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Softphones — learn more about it — The Hacker News

Critical Remote Hacking Flaws Disclosed in Linphone and MicroSIP Softphones

Critical Remote Hacking Flaws Disclosed in Linphone and MicroSIP Softphones

October 14, 2021Ravie Lakshmanan

Multiple security vulnerabilities have been disclosed in softphone software from Linphone and MicroSIP that could be exploited by an unauthenticated remote adversary to crash the client and even extract sensitive information like password hashes by simply making a malicious call. The vulnerabilities, which were discovered by Moritz Abrell of German pen-testing firm SySS GmbH, have since been addressed by the respective manufacturers following responsible disclosure. Softphones are essentially software-based phones that mimic desk phones and allow for making telephone calls over the Internet without the need for using dedicated hardware. At the core of the issues are the SIP services offered by the clients to connect two peers to facilitate telephony services in IP-based mobile networks. SIP aka Session Initiation Protocol is a  signaling protocol  that’s used to control interactive communication sessions, such as voice, video, chat and instant messaging, as well as games and v


UAH – News

Photo of Marcus Jefferson, Jasmine Le and Carter Grimmeisen

From left, the members of Binary Opposition are Marcus Jefferson, Jasmine Le and Carter Grimmeisen.

Courtesy Photo

Binary Opposition, a team of three University of Alabama in Huntsville (UAH) students, won the academic category and a $5,000 prize in Cyber Cup capture the flag cybersecurity competition at the recent National Cyber Summit in Huntsville.

The team is composed of lead Jasmine Le, a senior in computer science; Carter Grimmeisen, a senior in computer science; and Marcus Jefferson, a senior in information systems. All three are from Huntsville and enrolled in UAH’s Joint Undergraduate Master’s Program (JUMP) program that allows undergraduate students to study at the graduate level. They all are pursuing master’s degrees at UAH, a part of the University of Alabama System.

The trio split the prize money between them. With 4,690 points total, Binary Opposition placed fifth in overall competition.

In the contest, participants are given a number of true-to-life challenges that all result in a text-based flag, Grimmeisen explains. These challenges are worth points, depending on difficulty, and they mirror the challenges professionals would face.

“The challenges range from things like exploiting a vulnerable web application, to reverse engineering software binaries, to deciphering encrypted data provided to us. It’s all about recognizing attack vectors, and knowing what tools and techniques we can leverage to take advantage of them,” he says.

“The competition was 12 hours in total, spread across three four-hour windows,” Grimmeisen says. “The academic division is exactly the same as the professional division except that the only eligible participants for this category are active students.”

The challenges provide teams with experience in situations that blue and red team cyber security professionals may encounter, says Jefferson.

“We compete in these competitions as a team because it is invaluable to take the concepts that we learn as students and actually see the industry applicable side of things, whether it be through…


Cyber security researcher reacts following the largest social media outage ever | Mobile County Alabama News

MOBILE, Ala. (WALA) — If you use Facebook or any of its apps, you may have been in the dark for a second time this week.

Another outage hit Facebook users early Friday afternoon, but it didn’t last as long as the one Monday that kept users offline for about five hours.

Facebook went on Twitter this afternoon to apologize about today’s problems.

And while it does not appear the outages were due to a hack, the possibility of a hack should be a reminder to us all that the information we share online is vulnerable.

And for some, Monday and Friday’s Facebook outages were more than an inconvenience.

“Some people can use it, and when it goes down can walk away from it,” said Dr. Michael Black. “There are other people that can literally panic about it. Why is it down? Why can’t I see my friends? I can’t communicate. They depend on it to communicate. They depend on it for other daily activities to do things.”

Black, who teaches at the University of South Alabama, also researches cyber security and digital forensics. He says the fallout from the outages could have people rethinking their reliance on social media.

“I think for a lot of people, it might be trust,” Black said. “As far as trusting if the service is going to be available or not. How can I know that it’s going to be there? What’s going to be the availability of it? When I need it, can I get to it?” 

That sentiment is shared by Brandon Nero, who uses Facebook heavily as a supply chain manager. But he also worries about the security.

“How safe is the information that I have?” Nero asked. “Which kind of makes me wonder if I should pull back from this being my primary means of communication.”

So, what can you do if you don’t feel confident that your information is staying private?

Experts recommend changing your social media passwords, and on accounts linked to your Facebook page

Also be on the lookout for fake accounts.

Be aware of…