Code execution via OBJ parser stack overflow
Published Feb 10, 2021 · Updated Aug 4, 2024
A stack-based buffer overflow in Prusa Research PrusaSlicer 2.2.0 and Master allows attackers to execute code via a crafted OBJ file. Objparser::objparse() reads fixed-size chunks into a stack buffer without preventing cumulative input from exceeding that buffer, allowing a specially crafted file to overwrite stack memory. Exploitation requires an attacker to supply the OBJ file and a user or process to open it; successful exploitation can execute code with the slicer's privileges.
Summary
What happened
A stack-based buffer overflow in Prusa Research PrusaSlicer 2.2.0 and Master allows attackers to execute code via a crafted OBJ file. Objparser::objparse() reads fixed-size chunks into a stack buffer without preventing cumulative input from exceeding that buffer, allowing a specially crafted file to overwrite stack memory. Exploitation requires an attacker to supply the OBJ file and a user or process to open it; successful exploitation can execute code with the slicer's privileges.
The record
- CVE
- CVE-2020-28596
- Published
- Feb 10, 2021
- Updated
- Aug 4, 2024
- Vendor
- Prusa Research
- Product
- PrusaSlicer
- Classifications
- CWE-121, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 10, 2021CVE publishedPublication date reported by the CVE source.
- Aug 4, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=Prusa Research PrusaSlicer 2.2.0 , Prusa Research PrusaSlicer Master (commit 4b040b856)
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo