CVE-2016-20047
Last modified
CVE-2016-20047 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. EKG Gadu 1.9~pre+r2855-3+b1 contains a local buffer overflow vulnerability in the username handling that allows local attackers to execute arbitrary code by supplying an oversized username string. Attackers can trigger the overflow in the strlcpy function by passing a crafted buffer exceeding 258 bytes to overwrite the instruction pointer and execute shellcode with user privileges.. EPSS estimates a 0.15% chance of exploitation in the next 30 days.
Description
EKG Gadu 1.9~pre+r2855-3+b1 contains a local buffer overflow vulnerability in the username handling that allows local attackers to execute arbitrary code by supplying an oversized username string. Attackers can trigger the overflow in the strlcpy function by passing a crafted buffer exceeding 258 bytes to overwrite the instruction pointer and execute shellcode with user privileges.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| ekg | EKG Gadu | 1:1.9~pre+r2855-3+b1 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2016-20047?
How severe is CVE-2016-20047?
How do I fix CVE-2016-20047?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2016
- CVE-2016-20041Yasr 0.6.9-5 contains a buffer overflow vulnerability that a…8.6
- CVE-2016-20042TRN 3.6-23 contains a stack buffer overflow vulnerability th…8.6
- CVE-2016-20043NRSS RSS Reader 0.3.9-1 contains a stack buffer overflow vul…7.8
- CVE-2016-20044PInfo 0.6.9-5.1 contains a local buffer overflow vulnerabili…7.8
- CVE-2016-20045HNB Organizer 1.9.18-10 contains a local buffer overflow vul…7.8
- CVE-2016-20046zFTP Client 20061220+dfsg3-4.1 contains a buffer overflow vu…8.6
- CVE-2016-20048iSelect 1.4.0-2+b1 contains a local buffer overflow vulnerab…8.6
- CVE-2016-20049JAD 1.5.8e-1kali1 and prior contains a stack-based buffer ov…9.8
- CVE-2016-2005HPE Data Protector before 7.03_108, 8.x before 8.15, and 9.x…
- CVE-2016-20050NetSchedScan 1.0 contains a buffer overflow vulnerability in…5.5
- CVE-2016-20051Snews CMS 1.7 contains a cross-site request forgery vulnerab…4.3
- CVE-2016-20052Snews CMS 1.7 contains an unrestricted file upload vulnerabi…9.8
Are you affected by CVE-2016-20047?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST