internet.”

A British Cabinet spokesman recommended that “People should take advice on changing passwords from the websites they use… Most websites have corrected the bug and are best placed to advise what action, if any, people need to take.” On the day of disclosure, the Tor Project advised anyone seeking “strong anonymity or privacy on the Internet” to “stay away from the Internet entirely for the next few days while things settle.”

As of May 20, 2014, 1.5% of the 800,000 most popular TLS-enabled websites were still vulnerable to Heartbleed.

TLS implementations other than OpenSSL, such as GnuTLS, Mozilla’s Network Security Services, and the TLS stack used by Microsoft products, were not affected because the defect existed in the OpenSSL’s implementation of TLS rather than in the Internet protocol itself.

Nothing like unauth'd hijacking, Heartbleed-style bugs to patch ASAP Oracle has published an out-of-band software update to address a handful of security flaws in parts of the PeopleSoft HR software.…
"JoltandBleed" memory leak gives attackers full access to business applications.
The security week in review Roundup  As ever, it's been a doozy of a week for cybersecurity, or lack thereof.

The Equifax saga just keeps giving, the SEC admitted it was thoroughly pwned, and Slack doesn't bother to sign its Linux versions. We do spoil you so, Reg readers.

And that was only yesterday. Here's the rest of the week's shenanigans we didn't get round to.…
Optionsbleed is especially threatening for people in shared hosting environments.
A technological boom in medicine both encouraged medical institutions to use exclusively information systems in processing data and led to the emergence of new types of technological equipment and personal devices that can be used to interact with traditional systems and networks.

This means that the threats that are relevant for them can also be relevant for medical systems.
HackerOne is bringing bug hunting and software testing to open source developers to help make open source software more secure and safer to use. A lot of modern tools and technologies depend on open source software, so a security flaw can wind up h...
A new type of data leak has come to light that could impact millions of people around the globe.

Google Project Zero, the research effort to find and fix critical software security flaws, reported that a vulnerability on the Cloudflare security service could enable the leak of passwords and data.

According to Cloudflare, the flaw could have allowed leaks of sensitive data from thousands of websites over a six-month period.

This incident has been dubbed Cloudbleed by some people in the cyber-security community because the threat was potentially as serious as the "Heartbleed" OpenSSL cryptography flaw that was reported in 2014 which posed a serious security threat to thousands of websites.

Cloudflare says it has patched the data leak flaw and moved quickly to purge any leaked data that may have circulated on search engines. While the full scope of the Cloudflare leak and exactly how many users were affected hasn’t been disclosed, this is the latest in a string of recent data privacy threats to affect internet users worldwide.

This slide show provides more details about the cause of the flaw and discusses why Cloudbleed is a serious problem.
You may have a problem lurking in your open source components and not know it.
Start making a list...
Potential scope of issue evokes comparisons to Heartbleed.
Heartbleed-style classic buffer overrun blunder strikes in 2017 Big-name websites leaked people's private encryption keys and personal information into strangers' browsers, due to a Cloudflare bug uncovered by Google security researchers.…
"Ticketbleed" bug in F5 firewalls is no Heartbleed, but it still poses a threat.
The OpenSSL Project has addressed some moderate-severity security flaws, and administrators should be particularly diligent about applying the patches since there are still 200,000 systems vulnerable to the Heartbleed flaw.OpenSSL updated the 1.0.2 ...