Adobe fixes 4 critical Reader bugs that were demonstrated at Tianfu Cup

Adobe released security updates to address multiple vulnerabilities affecting several products, including Acrobat and Reader.

Adobe patches for January address 41 vulnerabilities in Windows and macOS versions of Acrobat and Reader products, Illustrator, Adobe Bridge, InCopy, and InDesign. 22 of these vulnerabilities were reported through the ZDI program.

The software giant fixed a total of 26 flaws in Acrobat and Reader, the most severe ones are remote code execution (RCE) that were demonstrated at the Tianfu Cup. An attacker can exploit these vulnerabilitied by tricking the victim into opening a specially crafted PDF.

The four critical vulnerabilities that were demonstrated at the Chinese Tianfu Cup hacking contest are CVE-2021-44704, CVE-2021-44705, CVE-2021-44706, and CVE-2021-44707 (CVSS base score 7.8). The white hat hackers that demonstrated the issues in the Reader product earned a total of $150,000.

Other flaws in Acrobat and Reader can be exploited by attackers for privilege escalation, bypassing security features, triggering a DoS condition, and retrieving data from memory.

Adobe released security updates for InCopy that address three Critical-rated RCE flaws and one Important-rated privilege escalation issue. The updates for InDesign fixes two Critical-rated Out-of-bounds (OOB) Write flaws that could be exploited to execute arbitrary code on vulnerable systems and a Moderate Use-After-Free privilege escalation. The update for Bridge addresses six flaws, one of them in OOB Write is rated as Critical. The company also fixed two OOB Read bugs in Illustrator.

The company said that it is not aware of attacks in the wild exploiting the above issues.

Follow me on Twitter: @securityaffairs and Facebook

[adrotate banner=”9″]

[adrotate banner=”12″]

Pierluigi Paganini

(SecurityAffairs – hacking, IKEA)

[adrotate banner=”5″]

[adrotate banner=”13″]

Pierluigi Paganini

Pierluigi Paganini is member of the ENISA (European Union Agency for Network and Information Security) Threat Landscape Stakeholder Group and Cyber G7 Group, he is also a Security Evangelist, Security Analyst and Freelance Writer. Editor-in-Chief at "Cyber Defense Magazine", Pierluigi is a cyber security expert with over 20 years experience in the field, he is Certified Ethical Hacker at EC Council in London. The passion for writing and a strong belief that security is founded on sharing and awareness led Pierluigi to find the security blog "Security Affairs" recently named a Top National Security Resource for US. Pierluigi is a member of the "The Hacker News" team and he is a writer for some major publications in the field such as Cyber War Zone, ICTTF, Infosec Island, Infosec Institute, The Hacker News Magazine and for many other Security magazines. Author of the Books "The Deep Dark Web" and “Digital Virtual Currency and Bitcoin”.