CVE-2021-26730 spx_restservice Login_handler_func Subfunction Stack-Based Buffer Overflow
A stack-based buffer overflow in the Lanner IAC-AST2500A firmware allows attackers to execute arbitrary code with root privileges.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-26730?
CVE-2021-26730 is a critical memory corruption vulnerability in Lanner Inc IAC-AST2500A, published on 24 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A stack-based buffer overflow vulnerability in a subfunction of the Login_handler_func function of spx_restservice allows an attacker to execute arbitrary code with the same privileges as the server user (root). This issue affects: Lanner Inc IAC-AST2500A standard firmware version 1.10.0.
Which versions are affected by CVE-2021-26730?
It affects 1 product.
Products include Lannerinc Iac-Ast2500a Firmware.
How do I fix CVE-2021-26730?
No fix has been published for CVE-2021-26730 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-2021-26730 being exploited?
There is no known exploitation of CVE-2021-26730 in the wild and no public exploit code.
Other vulnerabilities in Lanner Inc IAC-AST2500A
- CVE-2021-26727 spx_restservice SubNet_handler_func Multiple Command Injections and Stack-Based Buffer Overflows
- CVE-2021-26728 spx_restservice KillDupUsr_func Command Injection and Stack-Based Buffer Overflow
- CVE-2021-26729 spx_restservice Login_handler_func Command Injection and Multiple Stack-Based Buffer Overflows
- CVE-2021-26731 spx_restservice modifyUserb_func Command Injection and Multiple Stack-Based Buffer Overflows
- CVE-2021-26732 spx_restservice First_network_func Broken Access Control
Sources
Also known as GHSA-wj6f-q7qm-jq4x.