CVE-2019-6740 Memory corruption in Galaxy S9
Remote attackers can execute arbitrary code via a heap-based buffer overflow in the ASN.1 parser, requiring user interaction to visit a malicious page or file.
- 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-2019-6740?
CVE-2019-6740 is a critical memory corruption vulnerability in Samsung Galaxy S9, published on 3 Jun 2019. 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
This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Samsung Galaxy S9 prior to January 2019 Security Update (SMR-JAN-2019 - SVE-2018-13467). User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the ASN.1 parser. When parsing ASN.1 strings, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-7472.
Which versions are affected by CVE-2019-6740?
It affects 1 product.
Products include Samsung Galaxy S9 Firmware.
How do I fix CVE-2019-6740?
No fix has been published for CVE-2019-6740 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-2019-6740 being exploited?
There is no known exploitation of CVE-2019-6740 in the wild and no public exploit code.
Other vulnerabilities in Samsung Galaxy S9
Sources
Also known as GHSA-pj75-2rhg-jmhv.