CVE-2023-43338

Cesanta mjs v2.20.0 was discovered to contain a function pointer hijacking vulnerability via the function mjs_get_ptr()

published September 22, 2023

CVSS
โ€”
EPSS
1%
Percentile
62.0
In the wild
Unconfirmed
What it is

๐Ÿšจ A crafty input is all it takes to seize control! The mjs_get_ptr() function in Cesanta mjs v2.20.0 is vulnerable to function pointer hijacking, allowing attackers to execute arbitrary code with ease. ๐Ÿ”ฅ Imagine a restaurant where the chef blindly follows the last order without verifying it โ€” an attacker could slip in a dangerous request and change the entire dish being prepared! ๐Ÿฝ๏ธ If exploited, this vulnerability allows attackers to run any code they desire, potentially compromising the entire system and exposing sensitive data. The consequences could be catastrophic, making this a serious risk that's not to be taken lightly! โšก

Put simply

Imagine a restaurant where the chef blindly follows the last order without verifying it โ€” an attacker could slip in a dangerous request and change the entire dish being prepared! ๐Ÿฝ๏ธ This function pointer hijacking vulnerability occurs in the mjs_get_ptr() function, which does not validate inputs properly. Attackers can exploit this flaw by providing crafted inputs, leading to arbitrary code execution.

What to do

If exploited, this vulnerability allows attackers to run any code they desire, potentially compromising the entire system and exposing sensitive data. The consequences could be catastrophic, making this a serious risk that's not to be taken lightly! โšก To secure your systems, it's crucial to upgrade to a fixed version of Cesanta mjs as soon as it's available. Additionally, review your input validation practices, ensuring that all inputs are thoroughly checked and sanitized. ๐Ÿ›ก๏ธ You've got this! By taking the right steps, you can safeguard your applications and keep those sneaky attackers at bay! ๐Ÿ’ชโœจ

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00987 ยท 62.0th percentile
Published
2023-09-22T00:00Z
EPSS history
Timeline
  • 22 SEP 00:00Z
    Cesanta mjs v2.20.0 was discovered to contain a function pointer hijacking vulnerability via the function mjs_get_ptr()
    cvelistv5