CVE-2021-21089 Adobe Acrobat Reader DC URI Parsing Out-Of-Bounds Read
An attacker can escalate privileges by tricking a user into opening a malicious file in Adobe Acrobat Reader DC.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-21089?
CVE-2021-21089 is a low-severity memory corruption vulnerability in Adobe Acrobat Dc, published on 30 Sep 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by an out-of-bounds Read vulnerability. An unauthenticated attacker could leverage this vulnerability to locally escalate privileges 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-125
Which versions are affected by CVE-2021-21089?
It affects 2 products.
Products include Adobe Acrobat Dc, Adobe Acrobat Reader Dc.
How do I fix CVE-2021-21089?
No fix has been published for CVE-2021-21089 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-21089 being exploited?
There is no known exploitation of CVE-2021-21089 in the wild and no public exploit code.
Other vulnerabilities in Adobe Acrobat Dc
Sources
Also known as GHSA-4q2c-cjx7-rc9r.