Hackers Feast on Aging Apache Flink Flaw: CISA Rings Alarm Bells for Federal Patch Parade

Beware, federal agencies: Hackers are exploiting a geriatric Apache Flink flaw without endpoint protection. CISA’s saying patch or perish by June 13th! #CybersecurityTimeBomb 🕒💥💻

Hot Take:

Oh CISA, you nostalgic bunch, reminiscing about exploits of yesteryears like they’re vintage wine. Adding a three-year-old flaw to the party list now? That’s like warning us about a storm that’s already soaked our socks. But hey, better late than never when it comes to patching up old holes, right? Dust off those Apache Flinks, folks – it’s updating time!

Key Points:

  • CISA’s fashionably late addition to the KEV catalog: the vintage CVE-2020-17519 flaw from Apache Flink.
  • Apache Flink versions 1.11.0 to 1.11.2 are like Swiss cheese, but versions 1.11.3 and 1.12.0 have patched up the holes.
  • June 13th is D-Day for federal agencies to either patch up or part with their vulnerable software.
  • Private sector, you’re not off the hook – hackers don’t discriminate, so button up those digital raincoats.
  • Mystery surrounds the exploiters and victims, as CISA plays their intel cards close to the chest.
Title: Apache Flink directory traversal attack: reading remote files through the REST API
Cve id: CVE-2020-17519
Cve state: PUBLISHED
Cve assigner short name: apache
Cve date updated: 03/02/2021
Cve description: A change introduced in Apache Flink 1.11.0 (and released in 1.11.1 and 1.11.2 as well) allows attackers to read any file on the local filesystem of the JobManager through the REST interface of the JobManager process. Access is restricted to files accessible by the JobManager process. All users should upgrade to Flink 1.11.3 or 1.12.0 if their Flink instance(s) are exposed. The issue was fixed in commit b561010b0ee741543c3953306037f00d7a9f0801 from apache/flink:master.

Need to know more?

Time-Traveling Exploits

A trip down memory lane takes us back to an era of simpler times when a vulnerability in Apache Flink – CVE-2020-17519 – was just a twinkle in a hacker's eye. Discovered in the wild and untamed January of 2021, this relic of a flaw allowed mischievous cyber bandits to read files on the JobManager's local filesystem through a REST interface that was a little too welcoming. It's like leaving your diary in the school library – someone's bound to peek.

The Patchwork Quilt

The Apache Software Foundation, those diligent digital tailors, stitched up this tear in the fabric of cyberspace faster than you can say "zero-day." If you're still rocking Flink 1.11.2 or its older siblings, it's time to upgrade to the snazzy 1.11.3 or the even fresher 1.12.0. Consider it a cyber makeover.

The Procrastinator's Deadline

CISA, playing the role of stern parent, has drawn a line in the sandbox. June 13th is the last call for federal agencies to either slap on the patch or dump the dodgy software. Procrastinators beware: this is one deadline you don't want to ghost. And for the private sector, consider this your engraved invitation to the update party – no RSVP needed, just show up patched.

The Secretive Saga Continues

As for who's behind this digital mischief and who's taken the brunt of it, CISA is keeping those cards pressed against their vest. But let's face it, in the world of cybersecurity, some secrets are as closely guarded as the Colonel's 11 herbs and spices. So, while we may not know the players or the stakes, we do know the game: patch or perish.

Meanwhile, in the Land of TechRadar Pro...

Over in the kingdom of TechRadar Pro, where the newsletters flow with milk and honey, you can find all sorts of cyber-treasures. Need a robust firewall to keep out the digital dragons? They've got a list. Looking for the Excalibur of endpoint protection tools? They've got the scoop. And in a plot twist, the admin of BreachForums has been sentenced to a lengthy 20 years of supervised freedom. It's like a cyber soap opera, and you've got front-row seats.

The Chronicler of Cyber Sagas

Our scribe for this tale is Sead, a seasoned chronicler hailing from the far-off lands of Sarajevo. With over a decade of tales under his belt, this bard has spun yarns for the likes of Al Jazeera Balkans and educated the masses in the art of content writing. When he's not regaling us with stories of cyber skirmishes, he's deciphering runes about the cloud, IoT, 5G, and VPNs. A true renaissance man in the digital age.

Tags: Access Control Vulnerability, Apache Flink, CISA advisory, CVE-2020-17519, federal cybersecurity, Open-Source Framework, Software Patching