CVE-2021-28562 Adobe Acrobat Reader use-after-free could lead to arbitrary code execution
An attacker can achieve arbitrary code execution by tricking a user into opening a malicious file that triggers a use-after-free error via JavaScript search queries.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-28562?
CVE-2021-28562 is a high-severity use after free vulnerability in Adobe Acrobat Dc, published on 28 Jun 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Acrobat Reader DC versions versions 2021.001.20150 (and earlier), 2020.001.30020 (and earlier) and 2017.011.30194 (and earlier) are affected by a Use After Free vulnerability when executing search queries through Javascript. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Weakness: CWE-416
Which versions are affected by CVE-2021-28562?
It affects 2 products.
Products include Adobe Acrobat Dc, Adobe Acrobat Reader Dc.
How do I fix CVE-2021-28562?
No fix has been published for CVE-2021-28562 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2021-28562 being exploited?
There is no known exploitation of CVE-2021-28562 in the wild and no public exploit code.
Other vulnerabilities in Adobe Acrobat Dc
Sources
Also known as GHSA-hhvh-8925-wvqg.