CVE-2021-31323 Memory corruption in n/a
A remote attacker can trigger a heap buffer overflow in Telegram clients via malicious animated stickers, potentially leading to code execution or memory disclosure.
- 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-2021-31323?
CVE-2021-31323 is a medium-severity memory corruption vulnerability in n/a, published on 18 May 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
Telegram Android <7.1.0 (2090), Telegram iOS <7.1, and Telegram macOS <7.1 are affected by a Heap Buffer Overflow in the LottieParserImpl::parseDashProperty function of their custom fork of the rlottie library. A remote attacker might be able to access heap memory out-of-bounds on a victim device via a malicious animated sticker.
Weakness: CWE-787
Which versions are affected by CVE-2021-31323?
It affects 1 product.
Products include Telegram Telegram.
How do I fix CVE-2021-31323?
No fix has been published for CVE-2021-31323 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-2021-31323 being exploited?
There is no known exploitation of CVE-2021-31323 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-7fqj-v4vw-h2vm.