CVE-2020-24753 : Security Advisory and Response
Learn about CVE-2020-24753, a memory corruption vulnerability in Objective Open CBOR Run-time (oocborrt) allowing code execution via crafted CBOR input. Find mitigation steps and affected versions.
A memory corruption vulnerability in Objective Open CBOR Run-time (oocborrt) before 2020-08-12 could allow an attacker to execute code via crafted CBOR input to the cbor2json decoder. This vulnerability arises from an uncaught error during CBOR decoding, leading to potential memory modification and exploitation.
Understanding CVE-2020-24753
This CVE describes a memory corruption vulnerability in oocborrt that could be exploited by an attacker to execute arbitrary code.
What is CVE-2020-24753?
The vulnerability allows attackers to manipulate uninitialized stack values, potentially leading to memory corruption and exploitable heap issues.
The Impact of CVE-2020-24753
The vulnerability could result in a system crash or enable attackers to execute malicious code, posing a significant security risk.
Technical Details of CVE-2020-24753
Objective Open CBOR Run-time (oocborrt) versions before 2020-08-12 are susceptible to this memory corruption vulnerability.
Vulnerability Description
The flaw arises from an error in decoding CBOR Major Type 3 text strings, allowing attackers to control uninitialized stack values.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: All versions before 2020-08-12
Exploitation Mechanism
Attackers can exploit this vulnerability by providing crafted CBOR input to the cbor2json decoder, enabling them to modify memory and potentially cause a crash or heap corruption.
Mitigation and Prevention
To address CVE-2020-24753, follow these mitigation strategies:
Immediate Steps to Take
- Update to the latest version of oocborrt that includes a patch for this vulnerability.
- Implement input validation mechanisms to prevent malicious CBOR input.
Long-Term Security Practices
- Regularly monitor and update software components to address known vulnerabilities.
- Conduct security assessments and code reviews to identify and mitigate potential memory corruption issues.
Patching and Updates
- Apply patches provided by the software vendor promptly to mitigate the vulnerability and enhance system security.