Adobe admits users vulnerable after downloading Reader

Confirms updater doesn't always work, says it's reevaluating patch install process

Adobe has acknowledged that some users are vulnerable to attack after downloading an outdated version of Reader from its Web site, and said it is now reevaluating how it updates the popular PDF reader.

Yesterday, Brad Arkin, Adobe's director for product security and privacy, responded to claims by Danish security vendor Secunia that the currently-available version of Reader contains numerous bugs, and that Adobe's update process can leave users vulnerable for days or even weeks.

"We do single-dot releases, such as [Reader] 9.1, as full installers," explained Arkin, referring to the version Adobe released in mid-March to plug several holes, including one that had been exploited by hackers since early January. "The double-dot releases, like 9.1.1 and 9.1.2, those are for patches only and work only with a full-installed version in place."

The single-dot releases, such as Reader 9.1, must meet a different quality level for testing than the patch releases. Doing it that way will "get security fixes faster to users," Arkin said. "That helps keep users up-to-date."

Patch-only updates are common in software, but the problem with Adobe's practice is that it continues to provide an out-of-date edition that many times isn't updated with the latest patches, argued Secunia on Monday. Adobe has issued two security updates since Reader 9.1's debut. The first, released May 12, patched a "zero-day" bug in Reader, while the second, issued June 9, fixed 13 or more flaws.

"Adobe does have the Adobe Updater, which will eventually update Reader to the patched versions," said Mikkel Winther, the manager of Secunia's PSI partner program yesterday. "But sometimes it takes days or weeks for the updater to come up."

By default Adobe's updater pings the company server once a week.

Adobe's Arkin admitted that the updater doesn't always work as it's supposed to. "The intended behavior of the updater is that when you launch Reader for the first time, it will check if there are any updates available," he said. "That's its intended behavior, but there are a lot of [PC] configuration factors that might lead to different behavior."

Arkin confirmed that a first-launch of Reader sometimes fails to trigger Adobe's updater on PCs in its own labs. The updater failed to appear after launching Reader 9.1 for the first time on three different Windows PCs that Computerworld tested.

Read more: Australian PC users worse at patching Windows than New Zealanders, but both lead US: Secunia

Abode is also reevaluating how frequently its software updater pings the company's servers to see whether a patch is ready for download. Currently, the updater defaults to weekly intervals, with monthly intervals the only other option. "We decided that's the right amount of time after feedback from enterprises," said Arkin. He declined to specify what changes Adobe is considering for the updater, and whether those may involve more interval choices for users or a shorter interval, perhaps a daily check for updates, that would be set by default.

"Security patching is also part of the overall security process," Arkin said.

Two months ago, Adobe announced it had seen the security light, and promised it would root out bugs in older code, speed up the patching process and release regular security updates for Reader. The first quarterly update was issued last month.

Hackers continue to hammer Reader. According to New York-based CA today, there are "a vast number of malicious PDF files in circulation on the Internet," many of them pitching multiple exploits at Windows users.

Join the newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection

Tags adobe readerexploits and vulnerabilitiessecuniaadobepdf bug

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Gregg Keizer

Computerworld
Show Comments

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Ratchada Dunn

Sharp PN-40TC1 Huddle Board

The Huddle Board’s built in program; Sharp Touch Viewing software allows us to easily manipulate and edit our documents (jpegs and PDFs) all at the same time on the dashboard.

George Khoury

Sharp PN-40TC1 Huddle Board

The biggest perks for me would be that it comes with easy to use and comprehensive programs that make the collaboration process a whole lot more intuitive and organic

David Coyle

Brother PocketJet PJ-773 A4 Portable Thermal Printer

I rate the printer as a 5 out of 5 stars as it has been able to fit seamlessly into my busy and mobile lifestyle.

Kurt Hegetschweiler

Brother PocketJet PJ-773 A4 Portable Thermal Printer

It’s perfect for mobile workers. Just take it out — it’s small enough to sit anywhere — turn it on, load a sheet of paper, and start printing.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?