Code execution via RWZ parser integer underflow
Published Dec 11, 2024 · Updated Dec 12, 2024
Integer underflow in XnSoft XnView Classic 2.51.5 allows remote attackers to execute code by supplying a crafted RWZ file. The RWZ parser fails to validate user-controlled values before a memory write, allowing an arithmetic result to underflow and corrupt process memory. Exploitation requires the target to visit a malicious page or open the file, and successful code runs in the current process context.
Summary
What happened
Integer underflow in XnSoft XnView Classic 2.51.5 allows remote attackers to execute code by supplying a crafted RWZ file. The RWZ parser fails to validate user-controlled values before a memory write, allowing an arithmetic result to underflow and corrupt process memory. Exploitation requires the target to visit a malicious page or open the file, and successful code runs in the current process context.
The record
- CVE
- CVE-2024-11950
- Published
- Dec 11, 2024
- Updated
- Dec 12, 2024
- Vendor
- XnSoft
- Product
- XnView Classic
- Classifications
- CWE-191, T1203, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 11, 2024CVE publishedPublication date reported by the CVE source.
- Dec 12, 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=2.51.5
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