GitHub Squashes Killer SAML Flaw: Upgrade Your Enterprise Server Now!

Get ready to patch up your cyber sweaters, folks! GitHub just darned a hole with a 10.0 severity score, thwarting sneaky admin impersonators in the SAML SSO wardrobe of GitHub Enterprise Server. Update or risk a chilly data breach! #GitHubPatch #SAMLScramble 🛠️🔐

Hot Take:

Just when you thought your code was safely tucked away in your own server castle, a wild CVE-2024-4985 appears, proving that not even GitHub Enterprise Servers are immune to the universal law of “Everything can be hacked.” But fear not, dear GitHub warriors, for the mighty patch hammer has descended, squashing the authentication bypass bug that dared challenge the sanctity of your digital realm!

Key Points:

  • GitHub squashes a pesky bug (CVE-2024-4985) with a perfect villain score (CVSS v4: 10.0), threatening SAML SSO-authenticated GHES instances.
  • Attackers could potentially pull a digital Houdini, bypassing authentication and gaining admin powers without even saying “please.”
  • GHES is the digital fortress for code, where enterprises hoard their precious repositories like dragons with gold.
  • The vulnerability is a VIP-only party – it only affects instances fancy enough to enable encrypted assertions.
  • GitHub ships out updates like a SWAT team delivering bug-fixing justice, but with a few known quirks that might need a magic (tech support) touch.
Cve id: CVE-2024-4985
Cve state: PUBLISHED
Cve assigner short name: GitHub_P
Cve date updated: 05/20/2024
Cve description: An authentication bypass vulnerability was present in the GitHub Enterprise Server (GHES) when utilizing SAML single sign-on authentication with the optional encrypted assertions feature. This vulnerability allowed an attacker to forge a SAML response to provision and/or gain access to a user with site administrator privileges. Exploitation of this vulnerability would allow unauthorized access to the instance without requiring prior authentication. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.13.0 and was fixed in versions 3.9.15, 3.10.12, 3.11.10 and 3.12.4. This vulnerability was reported via the GitHub Bug Bounty program.

Need to know more?

Bug Bounty Bonanza

Imagine you're hosting a masquerade ball, and the uninvited guest is a vulnerability that could let any jester waltz in and take the throne. That's CVE-2024-4985 for you, but luckily, some eagle-eyed bug bounty hunter spotted the intruder, and GitHub's bouncers swiftly escorted it out of the party.

Self-hosted Sovereignty

For those who prefer their code repositories to reside in the proverbial basement rather than out gallivanting in the cloud, GHES is akin to a digital doomsday prepper's bunker. It's built for those who like their data like they like their coffee: within arm's reach and not floating somewhere in the ether.

Encrypted Assertions: A Double-Edged Sword

This whole debacle is about encrypted assertions, a feature that's like whispering sweet nothings to your server – meant for your ears only, safe from eavesdroppers. But in a twist of irony, it's this very feature that could've let attackers tango right into the admin panel.

Patchwork Quilt of Fixes

Github unfurled a patchwork quilt of updates to tuck in those vulnerable servers. It's like a bedtime story where the monster under the bed is banished, but now the nightlight might flicker, and the closet door might not shut all the way – a.k.a., the list of known update issues. But hey, better a quirky sidekick than a villain on the loose, right?

Update with Care (and Backup)

Even superheroes have a plan B (looking at you, Batman), and GHES users should too. Updating might feel like navigating a minefield with those known issues, but it's the lesser of two evils compared to leaving your server's drawbridge down for attackers to cross. So, update with care, have a backup spell ready, and maybe keep a tech wizard on speed dial.

Overall, it's like GitHub has been playing a high-stakes game of whack-a-mole, and this mole came dressed in a tuxedo, wielding a 10.0 CVSS score. The patches are out, but they're not without their quirks. Still, it's time to fortify your digital castle and update, lest ye want to face the digital dark ages!

Tags: authentication bypass, bug bounty, Encrypted Assertions, GitHub Enterprise Server, SAML Authentication, Secure Update, software vulnerability