'Huge' Number of Mac Apps Open to Hijacking From Sparkle Updater Vulnerability

A pair of vulnerabilities in the framework that some Mac apps use to receive automatic updates leaves them open to man-in-the-middle attacks, according to a report from Ars Technica covering a security flaw that was first discovered by a security researcher named Radek in late January.

Apps that use a vulnerable version of Sparkle and an unencrypted HTTP channel for server updates are at risk of being hijacked to transmit malicious code to end users. The Sparkle framework is used by apps outside of the Mac App Store to facilitate automatic software updates.

Some of the affected apps are widely downloaded titles like Camtasia, Duet Display, uTorrent, and Sketch. A proof of concept attack was shared by Simone Margaritelli using an older version of VLC, which was recently updated to patch the flaw. The vulnerabilities were tested on both OS X Yosemite and the most recent version of OS X El Capitan.

sparklevulnerability


A "huge" number of apps are said to be at risk, but as Ars Technica points out, it is difficult to tell exactly which apps that use Sparkle are open to attack. GitHub users have compiled a list of apps that use Sparkle, but not all use the vulnerable version and not all transfer data over non-secured HTTP channels.

Apps downloaded through the Mac App Store are not affected as OS X's built in software update mechanism does not use Sparkle.

Sparkle has released a fix in the newest version of the Sparkle Updater, but it will take some time for Mac apps to implement the patched framework. Ars Technica recommends concerned users with potentially vulnerable apps installed avoid using unsecured Wi-Fi networks or do so only via a VPN.

Tag: Sparkle

Popular Stories

iPhone SE 4 Vertical Camera Feature

iPhone SE 4 Rumored to Use Same Rear Chassis as iPhone 16

Friday July 19, 2024 7:16 am PDT by
Apple will adopt the same rear chassis manufacturing process for the iPhone SE 4 that it is using for the upcoming standard iPhone 16, claims a new rumor coming out of China. According to the Weibo-based leaker "Fixed Focus Digital," the backplate manufacturing process for the iPhone SE 4 is "exactly the same" as the standard model in Apple's upcoming iPhone 16 lineup, which is expected to...
iPhone 16 Pro Sizes Feature

iPhone 16 Series Is Just Two Months Away: Everything We Know

Monday July 15, 2024 4:44 am PDT by
Apple typically releases its new iPhone series around mid-September, which means we are about two months out from the launch of the iPhone 16. Like the iPhone 15 series, this year's lineup is expected to stick with four models – iPhone 16, iPhone 16 Plus, iPhone 16 Pro, and iPhone 16 Pro Max – although there are plenty of design differences and new features to take into account. To bring ...
bsod

Crowdstrike Says Global IT Outage Impacting Windows PCs, But Mac and Linux Hosts Not Affected

Friday July 19, 2024 3:12 am PDT by
A widespread system failure is currently affecting numerous Windows devices globally, causing critical boot failures across various industries, including banks, rail networks, airlines, retailers, broadcasters, healthcare, and many more sectors. The issue, manifesting as a Blue Screen of Death (BSOD), is preventing computers from starting up properly and forcing them into continuous recovery...
iphone 14 lineup

Cellebrite Unable to Unlock iPhones on iOS 17.4 or Later, Leak Reveals

Thursday July 18, 2024 4:18 am PDT by
Israel-based mobile forensics company Cellebrite is unable to unlock iPhones running iOS 17.4 or later, according to leaked documents verified by 404 Media. The documents provide a rare glimpse into the capabilities of the company's mobile forensics tools and highlight the ongoing security improvements in Apple's latest devices. The leaked "Cellebrite iOS Support Matrix" obtained by 404 Media...
Apple Watch Series 9

2024 Apple Watch Lineup: Key Changes We're Expecting

Tuesday July 16, 2024 7:59 am PDT by
Apple is seemingly planning a rework of the Apple Watch lineup for 2024, according to a range of reports from over the past year. Here's everything we know so far. Apple is expected to continue to offer three different Apple Watch models in five casing sizes, but the various display sizes will allegedly grow by up to 12% and the casings will get taller. Based on all of the latest rumors,...
tinypod apple watch

TinyPod Turns Your Apple Watch Into an iPod

Wednesday July 17, 2024 3:18 pm PDT by
If you have an old Apple Watch and you're not sure what to do with it, a new product called TinyPod might be the answer. Priced at $79, the TinyPod is a silicone case with a built-in scroll wheel that houses the Apple Watch chassis. When an Apple Watch is placed inside the TinyPod, the click wheel on the case is able to be used to scroll through the Apple Watch interface. The feature works...

Top Rated Comments

engram Avatar
110 months ago
This will give you a list of what is on your system.
find /Applications -name Sparkle.framework | awk -F'/' '{print $3}' | awk -F'.' '{print $1}'
Score: 24 Votes (Like | Disagree)
jdillings Avatar
110 months ago
This is why the app store was a good thing
Score: 23 Votes (Like | Disagree)
KALLT Avatar
110 months ago
@engram ('https://forums.macrumors.com/threads/huge-number-of-mac-apps-open-to-hijacking-from-sparkle-updater-vulnerability.1955488/members/engram.513277/'): This does not work if you have applications in sub-folders. Use this one instead, it also prints the Sparkle version (credit to an Ars commenter):
find /Applications/ -path '*Sparkle.framework*/Info.plist' -exec echo {} \; -exec grep -A1 CFBundleShortVersionString '{}' \; | grep -v CFBundleShortVersionString

Anything below version 1.13.1 is potentially affected.


Edit:

Apparently, this one is even better, because it shows which applications actually connect via HTTP instead of HTTPS. This should narrow it down further:
for i in /Applications/*/Contents/Info.plist; do defaults read "$i" SUFeedURL 2>/dev/null; done
Score: 10 Votes (Like | Disagree)
Michaelgtrusa Avatar
110 months ago
Nothing surprises me anymore.
Score: 7 Votes (Like | Disagree)
jclo Avatar
110 months ago
This will give you a list of what is on your system.
find /Applications -name Sparkle.framework | awk -F'/' '{print $3}' | awk -F'.' '{print $1}'
Not all of these are going to be affected -- only those using a version of Sparkle prior to 1.13.1 have the potential to be vulnerable. And of those, some may be using an encrypted HTTP channel to receive updates from the server, meaning they're not affected.
Score: 7 Votes (Like | Disagree)
C DM Avatar
110 months ago
OS X isn't safe no more. Another day, another victim on news. It's 187 murder on Apps....RIP apps.
(pours out little liquor on their apps.)
Not really an OS exploit, but an app/service exploit.
Score: 5 Votes (Like | Disagree)