Local code execution via unchecked key argument
Published Mar 28, 2026 · Updated Mar 28, 2026
Stack-based buffer overflow in iSelect 1.4.0-2+b1 allows local users to execute arbitrary code through an oversized -k/--key argument. The option handler copies the attacker-controlled argument with strcpy into a 1024-byte stack buffer without enforcing the destination length. A user able to invoke the Linux command can overwrite the return address and execute code with that user's privileges; no privilege gain is reported.
Summary
What happened
Stack-based buffer overflow in iSelect 1.4.0-2+b1 allows local users to execute arbitrary code through an oversized -k/--key argument. The option handler copies the attacker-controlled argument with strcpy into a 1024-byte stack buffer without enforcing the destination length. A user able to invoke the Linux command can overwrite the return address and execute code with that user's privileges; no privilege gain is reported.
The record
- CVE
- CVE-2016-20048
- Published
- Mar 28, 2026
- Updated
- Mar 28, 2026
- Vendor
- OSSP
- Product
- iSelect
- Classifications
- CWE-22, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 28, 2026CVE publishedPublication date reported by the CVE source.
- Mar 28, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.4.0-2+b1
What conditions does exploitation require?
What is affected?
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
- iSelect v1.4 - Local Buffer Overflowproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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