Cybersecurity

5732 readers

104 users here now

c/cybersecurity is a community centered on the cybersecurity and information security profession. You can come here to discuss news, post something interesting, or just chat with others.

THE RULES

Instance Rules

Be respectful. Everyone should feel welcome here.
No bigotry - including racism, sexism, ableism, homophobia, transphobia, or xenophobia.
No Ads / Spamming.
No pornography.

Community Rules

Idk, keep it semi-professional?
Nothing illegal. We're all ethical here.
Rules will be added/redefined as necessary.

If you ask someone to hack your "friends" socials you're just going to get banned so don't do that.

Learn about hacking

Hack the Box

Try Hack Me

Pico Capture the flag

Other security-related communities [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] [email protected]

Notable mention to [email protected]

founded 1 year ago

MODERATORS

[email protected]

New AMD SinkClose flaw helps install nearly undetectable malware (www.bleepingcomputer.com)

submitted 3 months ago by DocMcStuffin to c/[email protected]

20 comments fedilink hide all child comments

AMD is warning about a high-severity CPU vulnerability named SinkClose that impacts multiple generations of its EPYC, Ryzen, and Threadripper processors. The vulnerability allows attackers with Kernel-level (Ring 0) privileges to gain Ring -2 privileges and install malware that becomes nearly undetectable.

Tracked as CVE-2023-31315 and rated of high severity (CVSS score: 7.5), the flaw was discovered by IOActive Enrique Nissim and Krzysztof Okupski, who named privilege elevation attack 'Sinkclose.'

Full details about the attack will be presented by the researchers at tomorrow in a DefCon talk titled "AMD Sinkclose: Universal Ring-2 Privilege Escalation."

you are viewing a single comment's thread
view the rest of the comments

[–] thadah 12 points 3 months ago

I'd like to see the people that are for kernel-level anticheat running in their PCs 24/7 now.

Vanguard doesn't even let you play the game unless the anticheat has been active since boot afaik.

Every cybersec and even anyone minimally tech-savvy was saying this was a bad idea and what do you know, now we have objective evidence it is in fact a terrible, terrible idea.